Want to run AN fittings for all your radiator connections? Here's your solution for the lower radiator connections on your common rail Cummins! These use a 3 piece design that lets you mix and match the parts you need. The lower water neck, tensioner...

D&J designed this Cummins billet valve cover in house for the best balance of fit, finish, and functionality, while keeping your budget in mind. These valve covers are made from aircraft quality 6061-T6 aluminum, and come with all stainless steel fasteners. A baffle system...

Designed with a unique 45° center seal and dual outer O-rings, our billet soft plugs are machined in the USA from 6061 aluminum.

Want to run AN fittings for all your radiator connections? Here's your solution for the upper radiator connections on your common rail Cummins! It accepts a -20 AN straight cut O-ring fitting and a -12 AN straight cut O-ring fitting for your coolant bypass...

ARP® ADDS 260,000 PSI HEAD STUDS FOR DODGE/CUMMINS & DURAMAX DIESELS With performance enthusiasts adding increasing amounts of turbo boost to diesel applications, ARP® has provided an extra measure of security in the form of extra-strong head studs manufactured from the firm's proprietary Custom...

Designed with a unique 45° center seal and dual outer O-rings, our billet soft plugs are machined in the USA from 6061 aluminum.

Designed with a unique 45° center seal and dual outer O-rings, our billet soft plugs are machined in the USA from 6061 aluminum.

ARP Racing Fastener Technology To overcome the common head gasket failures on today's high performance diesel engines, industry leader ARP has introduced extra heavy duty head studs for the popular Ford, Dodge and GM diesel powerplants. These ARP studs are rated at extreme tensile...

Designed with a unique 45° center seal and dual outer O-rings, our billet soft plugs are machined in the USA from 6061 aluminum.

Designed with a unique 45° center seal and dual outer O-rings, our billet soft plugs are machined in the USA from 6061 aluminum.

Designed with a unique 45° center seal and dual outer O-rings, our billet soft plugs are machined in the USA from 6061 aluminum.

Turn over your Cummins with ease with this Cummins Crankshaft Barring Tool. It is much easier to use than the barring tool that interfaces the flywheel housing and starter ring gear. Remove the 4 bolts holding on the damper, install this tool, reinstall the...

Fitting, Adapter, AN to Straight Cut, Straight, Aluminum, Polished, -20 AN, -20 AN, Each

D&J designed this Cummins billet valve cover in house for the best balance of fit, finish, and functionality, while keeping your budget in mind. These valve covers are made from aircraft quality 6061-T6 aluminum, and come with all stainless steel fasteners. A baffle system...

Kevlar straps with a 9,800 lb capacity Quick release titanium buckles with a 3,000 lb rating For comparison, 3/8" cable has a 3,000 lb rating Sold individually; most engine configurations require two straps

Cummins Titanium Retainers for 1998 and up 24v Cummins cylinder heads. Out titanium retainers are 10 grams lighter than the stock retainers and are included standard on D&J Stage 2, Stage 3 and Stage 4 cylinder heads Cummins titanium retainers are recommended when over...

The Strongest Billet Cummins Rods On The Market Proven over 3000hp and 4000tq our X-BEAM Billet Cummins Rods are designed with our unique ” X ” profile to maximize the strength while reducing weight. Our billet rods are made from extreme high impact tool...