Sinister Diesel Heads Up Kit w/ARP Heads for 2007.5-2010 Duramax LMM

Complete Heads Up Kit for 2007.5–2010 Duramax LMMUpgrade your Duramax with the Sinister Diesel Heads Up Kit – the ultimate solution to common head gasket and sealing issues found in the 2007.5–2010 Chevy/GMC Duramax LMM 6.6L. Designed for performance and reliability, this all-in-one kit includes everything you need for a complete head stud job. No more guesswork—just premium components engineered to handle high horsepower and heavy towing demands.Includes Premium ARP2000 Head StudsTrusted by top racing professionals for over 50 years, ARP delivers unmatched strength and durability. Each stud is cold-forged, heat treated, and rated at 220,000 psi—far exceeding factory head bolts. This ensures maximum clamping force, consistent torque readings, and a leak-proof seal between your cylinder heads and engine block.Duramax-Specific MLS Grade C Head GasketsManufactured to OEM standards, these multi-layered steel (MLS) gaskets feature a polymer-coated surface and raised beads for superior sealing. The Grade C 1.05mm design compensates for resurfaced heads, restoring proper compression and preventing coolant or oil leaks under extreme conditions.Complete Cylinder Head Gasket KitThis kit comes with every gasket and seal needed for a proper installation. Includes gaskets for the exhaust manifold, up-pipe, upper and lower valve covers, valve cover grommets, valve seals, and turbo drain seals—eliminating the need to source extra parts separately.Why Choose Sinister Diesel?Sinister Diesel Heads Up Kits are designed to solve the biggest vulnerabilities in modern high-performance diesel engines. Whether you’re towing, racing, or daily driving, our kits provide the strength and reliability your Duramax LMM needs to perform at its best.Kit Contents:ARP Head Stud Kit (ARP2000)MLS Grade C Head Gaskets (1.05mm)Complete Cylinder Head Gasket Set

• Complete Duramax LMM Head Stud Kit – Designed specifically for 2007.5–2010 Chevy/GMC Duramax 6.6L LMM engines; includes ARP2000 studs, MLS Grade C head gaskets, and a full cylinder head gasket set for a reliable installation.
• Stronger Than Factory Head Bolts – ARP2000 head studs deliver 220,000 psi tensile strength, ensuring maximum clamping force, accurate torque readings, and superior sealing under high boost and towing loads.
• Premium Grade C MLS Head Gaskets – 1.05mm multi-layer steel gaskets with polymer coating and raised sealing beads provide OEM-quality fit, durability, and leak prevention even after head resurfacing.
• All-In-One Gasket & Seal Kit – Includes exhaust manifold gaskets, up-pipe gaskets, valve cover gaskets and grommets, valve seals, and turbo drain seals—everything needed for a complete head stud job.
• Engineered for Duramax Performance – Built to solve common head gasket failures in the LMM platform; ideal for high horsepower builds, heavy towing, racing, or daily driving reliability.