Fan Drive Assembly Classifiable as Fluid Coupling Due to Functional Characteristics: AAR Tamilnadu

In re BorgWarner Cooling Systems (India) Private Limited (GST AAR Tamilnadu)

In the automotive and engineering industry, the product in question is NOT referred to or understood as a conventional dry-plate or friction-based clutch. Instead, it is consistently identified as a due to its operational characteristics. This trade terminology distinguishes it from traditional clutches which operate through friction.

The Tamil Nadu Authority for Advance Ruling (AAR) in In re BorgWarner Cooling Systems (India) Private Limited examined the classification and applicable GST rate for “Fan Drive Assembly” used in engine cooling systems of motor vehicles. The applicant manufactures and supplies these assemblies for use in vehicles such as trucks, SUVs, and tractors. The product operates using a viscous fluid coupling mechanism, where silicone fluid regulates the engagement and disengagement of the radiator fan based on engine temperature, thereby improving fuel efficiency and maintaining optimal engine performance. Unlike traditional clutches, it does not rely on friction plates but functions through fluid dynamics.

The applicant had been classifying the product under HSN 8708 as parts of motor vehicles, attracting higher GST, but sought clarification on whether it should instead be classified under HSN 8483.60 as a “fluid coupling,” which would attract GST at 18%. The AAR analysed the product’s design, function, and operation, noting that it is a self-contained mechanical device that controls torque transmission through viscous fluid and not friction-based mechanisms. The Authority observed that conventional clutches under HSN 8708 involve mechanical engagement and disengagement through friction, whereas the applicant’s product operates on fluid coupling principles.

Referring to the Customs Tariff Act, 1975, the AAR identified HSN 8483.60 as covering clutches and shaft couplings, including fluid couplings. It held that the Fan Drive Assembly aligns specifically with “fluid coupling” under HSN 8483.60.20 due to its operational characteristics. Applying the principle that specific classification prevails over general classification, the Authority ruled that HSN 8483 is more appropriate than HSN 8708. It further relied on Note 2 to Section XVII, which excludes goods falling under Heading 8483 from classification as motor vehicle parts under Chapter 87, even if used in vehicles. Additionally, Note 2(a) to Section XVI mandates classification under a specific heading where the product is clearly described therein, irrespective of its end-use.

The AAR concluded that classification under HSN 8708 is not legally sustainable, as the product is a distinct mechanical device with independent functional identity. Instead, it must be classified under HSN 8483.60 as a fluid coupling. Accordingly, the product falls under Serial No. 369A of Schedule III of Notification No. 1/2017-Central Tax (Rate), attracting GST at 18% (9% CGST and 9% SGST). The ruling also clarified that subsequent amendments continue to maintain the same GST rate.

With respect to individual parts and components of the Fan Drive Assembly, the AAR held that such parts, when supplied separately, are classifiable under HSN 8483.60.90 under the “other” category, as there is no specific entry for parts of fluid couplings.

In conclusion, the AAR ruled that (i) the Fan Drive Assembly is classifiable as a fluid coupling under HSN 8483.60, (ii) it attracts GST at 18%, and (iii) its individual components fall under HSN 8483.60.90. The ruling emphasises that classification must be based on functional characteristics and specific tariff entries rather than end-use in motor vehicles.

FULL TEXT OF THE ORDER OF AUTHORITY FOR ADVANCE RULING, TAMILNADU

M/s BorgWarner Cooling Systems (India) Private Limited, having place of business at E-14, SIPCOT Industrial Park, Mambakkam-Sriperumbudur, Kancheepuram, Tamil Nadu- 602105 (hereinafter called as the “Applicant”) has registered with GSTIN 33AABCB5837E2ZZ under the Goods and Services Tax Act. They have filed this application for advance ruling under Section 97 of the CGST Act, 2017, and corresponding provisions under the Section 97 of TNGST Act 2017. The Applicant has made a payment of application fees of Rs.10,000/- under sub rule (1) of Rule 104 of CGST Rules, 2017 and TNGST Rules, 2017.

2. Statement of relevant facts having a bearing on the questions raised.

2.1 BorgWarner Cooling Systems (India) Pvt Ltd., is engaged in the supply of Fan Drive Assemblies, which are used in the Engine Cooling Systems of motor vehicles, primarily medium-to-heavy-duty vehicles such as trucks, SUVs, and Tractors for Agri segment. These assemblies are technologically designed to function as clutch mechanism and are placed in between the Engine and the HVAC system (Heating, Ventilation, and Air conditioning). The Fan Drive Assembly operates on the viscous fluid coupling principle, which allows for variable engagement of the fan depending on engine operating conditions. As the engine temperature rises, a heat sensitive Bi-metallic coil contract, which in turn opens valve ports within the clutch, allowing silicone fluid stored in a reservoir to enter the working chamber. This causes the clutch to engage the fan, increasing its speed to pull more ambient air from the surrounding which in turn pass through the radiator and lower the Engine Coolant temperature. When the engine cools down, allowing Fan clutch to disengage, where the fan rotate at ideal speed and reducing Fuel consumption. This thermostatically controlled Fan Drive Assembly’s engagement and disengagement cycle significantly improves fuel efficiency, reduces engine wear, and supports in maintaining optimum engine temperature. In the enhanced versions of the fan drive, an electronic actuator replaces the bi-metallic coil. The actuator offers precise controls and flexibility to program when the viscous fluid should be allowed to enter the working chamber and engagement, and disengagement function enabled. The product’s design and function are consistent with the characteristics of Viscous Clutches as recognized in engineering standards.

2.2 The Fan Drive Assembly is not a general-purpose mechanical part; rather, it is a functionally identifiable Clutch specifically designed to control torque transfer between the engine and the radiator fan. Given its mechanical behaviour and operational design, it performs the essential function of a clutch as described under Heading 8483.60 of the Customs Tariff Act.

2.3 Relevant Entry from the First Schedule to the Customs Tariff Act, 1975 — HSN 8483 — Transmission shafts (including cam shafts and cranks shafts) and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints)

2.4 At present, the goods (Fan Drive Assembly) are supplied by the Applicant under HSN 8708 as parts and accessories of the motor vehicles of headings 8701 to 8705.

2.5 The applicant has filed the present application for advance ruling seeking clarification on the following questions:

1. Whether the Fan Drive Assembly supplied by BorgWarner Cooling systems (India) Private Limited (The Applicant) is classifiable under Heading 8483.60 of the Customs Tariff Act, 1975 as a Clutch and Shaft Coupling, for the purposes of classification under the GST Law?

2. Whether the Fan Drive Assembly classifiable under Heading 8483.60, is covered under Si. No. 369A of Schedule 111 9% of Notification No. 1/2017 – Central Tax (Rate) dated 28.06.2017 (as amended)?

3. Whether the individual parts and components of the Fan Drive Assembly, when procured or purchased separately by the applicant, are classifiable under Heading 8483.60 as parts of clutches?

3. Applicant’s interpretation of law:

CLASSIFICATION OF FAN DRIVE ASSEMBLY

Interpretation based on Trade Parlance Theory

3.1 As per the Customs Manual, 2023, Chapter 4 — classification of goods, paragraphs 2.7 and 2.8 emphasize that in the absence of a statutory definition, goods are to be classified based on how they are understood in common or trade parlance, especially when the terms used in the tariff are of general usage. The manual clearly provides that where the tariffs does not require strict technical interpretation. “Trade meaning” takes precedence over dictionary or technical definitions, as it most accurately reflects the functional and commercial understanding of the goods.

3.2 In the automotive and engineering industry, the product in question is NOT referred to or understood as a conventional dry-plate or friction-based clutch. Instead, it is consistently identified as a “viscous clutch” or “fluid coupling clutch” due to its operational characteristics. This trade terminology distinguishes it from traditional clutches which operate through friction.

3.3 In light of the Customs Manual’s direction to rely on trade usage, and the consistent identification of the product as a clutch with fluid coupling within automotive trade and service literature, the applicant submits that the correct classification, as understood in trade, is under Heading 8483.60, and not under Heading 8708.93.00, which refers to conventional motor vehicle clutches.

Interpretation based on Trade Parlance Theory

3.4 The Fan Drive Assembly supplied by the applicant is best understood through its design, function, and operation as detailed in the manufacturer’s Product sheet for visctronics Fan Drive Technology developed by BorgWarner. The document provides authoritative evidence that the product is not merely a clutch, but a highly specialized electronically controlled fluid coupling system, classifiable under HSN Code 8483.60.20.

Technology 86 Operation Principle

3.5 The product sheet describes the Visctronics Fan Drive as an electronically controlled viscous fan drive, which:

a. Utilizes proven viscous technology

b. Incorporates high-speed fluid reservoirs, and

c. Achieves fan speed control through precise fluid distribution, regulated by the engine ECU using PWM (pulse width modulation) signals

This operation is a textbook example of a fluid coupling, where viscous fluid within an enclosed chamber enables smooth, variable torque transmission between the engine shaft and the radiator fan, depending on thermal and electronic inputs. Unlike friction clutches, there are no contact plates – the drive depends entirely on the modification of fluid flow and viscosity.

3.6 Key Technical Features Indicating Fluid Coupling

From the product sheet:

• High-speed reservoir and patented fluid distribution is a core design element,
• Maintenance-free, self-contained unit – with no mechanical clutch plate to wear out,
• Improved fuel economy through low disengaged fan speed and controlled engagement,
• Low parasitic losses and less fan drag, clearly signifying fluid coupling behaviour.

These are not features of a traditional mechanical clutch; they are consistent with and exclusive to hydrodynamic torque transmission systems, which are technically tariff-wise fluid couplings.

3.7 Functional Confirmation from Troubleshooting Guide

The Visctronic Troubleshooting Guide, which is the standard reference used in service and diagnostics, further confirms this interpretation:

• Frequent references to “viscous fluid leakage”, “clutch engagement”, and “disengagement”,
• Diagnostic steps based on fluid-driven torque transfer rather than friction testing,
• Solenoid-based value actuation for modulating the flow of silicone fluid, integral to performance.

The guide confirms that the presence and control of viscous fluid is essential for the unit’s functioning. It also reveals that system failures are tied to fluid management, not mechanical friction wear- again aligning with fluid coupling principles.

3.8 In summary, Applicant’s interpretation is that

a. The Fan Drive Assembly functions not as a standard clutch, but as a fluid coupling device using viscous fluid for power modulation.

b. The assembly does not operate on direct mechanical friction but on fluid dynamics.

c. It falls squarely within the scope of HSN Code 8483.60.20 under the First Schedule to the Customs Tariff Act, 1975, which specifically covers fluid couplings.

d. It is technically and legally distinct from conventional vehicle clutches classified under HS Code 8708.93.00.

3.9 Interpretation based on principle that specific description prevails over general Description and specific exclusion of 8483 from Chapter 87

Legal principle – Generalia Specialibus Non Derogant

It is a well-established rule of interpretation that “Specific description overrides general description”, captured in the Latin maxim Generalia specialibus non derogant. Under this principle, when two competing classifications exist – one general and one specific – the specific must prevail. This doctrine has been consistently applied by courts in the context of tariff and tax classification. In the present case, the applicant’s product- the Fan Drive Assembly – is specifically and functionally a “fluid coupling”, which is explicitly provided for under Heading 8483.60.20 of the First Schedule to the Customs Tariff Act, 1975. This heading reads:

HSN 8483 — Transmission shafts (including cam shafts and cranks shafts) and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints)

This is a clear and unambiguous technical description that precisely fits the product. As demonstrated through the manufacturer’s Product Sheet for Visctronic Fan Drive Technology and the accompanying Troubleshooting Guide, the Fan Drive Assembly:

• Operates via viscous fluid (Silicone oil),
• Engages/Disengages based on ECU commands,
• Uses electronically actuated fluid flow instead of friction plates,
• Is self-contained and functions as a torque-modulating coupling mechanism.

The operation and internal architecture of the assembly align squarely with the classification under HS Code 8483.60.20 — Fluid coupling, a specific description under the First Schedule to the Customs Tariff Act, 1975.

3.10 Legal Exclusion from Chapter 87 by Note 2 to Section XVII

The classification of this product under Heading 8708- “parts and accessories of motor vehicles”- is legally untenable in light of Note 2 to Section XVII, which reads

Note 2 to Section XVII

The expressions ‘parts’ and ‘parts and accessories’ do not apply to the following articles, whether or not they are identifiable as for the goods of this Section;

(e) Machines and apparatus of headings 8401 to 8479, or parts thereof, other than the radiators for the articles of this Section, articles of heading 8481 or 8482 or, provided they constitute integral parts of engines and motors, articles of heading 8483.

This clause makes clear that articles falling under Heading 8483-when they are integral to engines or motors — are expressly excluded from being classified as parts and accessories under Section XVII, which includes Chapter 87.

The Fan Drive Assembly, being a Self-contained, functional mechanical unit that regulates torque transmission using fluid dynamics, and being integrated with the engine’s thermal management system, satisfies the exclusionary condition. As such, it cannot be classified under Heading 8708, regardless of its end-use in a motor vehicle.

3.11 Interpretation Based on Note 2 to Section XVI – Machinery and Mechanical Appliances

Section XVI of the First Schedule to the Customs Tariff Act, 1975 covers Machinery, mechanical appliances, electrical equipment, and their parts, including all heading under Chapters 84 and 85. Note 2 to Section XVI reads as follows:

Subject to Note 1 to this Section, Note 1 to Chapter 84 and to Note 1 to Chapter 85, parts of machines (not being parts of the articles of heading 8484, 8544, 8545, 8546 or 8547) are to be classified according to the following rules:

(a) Parts which are goods included in any of the headings of Chapter 84 or 85 (other than headings 8409, 8431, 8448, 8466, 8473, 8485, 8503, 8522, 8529,8538 and 8548) are in all cases to be classified in their respective headings.

This Note creates a mandatory rule of classification that applies when:

a. The article in question is itself described by a specific heading in. Chapter 84 or 85, and

b. It is not one of the exceptions listed in the parenthetical clause.

In such cases, classification must be made under the specific heading, irrespective of its use as a part or component in a broader system or machine.

The Fan Drive Assembly in question:

• Is a self-contained mechanical device that regulates torque transmission via viscous fluid,
• Has a clear and specific functional description under Heading 8483.60.20 – Fluid Coupling,
• Is neither a loose part nor a component that lacks independent mechanical identity,
• And is not listed among the exceptions (i.e., not covered under Headings 8409, 8431, etc.).

Thus, per Note 2(a) to Section XVI, even if the Fan Drive Assembly is ultimately fitted into a motor vehicle, it must be classified under Heading 8483, and not as a part or accessory under any other heading – whether in Chapter 87 or elsewhere. This reinforces the rule that functional completeness and tariff-specific identification override end-use or integration into a composite machine.

3.12 Harmonized Treatment with Note 2 to Section XVII

This provision complements Note 2(e) to Section XVII, which excludes from Chapter 87 all articles that fall under Chapter 84- particularly Heading 8483-when such articles are integral parts of engines or motors.

The harmonized reading of both notes results in a two-fold conclusion:

a. Note 2(a) to Section XVI obliges classification under Heading 8433 when a product matches that heading’s description,

b. Note 2 to Section XVII prohibits classification under Chapter 87 for the same article, even if its ultimate use is in a vehicle.

Together, they remove any ambiguity: a product such as the Fan Drive Assembly, which is functionally a fluid coupling, must be classified exclusively under Heading 8483.60.20.

3.13 Interpretation Based on AAR in Re: M/ s El-Chico Clutch Pvt. Ltd.-Applicability to Present Case

In the ruling delivered by the Authority for Advance Ruling, Haryana, in the case of M/s El-Chico Clutch Pvt. Ltd. [2019 (10) TMI 1392], the applicant had sought classification of various automobile parts, including:

a. Starter Ring Gear Flywheel Assembly,

b. Starter Ring Gear, and

c. Universal Joint Cross (U.J. Cross)

The issue before the AAR was whether these items, though ultimately used in motor vehicles-should be classified under HSN 8708 (parts and accessories of motor vehicles) or under HSN 8483 (Transmission and related mechanical components, including flywheels and clutches).

The AAR ruling reaffirmed that specific descriptions under Heading 8483 prevail over general classification under Heading 8708, especially where the product falls squarely within the technical scope of Heading 8483. The AAR explicitly relied on Note 2 to Section XVII, which excludes articles of Heading 8483 from classification under Chapter 87- even if they are identifiable as motor vehicle parts. This statutory exclusion is decisive. The ruling referenced Explanatory Note (F) to Heading 8708, which confirms that certain internal engine components, such as Flywheels, are to be classified under Heading 8483, not under 8708. Based on the above, the Starter Ring Gear Flywheel Assembly was held to be correctly classifiable under HS Code 8483, not 8708, and taxed accordingly at the lower rate prescribed for Schedule III items (18%).

The facts and legal issues in the present case involving the Fan Drive Assembly (Visctronics) are squarely aligned with the above ruling, for the following reasons:

a. Just as the flywheel assembly had a distinct mechanical identity falling within Heading 8483, the Fan Drive Assembly is technically and functionally a “fluid coupling”, a term specifically mentioned in Tariff Entry 8483.60.20. It is not simply a general clutch or engine accessory, it is a mechanically self-contained torque modulation device, regulated via viscous fluid.

b. The Fan Drive Assembly, like the flywheel assembly, is integral to engine function and is excluded from Heading 8708 by Note 2(e) to Section XVII, which removes from 8708 all articles of Heading 8483, provided they from part of the engine or motor assembly — which is clearly the case here.

c. The AAR in El-Chico clutch emphasized that use in a motor vehicle does not control classification when a product has an independent identity in a specific tariff heading. That principle applies with equal, if not greater, force to the present case.

d. Like the flywheel, fluid couplings are listed in the Explanatory Notes to Heading 8483.60. This international interpretive support aligns fully with the functional specifications of the Visctronics Fan Drive, as confirmed in the product sheet and troubleshooting documentation.

4. The applicant is under the administrative control of State. The concerned authorities of the Centre and State were addressed to report if there are any pending proceedings against the applicant on the issues raised by them in the ARA application. No remarks have been received from the State and Central jurisdictional authorities. Hence, it is construed that there are no pending proceedings against the applicant on the issues raised by them in the ARA application.

5. Personal Hearing

5.1 The applicant was given an opportunity to be heard in person on 20.01.2026. Mr. P. Paul Thangam, FCA, Chartered Accountant and Mr. J. Muthukumar, Deputy Manager (Indirect Taxes) of the company, appeared for the personal hearing as the authorized representatives (AR) of M/s. BorgWarner Cooling Systems India Pvt. Ltd. The AR reiterated the submissions made in their application for advance ruling.

5.2 The AR informed that they are engaged in supply of fan drive assemblies used in the engine cooling systems of Internal Combustion Engine. The AR informed that they supply these parts directly to OEMs of commercial vehicles, tractors, etc. The AR presented a video on working of the part in question manufactured by the applicant for a better understanding. The AR informed that the fan drive assembly is attached with the engine shaft. It will sense the temperature from the radiator and the thermostat will be activated and the fan speed is modified by a viscous fluid present in the assembly. This in turn maintains the engine temperature by helping in rapid cooling of the radiator coolant. The Members asked whether the fan drive assembly has any electronic component. The AR replied that this particular product does not have any electronic part. The Members asked whether the part in question is essential part of the engine, to which the AR replied that it is not compulsory but all OEMs of the commercial vehicles, tractors prefer it as they require rapid cooling of the engine.

5.3 The Members enquired as to what is the present rate of tax adopted on the supply of the part in question. The AR replied that they are adopting 28% rate of tax by classifying it under Heading 8708.93. The AR further stated that they have filed the present application for advance ruling for proper classification of the fan drive assembly, as some of the OEMs approached the Applicant with a request to explore the option of classifying the part under Heading 8483.60 and collecting tax at the rate of 18%, as the basic functionality of the part is that of a typical clutch i.e. engaging and disengaging the shaft of the fan so as to control its speed.

6. Discussions and Findings:

6.1 We have carefully examined the submissions made by the applicant in their advance ruling application and the submissions made during the personal hearing. We have also considered the issue involved, the relevant facts and the applicant’s submission / interpretation of law in respect of question on which the advance ruling is sought.

6.2 We find that the query is liable for admission as it gets covered under Section 97 (2) (a) and (b) of CGST/TNGST Act, 2017 under a) classification of any goods or services or both; and (b) applicability of a notification issued under the provisions of this Act;

6.3 We understand that the applicant is engaged in the supply of Fan Drive Assemblies, which are used in the Engine Cooling Systems of motor vehicles, primarily medium-to-heavy-duty vehicles such as trucks, SUVs, and Tractors for Agri segment. These assemblies are technologically designed to function as clutch mechanism and are placed in between the Engine and the HVAC system (Heating, Ventilation, and Air conditioning). The Fan Drive Assembly operates on the viscous fluid coupling principle, which allows for variable engagement of the fan depending on engine operating conditions. As the engine temperature rises, a heat sensitive Bi­metallic coil contract, which in turn opens valve ports within the clutch, allowing silicone fluid stored in a reservoir to enter the working chamber. This causes the clutch to engage the fan, increasing its speed to pull more ambient air from the surrounding which in turn pass through the radiator and lower the Engine Coolant temperature. When the engine cools down, allowing Fan clutch to disengage, where the fan rotate at ideal speed and reducing Fuel consumption. This thermostatically controlled Fan Drive Assembly’s engagement and disengagement cycle significantly improves fuel efficiency, reduces engine wear, and supports in maintaining optimum engine temperature. In the enhanced versions of the fan drive, an electronic actuator replaces the bi-metallic coil. The actuator offers precise controls and flexibility to program when the viscous fluid should be allowed to enter the working chamber and engagement, and disengagement function enabled.

6.4 We understand from the details given by the Visctronic Fan Drive as an electronically controlled viscous fan drive, which utilizes proven viscous technology; incorporates high speed fluid reservoirs and achieves Fan Speed control through precise fluid distribution regulated by the Engine ECU using pulse width modulation signals). This operation is example of a fluid coupling, where viscous fluid within an enclosed chamber enables smooth, variable torque transmission between the engine shaft and the radiator fan, depending on thermal and electronic inputs. Unlike friction clutches, there are no contact plates — the drive depends entirely on the modification of fluid flow and viscosity. It is seen that the Fan Drive has a high-speed reservoir and patented fluid distribution as a core design element; Maintenance-free, self-contained unit — with no mechanical clutch plate to wear out; Improved fuel economy through low disengaged fan speed and controlled engagement; Low parasitic losses and less fan drag, clearly signifying fluid coupling behaviour. These are not features of a traditional mechanical clutch; they are consistent with and exclusive to hydrodynamic torque transmission systems, which are technically tariff-wise fluid couplings.

6.5 From the above, we get to understand that a Fan Drive Assembly in a motor vehicle is used as part of the engine cooling system, primarily to control the rotational speed of the radiator cooling fan based on engine temperature requirements. It optimizes heat exchange, reduces noise, and improves fuel efficiency, particularly in commercial vehicles and heavy-duty trucks. The Fan Drive Assembly functions not as a standard clutch, but as a fluid coupling device using viscous fluid for power modulation. The assembly does not operate on direct mechanical friction but on fluid dynamics.

6.6 Let us go in to the classification of the above said product under Customs Tariff Act, 1975 for GST purposes.

We get to understand that a clutch in heavy vehicles is a heavy-duty mechanical device situated between the engine and the gearbox that engages and disengages power transmission. It allows the driver to interrupt power flow to the wheels for smooth gear shifting and stopping without turning off the engine. In heavy-duty trucks, these are often robust, single or multi-plate friction clutches designed to handle high torque loads.

Key aspects of heavy vehicle clutches include:

It connects the engine’s rotating crankshaft to the transmission input shaft, allowing the driver to change gears; Frequently use single-plate, multi-plate, or hydraulic clutches designed to withstand high-temperature, high-torque environments; When engaged, it drives the truck; when disengaged (pedal pressed), it stops power flow to the drivetrain; Essential for managing immense torque during hauling, enabling stop-and-go driving, and protecting the transmission from damage.

The clutches with the above features necessarily fit under HSN 8708 93 as parts and accessories of Motor Vehicles. The applicant has been classifying their product Fan Drive Assembly as Clutches under the HSN 8708 93 00 falling under Parts and Accessories of the motor vehicles.

6.7 However, based on the product description for Fan Drive Assembly of the Applicant as given in Para 6.4 86 6.5 above, we refer to the First Schedule to the Customs Tariff Act, 1975 wherein the relevant Entry

HSN 8483 — Transmission shafts (including cam shafts and cranks shafts) and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints)

The Fan Drive Assembly operates via viscous fluid (Silicone oil); Engages/Disengages based on ECU commands; uses electronically actuated fluid flow instead of friction plates; is self-contained and functions as a torque-modulating coupling mechanism. The operation and internal architecture of the assembly align squarely with the classification under HSN Code 8483.60.20 – Fluid coupling, a specific description under the First Schedule to the Customs Tariff Act, 1975. It appears that the Fan Drive Assembly which is a fluid coupling device used as part of the engine cooling system would fall within HSN code 8483 60 20 under Clutches and Shafts.

6.8 Also, it is a well-established rule of interpretation that “Specific description overrides general description”. Under this principle, when two competing classifications exist – one general and one specific – the specific must prevail. This doctrine has been consistently applied by courts in the context of tariff and tax classification. In the present case, the applicant’s product- the Fan Drive Assembly – is specifically and functionally a “fluid coupling”, which is explicitly provided for under Heading 8483.60.20 of the First Schedule to the Customs Tariff Act, 1975 and fits the product. It is technically and legally distinct from conventional vehicle clutches classified under HSN 8708.93.00.

6.9 Further, the classification of this product under Heading 8708- “parts and accessories of motor vehicles”- is legally untenable in light of Note 2 to Section XVII, which reads

“The expressions ‘parts’ and ‘parts and accessories’ do not apply to the following articles, whether or not they are identifiable as for the goods of this Section:

(e) Machines and apparatus of headings 8401 to 8479, or parts thereof other than the radiators for the articles of this Section, articles of heading 8481 or 8482 or, provided they constitute integral parts of engines and motors, articles of heading 8483″.

This clause makes clear that articles falling under Heading 8483-when they are integral to engines or motors – are expressly excluded from being classified as parts and accessories under Section XVII, which includes Chapter 87. The Fan Drive Assembly, being a self-contained, functional mechanical unit that regulates torque transmission using fluid dynamics, and being integrated with the engine’s thermal management system, satisfies the exclusionary condition. As such, it cannot be classified under Heading 8708, regardless of its end-use in a. motor vehicle.

6.10 Also, Section XVI of the First Schedule to the Customs Tariff Act, 1975 covers Machinery, mechanical appliances, electrical equipment, and their parts, including all heading under Chapters 84 and 85. Note 2 to Section XVI reads as follows:

“Subject to Note 1 to this Section, Note 1 to Chapter 84 and to Note 1 to Chapter 85, parts of machines (not being parts of the articles of heading 8484, 8544, 8545, 8546 or 8547) are to be classified according to the following rules:

(a) Parts which are goods included in any of the headings of Chapter 84 or 85 (other than headings 8409, 8431, 8448, 8466, 8473, 8485, 8503, 8522, 8529,8538 and 8548) are in all cases to be classified in their respective headings.”.

This Note creates a mandatory rule of classification that applies when:

a. The article in question is itself described by a specific heading in Chapter 84 or 85, and

b. It is not one of the exceptions listed in the parenthetical clause.

6.11 In view of the above, we feel that the Fan Drive Assembly as described by the Applicant would rightly be classified under the HSN 8483.60 of the First Schedule to the Customs Tariff Act, 1975 for the purpose of classification under GST Law.

6.12 Now, we look in to the rate of tax of Fan Drive Assembly to answer the applicant’s second query. Notification No.1/2017 -Central Tax (Rate) dated 28.06.2017 was amended by Notification no.24/2018-Central Tax (Rate) dated 31.12.2018 wherein S.No.369A was substituted and the rate of tax prescribed under Schedule III at 9% as follows:

(d) in Schedule HI – 9%, –

(i)……………….

ii) ………………..

(iii) against S. No. 369A, for the entry in column (3), the entry ‘Transmission shafts (including cam shafts and crank shafts) and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints)” shall be substituted;

We find that the Fan Drive Assembly classifiable under HSN 8483.60 of the First Schedule to the Customs Tariff Act, 1975 would fall under SI. No.369A of Schedule III of Notification No.1/2017 -Central Tax (Rate) dated 28.06.2017 (as amended) and leviable to GST @ 18% (i.e. CGST at 9% & SGST at 9%).

6.13 It may be noted that with effect from 22.09.2025, HSN 8483.60 of the First Schedule to the Customs Tariff Act, 1975 would fall under Sl. No.468 of Schedule II of Notification No.9/2025 -Central Tax (Rate) dated 17.09.2025 and leviable to GST @ 18% (i.e. CGST at 9% 86 SGST at 9%) as under:

Schedule — II – 9% (CGST)

6.14 With regard to the third query that individual parts and components of the Fan Drive Assembly when procured or purchased separately by the applicant, are classifiable under Heading 8483.60 as parts of clutches has been examined.

We feel that the parts and components of the Fan Drive Assembly which are fluid couplings would fall under HSN 8483 60 90—- Other category as there is no specific heading for parts of Fluid Coupling.

7. In view of the above, we rule as under:

RULING

1. The Fan Drive Assembly supplied by BorgWarner Cooling systems (India) Private Limited is classifiable as Fluid Coupling falling under Clutch and Shaft Coupling under HSN 8483.60 of the Customs Tariff Act, 1975.

2. Fan Drive Assembly supplied by the Applicant classifiable under Heading 8483.60, is covered under 81. No.369A of Schedule III- 9% of Notification No. 1/2017 -Central Tax (Rate) dated 28.06.2017 (as amended).

3. The individual parts and components of the Fan Drive Assembly, when procured or purchased separately by the applicant, are classifiable under HSN 8483.60.90 under Other category.