{"data":{"id":"us/40-cfr-1051.520","jurisdiction":"us","citation":"40 CFR 1051.520","heading":"How do I perform exhaust durability testing?","body":"Sections 1051.240 and 1051.243 describe the method for testing that must be performed to establish deterioration factors for an engine family.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER U—AIR POLLUTION CONTROLS","PART 1051—CONTROL OF EMISSIONS FROM RECREATIONAL ENGINES AND VEHICLES","Subpart F—Test Procedures"],"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":"57e49eb8c9ef9d6d628a84277b7c32b150daa9a55372dd9550d7428b5aadfc5a","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-1051.515","next":"us/40-cfr-1051.601"},"notice":"GroundRules: Original legal text. Not legal advice."}