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D&J Precision Machine Brand

55 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 | Cummins Billet Side Freeze Plug
$107.00
$107.00
Introducing our newly designed Cummins Billet Side Freeze Plug that does not leak! The newest side freeze plug design that we have created does not require drilling and tapping of the block! We hav...
D&J Precision | 2003-2024 Dodge Ram Cummins Billet Rear Freeze Plug
$134.00
$134.00
The Cummins common rail billet rear freeze plug takes care of the common issues of high coolant pressure. It bolts in the back of the block.  
D&J Precision | 2003-2005 Dodge Ram 5.9L Cummins Billet Valve Cover D&J Precision | 2003-2005 Dodge Ram 5.9L Cummins Billet Valve Cover
$949.00
$949.00
We designed this Cummins 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 6...
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D&J Precision | 24V Cummins 115LB Valve Springs
$548.00
$548.00
Our HD 115lb 24v Cummins Valve Springs have been proven with years of testing. We have seen over 120psi of boost on one of our Stage 3 cylinder heads with these springs. These are the same valve sp...
D&J Precision | 1989-1998 Dodge Ram 5.9L 12V Cummins Head Gasket Kit
$442.00
$442.00
Use only the best with our D&J Cummins Head Gasket Kit 1989-1998 5.9L 12V. Includes A head gasket, exhaust manifold gaskets, long intake gasket, air horn gaskets, injector install kit with cros...
D&J Precision | 2003-2007 Dodge Ram 5.9L Cummins Head Gasket Kit
$760.00
$760.00
Use only the best with our D&J Cummins Head Gasket kit 2007-2007 5.9 Common Rail. Includes genuine Cummins head gasket, exhaust manifold gaskets, long intake gasket air horn gasket, injector in...