Motor vehicle spare parts classification fails where a fuel injection pump is in substance a diesel engine component.

A taxing entry covering spare parts of motor vehicles is to be construed strictly where it attracts a higher rate of tax. Fuel injection pumps were treated as integral and necessary parts of a diesel engine, with no independent utility as motor vehicle parts merely because diesel engines may later be fitted in vehicles. Applying common parlance and functional understanding, the component was held to remain a part of the engine, not a spare part of the motor vehicle. On that basis, fuel injection pumps and their spare parts were excluded from the motor-vehicle spare parts entry.

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Issues: Whether fuel injection pumps and their spare parts are covered by the entry relating to spare parts of motor vehicles under Item 1 of the First Schedule to the Bengal Finance (Sales Tax) Act, 1941 as extended to Delhi, and whether they can be treated as motor vehicle parts merely because they are fitted in diesel engines later installed in motor vehicles.

Analysis: The relevant entry taxed spare parts of motor vehicles and had to be construed strictly because it imposed a higher rate of tax. The fuel injection pump was found to be an integral and necessary part of a diesel engine, with no independent utility in a motor vehicle unless attached to the engine. The fact that diesel engines may be fitted in motor vehicles did not convert a part of the engine into a spare part of the motor vehicle. Applying the common parlance and functional understanding of the goods, the fuel pump was regarded as a part of the diesel engine, not a spare part of the motor vehicle.

Conclusion: The question was answered in the negative. Fuel injection pumps and their spare parts were not taxable as spare parts of motor vehicles under the relevant entry, and the assessee succeeded.

Final Conclusion: The reference was answered in favour of the assessee, and the revenue's classification of the goods as motor-vehicle spare parts was rejected.

Ratio Decidendi: Where a taxing entry refers specifically to spare parts of motor vehicles, a component that is in substance and function a part of a diesel engine cannot be brought within that entry merely because the engine may ultimately be used in a motor vehicle.

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