The factory valley pan cover on 2007-2013 GM Gen 4 LS engines equipped without Active Fuel Management (AFM/DOD) can become an issue during engine swaps, rebuilds, and performance builds that delete the AFM system — the factory cover includes DOD provisions that create a leak path without the DOD hardware installed. The Granatelli Motor Sports 595003 is a direct-fit cast replacement that eliminates the DOD provision entirely, sealing the valley cleanly without modification. It replaces GM part number 12598832 and is compatible with a broad range of Gen 4 LS engine designations used across Chevrolet Silverado, Sierra, and GM SUV platforms with 4.8L, 5.3L, 6.0L, and 6.2L engines.

Granatelli Motor Sports 595003 Gen 4 LS Non-AFM/DOD Valley Pan Cover Features:

• Direct replacement for GM part number 12598832
• No DOD/AFM provision -- eliminates DOD leak path on non-AFM builds
• Fits 2007-2013 GM Gen 4 LS engines without AFM/DOD systems
• Compatible engine designations: L20, L92, L96, L99, L9H, LC8, LH8, LH9, LMF, LQ4, LQ9, LS2, LS3, LS4, LS7, LS9
• Fits LS2, LS3, LS7, Chevrolet Silverado, Sierra, and GM SUVs with 4.8L, 5.3L, 6.0L, and 6.2L engines
• Cast construction

Granatelli Motor Sports 595003 Gen 4 LS Non-AFM/DOD Valley Pan Cover Includes:

• Valley pan cover plate
• OEM-style valley pan gasket
• 11 bolts