LLY Duramax Engine Parts

The XDP X-TRA Cool Direct-Fit Replacement Radiator XD295 is an upgrade for the old leaking radiator in your 2001-2005 GM 6.6L Duramax LB7 & LLY...

The ARP Diesel Head Stud Kit 230-4201 is a must have in any high performance 2001-2016 GM 6.6L Duramax. To overcome head gasket failures that can o...

The XDP Performance Valve Springs & Retainer Kit XD386 are a perfect upgrade for your modified 2001-2016 GM 6.6L Duramax. Camshaft upgrades an...

The XDP Rocker Arm Shafts XD385 are specially designed to minimize the common oiling issues in the 2001-2019 GM 6.6L Duramax engines. From the fac...

The XDP Billet Rocker Arm Valve Bridge Set XD384 will greatly improve the factory valvetrain in your modified 2001-2016 GM 6.6L Duramax. The OE ro...

Increase the output of the charging system in your 2001-2007 GM 6.6L Duramax with the XDP Wrinkle Black HD High Output Alternator XD355. The Duram...

Avoid catastrophic engine failure from a sheared dowel pin in your 2001-2016 GM 6.6L Duramax with the XDP Duramax Crankshaft Pin Kit XD331. From t...

Restore lost power from the valvetrain in your 2001-2016 GM 6.6L Duramax with the XDP Pushrods 7/16" Competition & Race Performance XD316. The ...

The XDP Pushrods 3/8" Street Performance XD315 eliminate the weak link in the valvetrain of your 2001-2016 GM 6.6L Duramax. The factory pushrods in...

Upgraded 0.875 inch diameter pushrods for GM's Duramax 6.6L diesel engines. Produced from 4130 chrome molybdenum steel and heat treated to Rockwell...

Introducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engin...

Fleece Performance billet rocker arm bridges for the GM Duramax. These bridges offer a massive 2.5-time strength improvement over factory bridges. ...

Introducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engin...

Dress up your engine bay with our billet aluminum oil cap for the Chevy Duramax! Includes o-ring and cam-lock and is a direct replacement for your ...

Assemble the bottom end in your engine with the ARP 900-0950 Piston Ring Compressor (4.095" Bore). The Ring Compressor is CNC machined from 6061-T6...

Flywheel bolts play and important role in the performance and safety of race cars and street machines alike. That's why the fastener experts at ARP...

A premium grade 8740 alloy chrome-moly steel is used to manufacture ARP High Performance connecting rod bolts. This material is heat-treated to pro...

When you are setting up a Duramax engine for drag racing and sled pulling, ARP main and head studs are a must have item! Keep your mains from walki...

Flexplate bolts play an important role in the performance and safety of race vehicles and street machines. That's why the fastener experts at ARP h...

Purchase the ARP 900-0750 Piston Ring Compressor (4.075" Bore) to save time and hassle on your engine build. Built tough, this Piston Ring Compress...

Purchase the ARP 900-0550 Piston Ring Compressor (4.055" Bore) to save time and hassle on your engine build. Built tough, this Piston Ring Compress...

The ARP Diesel Custom Age 625+ Head Stud Kit 230-4202 is the ultimate head stud kit for high horsepower 2001-2016 GM 6.6L Duramax engines. ARP has ...

ARP Valve Cover Bolt Kits are rated at 170,000 PSI tensile strength which is substantially stronger than grade 8 hardware. Offered for all Duramax ...