Diesel Emission Retrofit Database
Instead of poring over dozens of Executive Orders,
Verification Letters and Attachments with thousands of
EPA Engine Family Numbers
, use our Diesel Emission Retrofit Database
to look up what diesel emission retrofit systems are verified for your
diesel engines.
Many on-road and off-road diesel vehicles will need to install retrofit technologies also known as Diesel Emission Control Strategies (DECS) to comply with current or soon to be adopted regulations. The State of California has established a multi-level verification system for diesel emission reduction retrofits.
Confused by all the different terms used in the Executive Orders, Verification Letter and Attachments? Find answers to frequently asked questionsin our FAQ section.
Quickly and easily learn which retrofit systems are verified for use on your diesel vehicles with our Diesel Emission Retrofit Database.
EPA Engine Family
The "EPA Engine Family" Search gives more definitive results for the diesel emission retrofit systems that are verified for a particular engine. Search our Database here.
Engine Make and Year
The “Engine Make and Year” Search* gives less definitive results for the
diesel emission retrofits systems verified for a particular engine and
should only be used if the EPA Engine Family Number cannot be found.
Search our Database here.