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D&J Precision Machine Brand

61 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.

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D&J Precision | 0.500
$124.99
$124.99
0.500″ Taller Billet 5.9 Cummins Grid Heater Delete suited for 1998.5-2007 Dodge 5.9L Cummins Diesel. Extra clearance Billet aluminum Get more airflow into your engine and avoid boost leaks. ...
D&J Precision | 2006-2024 Dodge Ram Cummins Black Powder Coat Billet Valve Cover
$786.99
$786.99
We designed the Billet Valve Cover in-house for the best balance of fit, finish, and functionality, while keeping your budget in mind.   These valve covers are made from aircraft quality 6061-T6 al...
D&J Precision | 24V Cummins Titanium Retainers
$400.99
$400.99
Designed for the 24v Cummins cylinder heads, our D&J Precision Machine Cummins Titanium Retainers are meticulously crafted in-house for superior performance. These valve spring titanium retaine...
D&J Precision | Cummins Billet Front Freeze Plug
$64.99
$64.99
Introducing our newly designed Cummins Billet Front Freeze Plug that does not leak! Our billet front freeze plug is designed to be held in by a factory fan support. Included: 1 Front Billet Fre...
D&J Precision | Billet Air Kill 5.5 Inch OD Cover
$621.99
$621.99
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...
D&J Precision | 2003+ Dodge Ram Cummins Performance Reman Head
$2,204.99
$2,204.99
Our 24v Performance Cummins Reman Head has all the necessary upgrades to make your head durable and reliable.  We have fixed all the common issues these heads have.  One of the most common prob...