1989-1998 Cummins 5.9L 4" Exhaust Brake 60psi no-APPS (1037135)It has been almost 30 years since we started shipping our first exhaust brakes. With that many hill and mountain roads experienced, we used the knowledge gained to continue to deliver the best designed exhaust brake for your application. Incorporating BD's exclusive Variable Orifice Technology, BD's solid, offset butterfly, spring loaded cylinder and pressure regulation provides up to 150 retarding horsepower throughout the engine's RPM range not just

Compatible with Most Diesel Oils: Mixes seamlessly with your preferred high-quality diesel lubricants

We also have including the

2002-2004 Duramax LB7 PPE Cast Steel Thermostat Housing Cover (119000530)

compatible with 1989–2019model years

The MAHLE 224-3503WR Piston With Rings (Standard) is a factory replacement for your 2003-2007 Ford 6

Should be used in conjunction with 1600410 kit

Sold as balanced set upon completion of race waiver

IMPORTANT: The factory downpipe (2001-2004 LB7 only) does not fit aftermarket manifolds and up-pipes

Recommend timing set at 23-28 degrees

The coolant pressure inside the engine block can reach 70+psi at high rpm before the thermostat fully opens

Install an ARP 250-4203 Diesel Head Stud Kit from OCDiesel and upgrade your 2008-2010 Ford 6

The Katech C5-R race timing chain gets proprietary features over the standard IWIS aftermarket LS chains which includes "fine blanked plates" and a proprietary pin coating