StacksVerified U.S. regulatory reference

Part 1048 — Control of Emissions from New, Large Nonroad Spark-Ignition Engines

Subpart A — Overview and Applicability

Subpart B — Emission Standards and Related Requirements

Subpart C — Certifying Engine Families

Subpart D — Testing Production-line Engines

Subpart E — Testing In-use Engines

Subpart F — Test Procedures

Subpart G — Compliance Provisions

Subpart I — Definitions and Other Reference Information