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djprecisionmachine.com
Shop long blocks
THE D&J IDENTITY
Headquartered in the heart of Ohio, D&J Precision Machine stands as a powerhouse in the diesel performance industry, tracing its roots from CEO Drew Pumphrey’s visionary intersection of service industry expertise and fabrication ingenuity. D&J’s commitment to innovation and excellence is evident in its state-of-the-art facility, where precision machinery and a meticulous approach to craftsmanship result in components that transcend mere construction, embodying the art of engineering. More than a name, D&J Precision Machine is a promise of excellence, innovation, and a collaborative journey into the forefront of the industry.
Customer Rides
Submit Your D&J Equipped Ride and Get Featured!
Whether we’re working the booth at an ODSS event, loading up a fresh engine in the shop, or answering technical questions over...
KYLE D • Watertown, SD
2004.5 RAM 2500 The Story Grandpa bought this pickup brand new in 2004 and it was used on the farm until 2011...
Matt G • Ocean City, MD
2012 RAM 2500 The Story This truck has been rear 4 linked, has a Chris Gelbaugh transmission, a D&J Enforcer engine with...
Let customers speak for us
Awesome product!
Awesome customer service!
Gerald Goss
Billet Valve Cover Raw Finish | 2006-Present Dodge Ram 5.9 & 6.7 Cummins
Valve cover for perfect and looks great. Thanks
Patrick Dorris
Billet Valve Cover Raw Finish | 2006-Present Dodge Ram 5.9 & 6.7 Cummins
This timing cover fit prefect on my 2006 cummins
Michael Shine
Billet Timing Cover | 2003-2018 Dodge Ram 5.9 & 6.7 Cummins
D&J Precision came highly recommended. The entire ordering process was easy and the engine was finished and shipped when they said it would be.
Asheville Engine
djprecisionmachine.com
Fast quick shipping gave complete info on my question if they fit on the cgi block for a 2020 cummins
Mike
Billet Freeze Plugs Kit | 2003-2018 Dodge Ram 5.9 & 6.7 Cummins
Easy to use website, quality productsat fair prices and fast shipping. What's not to like?
Robert Wilhite
Billet Valve Cover Raw Finish | 2006-Present Dodge Ram 5.9 & 6.7 Cummins
Austin was beyond great to work with! Answered all my questions and helped me from ordering right part to getting my core shipped back. Not to mention I got a great quality block that made my engine assembly smooth and easy.
Timothy Davis
djprecisionmachine.com
Love the look made right here in ohio
Nathan
Billet Valve Cover Raw Finish | 2006-Present Dodge Ram 5.9 & 6.7 Cummins
Awesome product for my truck
Dane
Billet Valve Cover Raw Finish | 2006-Present Dodge Ram 5.9 & 6.7 Cummins
Exceptional, quality everything was perfect from the packaging to the block its self. The build was flawless!
Timothy Davis
HP Reman Bare Block | 2003-2007 Dodge Ram 5.9 Cummins
Great service great product just wish I would of gotten a couple stickers
Tyler sieger
HEAD CORE CHARGE
Featured Products
View AllHP Reman Cylinder Head | 1989-1998 Dodge Ram 5.9 Cummins
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HP Reman Cylinder Head | 1998-2002 Dodge Ram 5.9 Cummins
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HP Reman Cylinder Head | 2003-2007 Dodge Ram 5.9 Cummins
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HP Reman Cylinder Head | 2007.5-2018 Dodge Ram 6.7 Cummins
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