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U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 1042Subpart D - Subpart D—Testing Production-line Engines
§ 1042.301 - General provisions.
§ 1042.302 - Applicability of this subpart for Category 3 engines.
§ 1042.305 - Preparing and testing production-line engines.
§ 1042.310 - Engine selection for Category 1 and Category 2 engines.
§ 1042.315 - Determining compliance.
§ 1042.320 - What happens if one of my production-line engines fails to meet emission standards?
§ 1042.325 - What happens if an engine family fails the production-line testing requirements?
§ 1042.330 - Selling engines from an engine family with a suspended certificate of conformity.
§ 1042.335 - Reinstating suspended certificates.
§ 1042.340 - When may EPA revoke my certificate under this subpart and how may I sell these engines again?
§ 1042.345 - Reporting.
§ 1042.350 - Recordkeeping.
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