A-Premium LS Gen 4 Valley Cover Plate Kit - Polished Aluminum Non-AFM/DOD Block-Off for LS2/LS3/LS7/L92

The A-Premium LS Gen 4 Valley Cover Plate Kit is a polished aluminum block-off assembly that replaces AFM/DOD hardware on Gen IV LS V8 engines to restore a solid valley cover and simplify oil management.

This kit is built for GM Gen 4/IV V8s (LS2, LS3, LS7, L92) in 4.8L, 5.3L, 6.0L and 6.2L displacements and fits many Chevrolet, GMC and Cadillac trucks and SUVs from the 2007–2013 era. It removes the factory Active Fuel Management/Displacement On Demand components by providing a sturdy non-AFM valley cover, plus the gasket and fasteners needed for installation. The polished aluminum finish is corrosion-resistant and presents a clean engine-bay appearance while addressing known AFM/DOD leak and maintenance issues.

How does this valley cover replace AFM/DOD components?

The kit provides a solid aluminum valley cover that occupies the space and mounting points used by AFM/DOD parts. By blocking off those cavities it prevents oil pooling and seals the valley for a simpler, more reliable setup without the AFM plumbing and solenoids.

• Direct-fit for Gen IV LS engine valley mounting points
• Blocks AFM/DOD oil passages with machined surfaces
• Includes OEM-style gasket and mounting bolts for a complete swap

What vehicles and engines will this kit fit?

Compatibility targets GM Gen 4 V8 families: LS2, LS3, LS7 and L92 in 4.8L–6.2L displacements. It suits many Chevrolet, GMC and Cadillac trucks, SUVs and vans from the 2007–2013 production years.

• Common fits: Silverado, Sierra, Tahoe, Yukon, Escalade, Express, Savana
• Designed for Gen IV blocks that originally had AFM/DOD hardware
• Referenced part numbers: 12598832 and 12610141 for cross-checking

What components come in the package and what’s needed for installation?

The kit ships with everything required to replace the valley cover: the machined aluminum plate, a valley pan gasket, and the bolts to secure it. Installation is straightforward for a mechanically competent DIYer or mechanic with typical hand tools.

• Included: 1 aluminum non-AFM/DOD valley cover, 1 valley pan gasket, 11 bolts
• No additional block-off plates or specialty adapters required
• Basic tools and torque wrench recommended; follow factory torque specs

Who is this for? If you own a Gen IV LS family V8 with factory AFM/DOD and you want a simpler valley setup—either to eliminate AFM-related maintenance, reduce leak points, or tidy the engine bay—this A-Premium kit offers a complete, direct-fit solution. It’s appropriate for owners of late-2000s to early-2010s Chevrolet, GMC and Cadillac trucks, SUVs and vans who prefer a durable, polished replacement valley cover and the convenience of a full hardware and gasket package.