MILIPARTS Aluminium Engine Valve Covers for 1999–2008 GM V8s — Full Set with Gaskets & Hardware

MILIPARTS aluminum valve covers are a direct-fit replacement for many 1999–2008 GM V8 engines, supplying a durable, leak-resistant housing plus gaskets, bolts and adhesive for a complete install.

If you're repairing or upgrading an LS-series or Gen III/IV V8 in a Chevy, GMC, Cadillac, Hummer, Pontiac or Buick from the late 1990s through 2008, these MILIPARTS valve covers are made to match OEM fitment and mounting points while providing corrosion-resistant aluminum construction. The set ships with replacement gaskets, glue and hardware so you get everything needed to restore a proper seal and tidy engine bay appearance without hunting for extra parts.

Which vehicles and engines will these valve covers fit?

These covers are designed for a wide range of GM V8 platforms—LS1, LS2, LS3, LQ4, LQ9, LMT and L59—covering 4.8L through 6.2L displacements. Check your vehicle year, engine code and original part numbers against the provided references to confirm compatibility before purchase.

• Compatible models include Silverado, Sierra, Tahoe, Suburban, Avalanche, Escalade, Corvette, Camaro and more.
• Engine families: LS-series and related V8s from 1999–2008.
• Reference OEM numbers: 12570427 (front left), 12582224 and manufacturer cross-refs listed.

How do these valve covers match OEM performance and stop leaks?

MILIPARTS manufactures these covers to meet or exceed OEM tolerances and sealing surfaces. The set includes molded gaskets and installation adhesive to recreate the factory seal and keep oil where it belongs.

• Precision-machined mating surfaces for correct bolt torque and alignment.
• Included gaskets and glue to prevent oil seepage at seams and bolt holes.
• Aluminum construction resists warping and cracking compared with some stock composites.

What hardware and extras come with the valve cover kit?

Each kit contains the complete set required for installation so you can replace both valve covers without sourcing separate parts. That reduces downtime and simplifies the repair process.

• Full valve cover set (left and right).
• New gaskets, adhesive and all necessary bolts included.
• Clear reference numbers to verify fit: 12570427, 12582224 and cross-references for OEM matching.

How difficult is installation and who should install these parts?

Installation is straightforward for anyone with basic mechanical skills and standard hand tools, but proper torque and gasket seating are important to avoid leaks. Professional installation is recommended if you lack experience removing intake components or working near sensors and wiring.

• Typical install requires removal of intake or ignition components on some models.
• Torque fasteners to factory specs and use supplied gasket adhesive as instructed.
• Contact MILIPARTS customer support for fitment questions before ordering.

Who is this pack for? Mechanics, restoration hobbyists and DIY owners of late‑1990s to 2008 GM trucks, SUVs and performance cars who need a reliable, OEM-compatible valve cover replacement will value this MILIPARTS kit. It’s also suited to anyone refreshing a V8 engine with parts that simplify assembly: the included gaskets, glue and bolts eliminate the need to source separate components. Always verify engine family and part cross‑references for precise fitment before purchase.