Separate machine components must be classified by their own identity and function, with exemption eligibility remanded for fresh review.

Separate and functionally distinct machine components do not become parts of a crankshaft merely because they are mechanically connected or housed together; the connecting rod and crankcase were therefore held not classifiable under Heading 84.83 and the classification under Heading 84.09 was upheld. Because the duty position depended on that revised classification, the exemption claim under Notification No. 1/93 could not be finally determined on the record and was remanded for fresh consideration by the adjudicating authority after hearing the assessee.

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Issues: (i) Whether the connecting rod and crankcase were classifiable under Heading 84.83 as parts of a crankshaft or under Heading 84.09 as parts suitable for use solely or principally with engines; (ii) Whether, after the classification dispute was resolved, the matter required reconsideration of the assessee's claim to exemption under Notification No. 1/93.

Issue (i): Whether the connecting rod and crankcase were classifiable under Heading 84.83 as parts of a crankshaft or under Heading 84.09 as parts suitable for use solely or principally with engines.

Analysis: The connecting rod and crankcase were found to be separate and identifiable components, with distinct functions from the crankshaft. Merely because the crankshaft was composed of two pieces and the connecting rod was mounted on the pin connecting those pieces did not make the connecting rod part of the crankshaft. A housing does not become part of the goods it houses, and the crankcase was also treated as distinct from the crankshaft. The earlier appellate view was held to rest on assumption rather than reasoning.

Conclusion: The goods were not classifiable as parts of a crankshaft under Heading 84.83. The classification under Heading 84.09 was upheld, in favour of the Revenue.

Issue (ii): Whether, after the classification dispute was resolved, the matter required reconsideration of the assessee's claim to exemption under Notification No. 1/93.

Analysis: Since the question of duty depended on the revised classification, the exemption claim could not be finally decided without examining whether the assessee was entitled to the notification benefit. The matter therefore required fresh consideration by the adjudicating authority after hearing the assessee.

Conclusion: The duty issue was remanded for reconsideration of exemption eligibility.

Final Conclusion: The classification dispute was decided against the assessee, while the consequential duty and exemption question was sent back for fresh determination.

Ratio Decidendi: Separate and functionally distinct machine components do not become part of one another merely because they are mechanically connected or housed together; classification must follow the goods' own identity and function.

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