4th gen 6.7 2013-2018

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...

The Strongest Billet Cummins Rods On The Market   Our stock length X-BEAM Billet Cummins Rods are proven to withstand over 3000hp and 4000 lb/ft. We design these rods with our unique "X" profile to maximize strength while reducing weight. Made from extreme high...

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...

D&J Precision Machine Street Performance 6.7 Cummins Long Block Our Street Performance 6.7 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 Stage...

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...

Performance Series 6.7 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 Performance Series Block. Key...

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 6.7 CR Cummins Performance Head Our Stage 2 6.7 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 6.7 CR Billet Intake Manifold, thread-in soft plugs...

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,...

Waterman Direct Drive Setup   No need to buy a whole new system when you can just buy the kit! Our Billet Direct Drive setup eliminates the complication of two electric lift pumps. It is capable of 300 GPH and engine dyno-proven to support...

For use with Dual CP3 Cover

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...

Mahle 1413H Rod Bearings (Drilled) Our Mahle 1413H rod bearings are drilled in-house to enable pressure lubrication of the wrist pins in our X-BEAM rods. These bearings are designed specifically for use with rods that feature pressure lubing capabilities. Key Features: Precision Drilled: Customized...

So, you've made some power but now you want more? Do you still want good drivability while running more competitive events? Well, look no further than our 250% over fuel injectors!    The nozzles are enlarged using inhouse micro EDM (Electrical Discharge Machining) and...

Have your original or aftermarket injectors left you stranded? Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 30% over fuel injectors!   At 30% over stock, these are an excellent upgrade for close...

Have your original or aftermarket injectors left you stranded? Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 45% over fuel injectors!   The nozzles are enlarged using abrasive flow honing technology and are...

Do you want to edge out that Mustang at the track or put another 5' on the next truck? Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 100% over fuel injectors!   The...

So, you've made some power but now you want more? Do you still want good drivability while running more competitive events? Well, look no further than our 200% over fuel injectors!    The nozzles are enlarged using inhouse micro EDM (Electrical Discharge Machining) and...

Are you looking for an increase in power without sacrificing drivability or reliability? Well, look no further than our 60% over fuel injectors!   The nozzles are enlarged using abrasive flow honing technology and are hydraulically flow matched to less than 1%. Each nozzle...