XDP XD389 Performance Valve Spring & Retainer Kit 89-98 Dodge Ram 5.9L Cummins AFE-51-72002 and when allowed to become

and when allowed to become warn

To install the ComMod on the under dash controller

Polyurethane bushings and sleeves ensure a long lifespan and quiet operation

With Dorman's Pan design

causing hard starts

XDP XD389 Performance Valve Spring & Retainer Kit 89-98 Dodge Ram 5.9L Cummins AFE-51-72002 and when allowed to becomeOne of the most overlooked performance parts in most 12V Cummins performance builds is the valve springs. They may not be something you can see, but we can assure you, they are essential in ensuring your engine is operating properly with all your other performance parts. The factory springs are not designed to handle the elevated boost levels that are typical in modified applications causing valve float. This will drastically hurt your engine