Pacbrake PACC40076 PRXB 4″ Inline Kit – GM Duramax 6.6L (2001-2005) with 2nd alternator

Code: PACC40076


In Stock


Pacbrake’s flagship product, the PRXB (pressure regulated exhaust brake), is the unquestioned leader in the supplemental brake industry. The patented PRXB design delivers the strongest braking horsepower, greatest speed reductions and shortest stopping distances possible without the use of service brakes. It maintains optimum retarding performance by maximizing the exhaust backpressure throughout the entire RPM range. Unlike a typical exhaust brake, which requires high RPMs to work properly, the PRXB delivers constant exhaust pressure (braking) as early as 1200 RPM through to the maximum allowable RPM.

Additional information

Weight 30 lbs

Model Specific

This part fits select models

Make Model Year
Make Model Year
Chev/GMC Duramax 6.6 LB7 2001
Chev/GMC Duramax 6.6 LB7 2002
Chev/GMC Duramax 6.6 LB7 2003
Chev/GMC Duramax 6.6 LB7 2004