2004.5-2010 GM 6.6L Duramax Common Rail High Pressure Relief Valve
This is the valve for the 2006 - 2010 Duramax LBZ / LMM engines. It also works great on the 04-05 LLY engines due to the slightly higher opening PSI. These valves are known to go bad and open prematurely causing a "fuel rail PSI low" problem. Once a valve is weakened it tends to get worse. Replacing the valve with a new one is much safer than shimming it and taking your chances with the high (25,000+ PSI) pressures that this valve was designed to protect from.
Find all your GM 6.6 Duramax diesel performance, repair, and upgrade needs online here or in person at Huckstorf Diesel’s sales and repair center located in Franklin / Milwaukee Wisconsin.
