CR 5.9 Cummins (2003 to 2004) Engine Parts

Heavy Hauler 5.9 Cummins Long Block Our Heavy Hauler 5.9 Cummins Long Blocks come fully assembled, including the oil pan, rear crank seal, front co...

D&J Precision Machine 9/16x6.5" Head Stud Kit   Our 9/16x6.5" head stud kit is designed and manufactured for ultimate performance and reliabili...

Cummins Billet Side Freeze Plug Introducing our newly designed Cummins Billet Side Freeze Plug that eliminates leaks! Our innovative design require...

Introducing our in-house designed 03-05 Cummins billet valve cover, balancing fit, finish, functionality, and budget.  Superior Construction ...

  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 State...

Use only the best with our D&J Cummins Head Gasket kit 2007-2007 5.9 Common Rail. Includes head gasket, exhaust manifold gaskets, long intake g...

Cummins Billet Rear Freeze Plug The Cummins Common Rail '03-to-Current Billet Rear Freeze Plug addresses the common issues associated with high coo...

5.9 Common Rail Cummins Precision Plus Reman Long Block Our 5.9 Common Rail Cummins Precision Plus Reman Long Blocks come fully assembled, includin...

D&J Precision Machine Street Performance 5.9 Cummins Long Block   Our Street Performance 5.9 Cummins Long Blocks come fully assembled, includi...

5.9 CR Stage 1 Cummins Performance Head   Our 5.9 CR Stage 1 Cummins Performance Head is a step up in performance without the extra expense and wor...

D&J Precision Machine Cummins Titanium Retainers   Designed for 1998 and up 24v Cummins cylinder heads, our D&J Precision Machine Cummins T...

 Billet Valve Cover 03-05 Black Powder Coat Our Billet Valve Cover 03-05 is meticulously designed in-house to achieve the perfect balance of fit,...

Cummins Billet Freeze Plugs Kit Introducing our newly designed Cummins Freeze Plugs that eliminate leaks! Our Billet Freeze Plugs kit features an i...

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. W...

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...

Cummins Billet Front Freeze Plug Introducing our newly designed Cummins Billet Front Freeze Plug that eliminates leaks! This innovative front freez...

Cummins 24v Heavy Duty 7/16" .168 Wall Push Rods   Our 7/16" .168 wall push rods for 24V Cummins engines provide unmatched strength and rigidity, m...