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D&J Precision Machine Brand
61 productsD&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 | 2003-2005 Dodge Ram Cummins Billet Valve Cover
Regular price
$608.99
Sale price
$608.99
Regular price
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/per
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
Regular price
$389.99
Sale price
$389.99
Regular price
Unit price
/per
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
Regular price
$241.49
Sale price
$241.49
Regular price
Unit price
/per
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 | 0.500" Taller Billet Dodge Ram 5.9L Cummins Grid Heater Delete
Regular price
$120.74
Sale price
$120.74
Regular price
Unit price
/per
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 | 2003+ Cummins Billet Rear Freeze Plug
Regular price
$83.99
Sale price
$83.99
Regular price
Unit price
/per
The Cummins common rail ’03-to-current 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 | 2006-2018 Dodge Ram Cummins Black Powder Coat Billet Valve Cover
Regular price
$734.99
Sale price
$734.99
Regular price
Unit price
/per
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...
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