D&J Precision Machine Products

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...

OEM Cummins Oil Cooler 

D&J 2007.5-2018 6.7 HP Reman 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 alternative to our full in-house engine builds: the D&J HP...

For use with Dual CP3 Cover

5.9 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...

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...

D&J Precision Machine Performance Series 6.7 Cummins Long Block Our Performance Series 6.7 Cummins Long Blocks come fully assembled from the oil pan to the rocker box with our X-Beam Stock Length Billet Rods and our Stage 2 High-Performance Cylinder Head. We custom-build this...

6.7 CR Stage 1 Cummins Performance Head Our 6.7 CR Stage 1 Cummins Performance Head is a step up in performance without the extra expense and work involved with an aftermarket intake. This head includes everything in our HP Reman Head along with 105-pound...

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...

The Strongest Billet Cummins Rods On The Market   Proven to handle over 3300hp and 4000 lb/ft of torque, we design our X-BEAM 1-inch Billet Cummins Rods with a unique "X" profile that maximizes strength while reducing weight. Made from extreme high impact tool...

12 Valve HP Reman Cylinder Head   Our 12 Valve 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...

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...

Proven in 4,000+ HP Applications – Successfully tested in extreme high-horsepower diesel engines, delivering the rigidity and reliability required for the most demanding racing and performance builds Precision CNC-Machined High Impact Tool Steel Construction – Machined from premium-grade tool steel for exceptional strength, consistency,...

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...

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...

Stage 3 6.7L Cummins Performance Head Our Stage 3 Cummins Performance Head is designed for extreme high performance. It includes everything in our Stage 2 Cummins Performance Head, along with a D&J Stage 3 Billet Intake Manifold, oversize super alloy intake and exhaust valves,...

VP44 24v HP Reman Cylinder Head   Our VP44 24v 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 and...

FEATURES Precision Machined & Fully Remanufactured – CNC blue printed, bored, honed and surfaced. Comprehensive inspection checks for cracks, threaded holes, crank straightness and size and all other critical areas addressed. All critical dimensions including bearing clearances, piston-to-wall clearance, piston protrusion, deck and hone...