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 Predator 6.4 Cummins Long Block. Our Predator 6.4 Cummins come fully assembled from the oil pan to the D&J Billet LED Valve Cover. All D&J Precision Machine Performance Long Blocks are blueprinted, and balanced, oil clearance measured, and rings are file...

D&J Precision Machine Performance Series 5.9 Cummins Long Block   Our Performance Series 5.9 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...

D&J Precision Machine ENFORCER Deck Plate Long Block   Our ENFORCER 6.7 Deck Plate Cummins comes fully assembled from the oil pan to the D&J Billet LED Valve Cover.All D&J Precision Machine ENFORCER Long Blocks are blueprinted, balanced, oil clearance measured, and rings are...

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...

Cummins Titanium Retainers for 1998 and up 24v Cummins cylinder heads. Out titanium retainers are 10 grams lighter than the stock retainers and are included standard on D&J Stage 2, Stage 3 and Stage 4 cylinder heads Cummins titanium retainers are recommended when over...

The Strongest Billet Cummins Rods On The Market Proven over 3000hp and 4000tq our X-BEAM Billet Cummins Rods are designed with our unique ” X ” profile to maximize the strength while reducing weight. Our billet rods are made from extreme high impact tool...

Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block...