We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Regulations for Emissions from Vehicles and Engines

Final Rule for Control of Emissions From Nonroad Spark-Ignition Engines and Equipment

Rule Summary

The Environmental Protection Agency (EPA) is establishing new requirements to reduce emissions of hydrocarbon (HC) and oxides of nitrogen (NOx) from nonroad small spark-ignition engines below 19kW (“Small SI engines”) and marine spark-ignition engines (“Marine SI engines”). This rule includes exhaust and evaporative emission standards for these engines as well as related gasoline fuel tanks and fuel lines. This final rule also includes a wide range of amendments to other highway and nonroad programs.

You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.

Rule History

Additional Resources

Fact Sheet

Regulations for Emissions from Vehicles and Engines Home