XDP ROCKER ARM SHAFTS FOR 2001-2019 GM 6.6L DURAMAX performance 2009 Chevrolet Silverado 1500 5

2009 Chevrolet Silverado 1500 5

Boot retaining lip on inlet for positive clamp reinforcement to eliminate any blown boots

Image shown may be a polished version

Derringer connects to your OBD-II port

beam intensity is slightly reduced due to the larger spread

XDP ROCKER ARM SHAFTS FOR 2001-2019 GM 6.6L DURAMAX performance 2009 Chevrolet Silverado 1500 5The XDP Rocker Arm Shafts XD385 are specially designed to minimize the common oiling issues in the 2001 2019 GM 6. 6L Duramax engines. From the factory, the oil supply to the rocker arm is shut off as the valve is opened. This lack of lubrication can cause excessive wear on your valvetrain and premature failures, especially in high performance applications. The XDP Shafts feature revised oil grooves that align with the oil hole in the bushing so you