D&J Precision Machine Products

FEATURES LONG BLOCK Comprehensive Inspection: Disassembled, crack-checked, blasted, and cleaned before machining. Precision Machining: CNC bored, line bored, surfaced as needed, and torque plate honed to exact specifications. Custom ARP Head Studs: 9/16" head studs provide the best head-to-block seal possible. D&J ARP 9/16"...

FEATURES LONG BLOCK Comprehensive Inspection: Disassembled, crack-checked, blasted, and cleaned before machining. Precision Machining: CNC bored, line bored, surfaced as needed, and torque plate honed to exact specifications. Custom ARP Head Studs: 9/16" head studs provide the best head-to-block seal possible. D&J ARP 9/16"...

LONG BLOCK Comprehensive Inspection: Each engine is disassembled, crack checked, inspected, and all threaded holes are tapped, blasted, and cleaned before machining. Precision Machining: CNC blueprinted, bored, honed, and deck surfaced. Each crankshaft is checked for straightness and size and repaired as needed. Thorough...

The Ready Run Engine Package RAM 2500/3500 6.7L Cummins 2007.5- ‘12 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 BD components to...

The Ready Run 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 BD components to prepare it for installation. Including a complete high-pressure...

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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...

Stage 2 P-Pump Cummins Performance Head   Our Stage 2 P-Pump 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 P-Pump Billet Intake Manifold, thread-in soft plugs in the...

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 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 (excluding bridges, rockers, injector gasket and harness) .All D&J Precision Machine ENFORCER Long Blocks are...