Specific tariff entry prevails for cylinder head assemblies, while revised classification applies only prospectively from filing date.

Cylinder head assembly for an internal combustion engine was held classifiable under Chapter Heading 84.09 because the Explanatory Notes expressly cover cylinder heads as parts of internal combustion piston engines, and the specific heading prevails over the broader locomotive-parts entry under Chapter Heading 86.07. The revised classification list filed on 10-11-1997 operated only prospectively, so the earlier period remained governed by the department's existing classification. Accordingly, the assessee obtained relief on the tariff classification issue, but only for the period after the revised filing date, while the pre-10-11-1997 period continued under Chapter Heading 86.07.

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Issues: (i) Whether cylinder head assembly for an internal combustion engine was classifiable under Chapter Heading 84.09 or Chapter Heading 86.07 of the Central Excise Tariff Act, 1985. (ii) Whether the revised classification applied only from 10-11-1997, leaving the earlier period governed by the old classification.

Issue (i): Whether cylinder head assembly for an internal combustion engine was classifiable under Chapter Heading 84.09 or Chapter Heading 86.07 of the Central Excise Tariff Act, 1985.

Analysis: The Explanatory Notes to Chapter Heading 84.09 specifically include cylinder heads as parts of internal combustion piston engines. In that situation, the more specific tariff entry for cylinder heads governs the classification, and the broader heading relating to parts of locomotives cannot be applied to the goods in question.

Conclusion: The cylinder head assembly was classifiable under Chapter Heading 84.09.

Issue (ii): Whether the revised classification applied only from 10-11-1997, leaving the earlier period governed by the old classification.

Analysis: The revised classification list was filed on 10-11-1997. The change in classification could therefore operate only from that date, and the period prior to that filing continued under the earlier classification adopted by the department.

Conclusion: For the period from August 1997 to 9-11-1997, duty remained payable under Chapter Heading 86.07.

Final Conclusion: The assessee succeeded on the tariff classification dispute, but the benefit was confined to the period after the revised classification list was filed, with the earlier period left undisturbed.

Ratio Decidendi: A specific tariff entry covering the precise goods prevails over a general residual entry, and a revised classification operates prospectively from the date it is filed.

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