This Sinister Diesel Duramax head gasket is a must - have for your 2001 - 2010 GM Duramax engine with LB7, LLY, LBZ, or LMM 6.6L engines. It's a direct replacement for blown or leaking OE head gaskets. Made of solid stainless steel, it offers excellent durability and a tight seal for top - notch performance. Each replacement head gasket has a 5 - layer stainless steel sandwich construction and heavy - duty seals for each cylinder. The adaptive fluoroelastomer (FKM) coating blocks fluids from passing the gasket, ensuring a leak - free operation. Sold individually, you can choose between the driver’s or passenger’s side. Part Number: SD - BD585. Features include multi - layer steel construction, a passenger - side design with Grade C 1.05mm thickness, and an FKM coating. The kit includes one Sinister Diesel Black Diamond 20mm Head Gasket.

Using this Duramax head gasket is easy. First, make sure your engine is turned off and cooled down. Then, carefully remove the old head gasket from your GM Duramax engine. Place the new Sinister Diesel head gasket in the same position as the old one, ensuring it fits snugly. Tighten the bolts according to the manufacturer's torque specifications. When installing, be careful not to damage the gasket, especially the FKM coating. During normal use, keep an eye on your engine for any signs of leaks. For maintenance, it's a good idea to check the gasket's condition during regular engine servicing. If you notice any damage or wear, replace the gasket promptly to keep your engine running smoothly.