2011-2016 Duramax Billet Valve Covers (546-HSP)

Fits

These billet valve covers are designed to give your engine a clean, slick look! They feature a 1/2" NPT port in the center of the cover to optimize crankcase ventilation. They are made from 6061 T6 Aluminum, and they incorporate an O-Ring to eliminate the need for messy silicone. 

Part Number: 546-HSP

• 6061 T6 aluminum material
• CNC billet machined
• 1/2" NPT to -10AN aluminum 90° fitting to a -10AN nylon braided hose on each valve cover

Included Components:

• 36x M6x1.0x16mm Socket Cap Bolts
• 4x M4-0.7x6mm Socket Cap Screws

• It is recommended to run these valve covers with forward-facing thermostat housing, for there are no provisions to mount the factory hardware to the upper valve cover.

Compatible with:

• LML: 11+ VIN Code 8