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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 $803.00
Sale Price $803.00
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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...
Regular Price $4,153.00
Sale Price $4,153.00
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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...
Regular Price $437.00
Sale Price $437.00
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Our 7/16″ .168 wall push rods for 24V engines have the advantage of  strength and rigidity. They have been proven to 3000+ HP and are still good for your daily driven truck. Specs of Push Rods: 7/...
Regular Price $437.00
Sale Price $437.00
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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.
Regular Price $1,108.00
Sale Price $1,108.00
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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 ...
Regular Price $1,454.00
Sale Price $1,454.00
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The Billet Stage 2 Intake Manifold is designed for our Stage 2 cylinder heads. These intakes utilize the stock intake horn locations and fuel setups.  It comes with all the mounting hardware needed...