Code of Federal Regulations > Title 40 > Chapter I > Part 1051 - PART 1051—CONTROL OF EMISSIONS FROM RECREATIONAL ENGINES AND VEHICLES

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

Subpart A [§ 1051.1 - § 1051.30] - Subpart A—Overview and Applicability

Subpart B [§ 1051.101 - § 1051.145] - Subpart B—Emission Standards and Related Requirements

Subpart C [§ 1051.201 - § 1051.255] - Subpart C—Certifying Engine Families

Subpart D [§ 1051.301 - § 1051.350] - Subpart D—Testing Production-Line Vehicles and Engines

Subpart E - Subpart E—Testing In-use Engines [Reserved]

Subpart F [§ 1051.501 - § 1051.520] - Subpart F—Test Procedures

Subpart G [§ 1051.601 - § 1051.650] - Subpart G—Compliance Provisions

Subpart H [§ 1051.701 - § 1051.745] - Subpart H—Averaging, Banking, and Trading for Certification

Subpart I [§ 1051.801 - § 1051.825] - Subpart I—Definitions and Other Reference Information