Earn Boost Points on Every Purchase — Join Free & Save!

Hooligan Turbochargers In Stock Ready To Ship!

Contamination Kits In Stock!

Now Offering Vehicles For Sale!

D&J Precision Machine Brand

58 products

D&J Precision Machine isn’t just a name—it’s a promise. A promise of excellence, a commitment to innovation, and a partnership in performance. Join us as we power forward into the future.

D&J Precision | 2003+ Dodge Ram Cummins Stage 2 Performance Reman Head
$8,161.00
$8,161.00
Our Stage 2 Cummins Performance Head is designed for the performance enthusiast.  Includes everything in our Stage 1 Cummins Performance Head and a D&J Stage 2 Billet Intake Manifold, thread in...
D&J Precision | 2003-2007 Dodge Ram 5.9L Cummins Stage 1 Performance Reman Head
$4,534.00
$4,534.00
Our CR Stage 1 Cummins Performance Head is a step up in performance without the extra expense and work involved with an aftermarket intake.  Our Stage 1 Cummins Performance Head includes everythi...
Sold Out
D&J Precision | 2006-2018 Dodge Ram Cummins Custom LED Billet Valve Cover *DISCONTINUED*
$1,728.00
$1,728.00
Custom LED Cummins Billet Valve Cover fits 2006+ Cummins. Unlike the other billet valve covers on the market we designed our Custom LED Cummins Billet Valve Cover with function first. We designed ...
D&J Precision | 2007.5-2018 Dodge Ram 6.7L Cummins Stage 3 Performance Reman Head
$10,299.00
$10,299.00
Our Stage 3 Cummins Performance Head is designed for the extreme high performance.  Includes everything in our Stage 2 Cummins Performance Head, with a D&J Stage 3 Billet Intake Manifold, overs...
D&J Precision | 2007.5-2018 Dodge Ram 6.7L Cummins Stage 4 Performance Reman Head
$13,677.00
$13,677.00
Our Stage 4 Cummins Performance Head is designed for the extreme high performance.  Includes everything in our Stage 3 Head, with a D&J Stage 4 Billet Runner style intake manifold. This head ca...
D&J Precision | Billet Air Kill 5 Inch OD Cover
$896.00
$896.00
Billet Air Shut Off Guillotine for sled pulling applications. Dual internal spring design utilizing a 1/4in thick aluminum blade. Includes set screw or weld-on flange and genuine Cummins v-band. In...