Code of Federal Regulations > Title 40 > Chapter I > Part 1048 - PART 1048—CONTROL OF EMISSIONS FROM NEW, LARGE NONROAD SPARK-IGNITION ENGINES

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

Subpart A [§ 1048.1 - § 1048.30] - Subpart A—Overview and Applicability

Subpart B [§ 1048.101 - § 1048.145] - Subpart B—Emission Standards and Related Requirements

Subpart C [§ 1048.201 - § 1048.255] - Subpart C—Certifying Engine Families

Subpart D [§ 1048.301 - § 1048.350] - Subpart D—Testing Production-line Engines

Subpart E [§ 1048.401 - § 1048.425] - Subpart E—Testing In-use Engines

Subpart F [§ 1048.501 - § 1048.515] - Subpart F—Test Procedures

Subpart G [§ 1048.601 - § 1048.640] - Subpart G—Compliance Provisions

Subpart H - Subpart H [Reserved]

Subpart I [§ 1048.801 - § 1048.825] - Subpart I—Definitions and Other Reference Information