How to choose the correct Belt Tensioner for your engine:

There are basically around 5 available Belt Tensioners for the Cummins Marine diesel engines. Before selecting the appropriate tensioner, you must first determine your engines Critical Parts List (CPL). You can find your engine CPL on the engines DATA TAG. If you need help finding your engine CPL number, please reference the following article: How to Find your Cummins Marine Engine Details

Don’t see your engine CPL in the list below? Drop us a note with your engine serial number (ESN) and we will verify the correct tensioner.

CUMMINS PART 3970822 5333477 5333478 5333480 5333486
ENGINE CPL 8017, 8419 741, 1221, 1282, 1570, 1613, 1928, 1929, 2172, 2197, 2208, 2833, 2891, 8089 1322 953, 970, 1247, 8464  1975, 2205, 2956