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D&J Precision Machine Brand

54 products
D&J Precision Machine • Diesel Performance Machining & Manufacturing The EXECUTIONER - D&J Precision Machine Featured Catalog New Products Crate Engines Cylinder Heads Custom Pistons Billet Rods Apparel Services D&J HP Reman Engines!
Regular price $2,999.99
Sale price $2,999.99
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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...
Regular price $1,199.99
Sale price $1,199.99
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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 ...
Regular price $7,099.99
Sale price $7,099.99
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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...
Regular price $9,050.00
Sale price $9,050.00
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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...
Regular price $574.99
Sale price $574.99
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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...
Regular price $799.99
Sale price $799.99
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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 ...