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D&J designed this Cummins billet valve cover in house for the best balance of fit, finish, and f..
Our Cummins Reman Head has all the necessary upgrades to make your head durable and reliable.Yo..
The Strongest Billet Cummins Rods On The MarketProven over 3000hp and 4000tq our X-BEAM Bi..
Our Stage 3 Cummins Performance Head is designed for the extreme high performance. I..
Our Stage 2 Cummins Performance Head is designed for the performance enthusiast. Includes..
Our Stage 1 Cummins Performance Head is a step up in performance without the extra expense and ..
Machined in house from 6061 aluminum. Our Cummins billet timing cover is designed to use factor..
D&J Precision Machine HD 115lb 24v Cummins Valve Springs have been proven with years of testing...
Cummins Titanium Retainers for 1998 and up 24v Cummins cylinder heads. Out titanium retainers a..
One-piece Cummins push rods for 24V engines. Produced from 4130 chrome molybdenum and heat treated t..