Fuel Return Pressure Regulator Kit - 2011-2016 GM LML 6.6L RB40445130020

Part # 0445130020

You will need this return pressure regulator kit when you are replacing a CP4 pump that has thrown metal shavings throughout your fuel system. Metal debris will get in this regulator and won't allow proper return fuel pressure causing the engine not to function properly.

This Bosch Fuel Return Hose is a recommended replacement component for one or more of the following vehicle systems: ignition, and/or engine fuel management. This original equipment hose will provide the same performance, durability, and service life as your factory original equipment.