D&J Precision Machine Products

Stage 2 VP44 Cummins Performance Head   Our Stage 2 VP44 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 VP44 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...