{"data":{"id":"us/40-cfr-1042.635","jurisdiction":"us","citation":"40 CFR 1042.635","heading":"National security exemption.","body":"Engines qualify for a national security exemption as described in 40 CFR 1068.225. This applies to both freshly manufactured and remanufactured engines.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER U—AIR POLLUTION CONTROLS","PART 1042—CONTROL OF EMISSIONS FROM NEW AND IN-USE MARINE COMPRESSION-IGNITION ENGINES AND VESSELS","Subpart G—Special Compliance Provisions"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"c703419dd1b1fe53dcdf3460ba0b10aabc5687787b7bc85d0b894d1ce6dc0fc0","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-1042.630","next":"us/40-cfr-1042.650"},"notice":"GroundRules: Original legal text. Not legal advice."}