GM Duramax LLY-LMM 6.6 Liter 12pt lower rocker cover bolt kit. Application-specific bolts replace factory hardware with stronger fasteners that hold their clamping force through repeated heat cycles. The compact 12-point head makes tight spots easier to reach.

Made from heat-treated 8740 chrome moly with a black oxide finish, it is far stronger than factory and Grade 8 hardware.

Details:

• Material: 8740 Chrome Moly
• Finish: Black Oxide
• Package Type: Skin
• Kit Type: Stud

Fitment Notes:

• Engine Manufacturer: Duramax
• Engine Liter: 6.6 Liter
• Engine Designation: LLY, LBZ, LMM