Fits: 2004.5 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LLY/LBZ/LMM/LML Duramax Diesels 

Over time the stock LLY valve cover bolts start to wear out due to often removal of the valve covers. As the truck gets into the higher milage range, failures begin occurring causing the need to remove the valve covers. The ARP 12pt valve cover bolts are manufactured to be more resilient against the constant wear of a heavy duty diesel.

Features: 

• Black Oxide Coating 

• 170.00 PSI Tensile Strength 

• 8mm 12-Point Heads 

• Thread Size 1/4-20