EPA

EPA Verifications

PRODUCT ENGINE COVERAGE / EPA EMISSIONS REDUCTION CREDIT VALUES
Purifilter

1994-2003 HD Highway Engines:

PM: 90%

HC: 85%

CO: 75%

Diesel Retrofit Techology Verification

EPA Verification Letter

AZ Purifier/Purimuffler with CCV

1991-2004 HD High Engines:

PM: 40%

HC: 75%

CO: 60%

Diesel Retrofit Techology Verification

EPA Verification Letter

AZ Purifier/Purimuffler

1991-2003 Cummins/International Medium HD Engines:

PM: 40%

HC: 70%

CO: 40%

Diesel Retrofit Techology Verification

EPA Verification Letter

1991-1993 Cummins Heavy HD Engines:

PM: 35%

HC: 70%

CO: 40%

Diesel Retrofit Techology Verification

EPA Verification Letter

All HD Highway 4 Stroke Engines:

PM: 20%

HC: 50%

CO: 40%

In respect to EPA Verifications, there is no verification letter for the 20% PM reduction for the ECS Purimuffler. This verification is carried over from the EPA Urban Bus Retrofit Rebuild Program. For further information, please contact Carl Wick from the US EPA at 202-343-9331.

Diesel Retrofit Techology Verification

All HD Highway 2 Stroke Engines:

PM: 20%

HC: 50%

CO: 40%

Diesel Retrofit Techology Verification

EPA Verification Letter

Purifilter Plus

1994-2006 Non-EGR Engines:

PM: 90%

HC: 85%

CO: 75%

Diesel Retrofit Techology Verification

EPA Verification Letter