04-10 Duramax HSP Billet Valve Covers Color:Silk Satin Black If you are looking for

If you are looking for the ultimate in high pressure fuel supply

SW # 4 : 90 Hp increase

So you just purchased your shiny new pickup truck and you intend to do some seriously heavy duty hauling

It eliminates the possibility of air being drawn into the system

This solves the common issues with the factory supplied plastic pipe and intercooler boot

04-10 Duramax HSP Billet Valve Covers Color:Silk Satin Black If you are looking forOur billet valve covers are designed to give your engine a clean, sleek look. They feature a 1 2" NPT port in the center of the cover to optimize crank case ventilation. They are made from 6061 T6 Aluminum, and they incorporate an O Ring to eliminate the need for messy silicone. It is recommended to run these valve covers with our forward facing thermostat housing, for there are no provisions to mount the factory hardware to upper valve cover. Our