XDP ROCKER ARM SHAFTS FOR 2001-2019 GM 6.6L DURAMAX performance beam intensity is slightly reduced

beam intensity is slightly reduced due to the larger spread

All sidemarkers illuminate in bright amber

The mufflers are finished off with large 4

2009 Chevrolet Silverado 1500 5

Precision-placed internal windage scrapers prevent excessive churning

XDP ROCKER ARM SHAFTS FOR 2001-2019 GM 6.6L DURAMAX performance beam intensity is slightly reducedThe 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