3rd gen 5.9 2003-2004

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...

  5.9 Cummins Tool Steel Wrist Pins   D&J Precision Machine manufactures our tool steel wrist pins in-house at our facility in the United States, using the highest quality materials. Leveraging years of experience in high-performance diesel technology, we have designed these wrist pins...

1/2" Taller Billet 5.9 Cummins Grid Heater Replacement   Our 1/2" Taller Billet 5.9 Cummins Grid Heater Delete is designed to provide extra clearance for injection pumps and injection lines, optimizing airflow into your engine and preventing boost leaks for your Dodge 5.9L Cummins...

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...

Billet Direct Drive Mechanical Lift Pump Kit Say goodbye to the complications of dual electric lift pumps. Our Billet Direct Drive Mechanical Lift Pump Kit offers a streamlined solution with a robust 300GPH capacity, proven to support over 2200hp on one of our D&J...

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...

Performance Series 5.9 CR 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, performance focused alternative to our full in-house engine builds: the Performance...

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...

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 Firepunk FPC1 Competition Stage 1 Transmission for your 03-04 Dodge 5.9L Cummins is the perfect option for the serious performance enthusiast. As Firepunk’s most popular build, the Comp 1 provides a well-balanced transmission for those who need to use their truck daily and...

The Firepunk FPTMP Towmaster Plus Transmission for your 03-04 Dodge 5.9L Cummins is designed for the diesel owner who enjoys the added horsepower and torque from a tuner along with small upgrades that maximize a trucks efficiency and towing capability. This transmission comes equipped...

The Firepunk FPC3 Competition Stage 3 Transmission for your 03-04 Dodge 5.9L Cummins is for the ultimate street truck making big power. Suited for a variety of High Horsepower trucks, this transmission is built using oversized shafts capable of holding extreme HP and torque....

The Firepunk FPC2 Competition Stage 2 Transmission for your 03-04 Dodge 5.9L Cummins is a full billet build. This is a 1000HP capable transmission that will feed your desire to build a monster and have a transmission that puts the power to ground. The...

The Firepunk FPST Street & Track Transmission for your 03-04 Dodge 5.9L Cummins is perfect transmission package for those who use their truck for street duties and track time. The name says it well, a transmission designed to for a hot street truck that...

This part can be used as a direct replacement for Bosch part number 0 445 226 014, as well as Cummins part number 4929618, 3957077, and 5086869AB.  

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...

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...