Use-based tariff classification governs motor vehicle compressor parts, while long-accepted classification cannot by itself trigger extended penalty proceedings.

Motor vehicle air-conditioning gas compressors were treated as parts and accessories of motor vehicles under Heading 8708, because the Customs Tariff classification had to follow the section notes and use-based exclusion rules in Section XVII rather than the general compressor heading in Heading 8414. On the GST limitation and penalty issue, a long-accepted classification, without material showing wilful suppression, fraud, or intent to evade, did not justify proceedings under Section 74. The extended-period route and penalty basis were therefore rejected, and the matter was left for reassessment under the normal provisions after hearing the assessee.

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Issues: (i) Whether gas compressors manufactured for use in air-conditioning units of motor vehicles were classifiable under Heading 8414 or under Heading 8708 of the Customs Tariff Act, 1975 for GST rate purposes; (ii) Whether proceedings under Section 74 of the respective GST enactments could be sustained on the allegation of suppression of facts and whether penalty could be imposed.

Issue (i): Whether gas compressors manufactured for use in air-conditioning units of motor vehicles were classifiable under Heading 8414 or under Heading 8708 of the Customs Tariff Act, 1975 for GST rate purposes.

Analysis: Classification under the GST rate notification is governed by the Customs Tariff Act, 1975 and the interpretation rules, section notes and chapter notes applicable thereto. Heading 8414 covers air or gas compressors generally, but the goods in question were manufactured specifically for incorporation as parts of air-conditioning units in motor vehicles. On a conjoint reading of Section Note 2, Section Note 2(e) and Section Note 3 of Section XVII, goods which are machines or apparatus of Headings 8401 to 8479, or which are not suitable for use solely or principally with the articles of Chapters 86 to 88, do not qualify as parts and accessories of motor vehicles. The specific use of the compressors in motor vehicle air-conditioning units brought them within the scope of Heading 8708 as parts and accessories of motor vehicles, and not within Heading 8414.

Conclusion: The classification under Heading 8708 was upheld and the contention for classification under Heading 8414 was rejected.

Issue (ii): Whether proceedings under Section 74 of the respective GST enactments could be sustained on the allegation of suppression of facts and whether penalty could be imposed.

Analysis: The classification adopted by the assessee had been in use from the pre-GST period and had been accepted by the Department for a long time. In the absence of prior challenge, fresh facts, or material indicating wilful suppression or intent to evade tax, the extended period under Section 74 could not be invoked merely because a different classification view was later taken. The material supported a bona fide dispute on classification rather than fraud or wilful misstatement. Consequently, the foundation for penalty under Section 74 did not survive, and the matter required reconsideration for assessment and penalty under the normal provisions.

Conclusion: Invocation of Section 74 was set aside and the matter was remitted for quantification and consideration under Section 73 of the respective GST enactments.

Final Conclusion: The classification adopted by the Department was sustained, but the extended-period proceedings and penalty route under Section 74 were annulled, leaving only reassessment on the normal basis after hearing the assessee.

Ratio Decidendi: For tariff classification, the specific use and statutory section notes must prevail over a general heading; and where a long-accepted classification is changed without evidence of wilful suppression or intent to evade, the extended limitation under the penalty provision cannot be invoked.

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