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D&J Precision Machine Brand

56 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 | 2007.5-2018 Dodge Ram 6.7L Cummins Stage 1 Performance Reman Head
$4,492.00
$4,492.00
Our Stage 1 24v 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 everythin...
D&J Precision | 24V Cummins Titanium Retainers
$554.00
$554.00
D&J Precision Machine Cummins Titanium Retainers for 1998 and up 24v Cummins cylinder heads. Our valve spring titanium retainers are proudly made in-house and they are 10 grams lighter than the...
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D&J Precision | 24V Cummins 105LB Valve Springs
$465.00
$465.00
Our 105lb 24v Cummins Valve Springs have been proven with years of testing.  *Spring retainers not included.
$171.00 Off Sold Out
D&J Precision | 2003-2005 Dodge Ram 5.9L Cummins Custom LED Billet Valve Cover *DISCONTINUED*
$1,540.00
$1,540.00
$1,711.00
Custom LED Cummins Billet Valve Cover fits 2003-2005 Cummins. Unlike the other billet valve covers on the market we designed our Custom LED Cummins Billet Valve Cover with function first. We design...
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D&J Precision | 1989-1998 Dodge Ram 5.9L 12V Cummins Push Rods 7/16 .168 Wall
$450.00
$450.00
D&J builds their Cummins pushrods for 12V engines feature a 7/16 .168 wall tube for strength and rigidity. NOTE: Does NOT Fit 1998.5 24V Engines.
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D&J Precision | Billet Air Kill & Velocity Stack 5.5 Inch OD Cover
$1,141.00
$1,141.00
Billet Air Shut Off Guillotine with Velocity Stack for sled pulling applications. Dual internal spring design utilizing a 1/4 inch thick aluminum blade. It includes set screw or weld-on flange and ...