D&J Precision Machine Products

Billet Stage 2 P-Pump Intake Manifold The Billet Stage 2 P-Pump Intake Manifold is specifically designed to fit on our 24v cylinder head, providing a seamless integration with your engine setup. This intake manifold is compatible with all P-Pumps and VP-44 injection pumps and...

The 5 Axis Intake Horn fits a 6.7 intake and can have a 3.5" or 4" vibrant clamp welded onto it. It does not have an oil dipstick relocation bracket. It will work in factory pickup, but will need some custom fabrication to make...

OEM Cummins Oil Cooler 

D&J Precision Machine Dual CP3 Billet Timing Gear Housing Kit   D&J Precision Machine was the first to design and manufacture a billet timing gear housing to drive multiple CP3 pumps for the Cummins 5.9 and 6.7 Common Rail engines. Our customers were losing...

Stage 2 5.9 CR Cummins Performance Head Our Stage 2 5.9 CR Cummins Performance Head is designed for the performance enthusiast. It includes everything in our Stage 1 Cummins Performance Head plus a D&J Stage 2 5.9 CR Billet Intake Manifold, thread-in soft plugs...

For use with Dual CP3 Cover

5.9 Common Rail Cummins Precision Plus Reman Long Block Our 5.9 Common Rail Cummins Precision Plus Reman Long Blocks come fully assembled, including the oil pan and front timing cover. We use only the best products from our years of experience in the high-performance...

Stage 4 6.7L Cummins Performance Head Our Stage 4 Cummins Performance Head is designed for extreme high performance. It includes everything in our Stage 3 Head, along with a D&J Stage 4 Billet Runner Style Intake Manifold. This head can only be used with...

6.7 Cummins Essentials Reman Long Block Overview The Essentials Reman Long Block is designed to provide reliable and efficient performance for your diesel engine needs. Built with precision and care, this remanufactured engine is perfect for those seeking quality and affordability. Key Features Comprehensive...

Performance Series 5.9 CR Block At D&J Precision Machine, we understand the value of providing our customers with the option to rebuild their own engines. With that in mind, we present a budget-friendly, performance focused alternative to our full in-house engine builds: the Performance...

  5.9 CR HP Reman Cylinder Head   Our 5.9 CR Performance Cummins Reman Head includes essential upgrades to ensure durability and reliability, addressing common issues associated with these heads. One prevalent problem with factory and many aftermarket heads is the valve seats loosening...

D&J Precision Machine 9/16x6.5" Head Stud Kit   Our 9/16x6.5" head stud kit is designed and manufactured for ultimate performance and reliability. Custom made by ARP, these head studs are complemented by nuts and washers machined by us to ensure proper clearance for the...

D&J Precision Machine Street Performance 5.9 Cummins Long Block   Our Street Performance 5.9 Cummins Long Blocks come fully assembled, including the oil pan, rear crank seal, front cover and crank seal, and oil filter housing. Featuring our X-Beam Stock Length Billet Rods and...

Billet Turbo Drain -10AN Our Billet Turbo Drain -10AN is designed and machined in-house to provide a reliable and versatile solution for your turbo drain needs. This component utilizes an O-ring seal to ensure easy installation and a leak-free connection, allowing you to use...

Billet Direct Drive Mechanical Lift Pump Kit Say goodbye to the complications of dual electric lift pumps. Our Billet Direct Drive Mechanical Lift Pump Kit offers a streamlined solution with a robust 300GPH capacity, proven to support over 2200hp on one of our D&J...

12v HP Reman Cylinder Head   Our 12v Performance Cummins Reman Head is engineered with the highest standards of durability and reliability. Each head undergoes a meticulous remanufacturing process to ensure top-tier performance. Remanufacturing Process: Brand New Casting: Starting with a brand new casting...

The *insert name* Reman Engine is designed to provide reliable and efficient performance for your diesel engine needs. This engine starts with the Precision Plus Reman Long Block, and adds a host of components to get this engine ready for install! Including a complete...

P-Pump Cummins Billet Tappet Cover with Dual Baffled Breather Setup  Upgrade your engine's appearance with our premium P-Pump Cummins billet tappet cover. Crafted from high-quality billet aluminum, this tappet cover is designed for durability and enhanced aesthetics. The dual baffled breather setup minimizes oil...