Genuine Bosch Pressure Relief Valve, 2003-2007 5.9L Cummins

Fuel Pressure At The Fuel Rail Is Monitored By The Fuel Rail Pressure Sensor. If Fuel Pressure Becomes Excessive, The Pressure Limiting Valve Opens And Vents Excess Fuel Pressure Vents Through The Fuel Pressure Limiting Valve Drain Port. One of the most common issues causing hard starts, lack of power, and poor fuel economy, is a wore or weak pressure relief valve.


Cross References:

Bosch: F00R000632,F 00R 000 632,1110010029,1 110 010 029.

Cummins: 3957077,4929618

Mopar: 5093113AA