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Michigan Motorsports Gen 4 LS Valley Cover without PCV | Non-AFM DOD Conversion | Fits 4.8L 5.3L 6.0L 6.2L LS2 LS3 L92 L96 LC9 LMG LY2 LH6 | Replaces GM 12598832 in Saudi Arabia Michigan Motorsports Gen 4 LS Valley Cover without PCV | Non-AFM DOD Conversion | Fits 4.8L 5.3L 6.0L 6.2L LS2 LS3 L92 L96 LC9 LMG LY2 LH6 | Replaces GM 12598832 in Saudi Arabia Michigan Motorsports Gen 4 LS Valley Cover without PCV | Non-AFM DOD Conversion | Fits 4.8L 5.3L 6.0L 6.2L LS2 LS3 L92 L96 LC9 LMG LY2 LH6 | Replaces GM 12598832 in Saudi Arabia Michigan Motorsports Gen 4 LS Valley Cover without PCV | Non-AFM DOD Conversion | Fits 4.8L 5.3L 6.0L 6.2L LS2 LS3 L92 L96 LC9 LMG LY2 LH6 | Replaces GM 12598832 in Saudi Arabia Michigan Motorsports Gen 4 LS Valley Cover without PCV | Non-AFM DOD Conversion | Fits 4.8L 5.3L 6.0L 6.2L LS2 LS3 L92 L96 LC9 LMG LY2 LH6 | Replaces GM 12598832 in Saudi Arabia Michigan Motorsports Gen 4 LS Valley Cover without PCV | Non-AFM DOD Conversion | Fits 4.8L 5.3L 6.0L 6.2L LS2 LS3 L92 L96 LC9 LMG LY2 LH6 | Replaces GM 12598832 in Saudi Arabia Michigan Motorsports Gen 4 LS Valley Cover without PCV | Non-AFM DOD Conversion | Fits 4.8L 5.3L 6.0L 6.2L LS2 LS3 L92 L96 LC9 LMG LY2 LH6 | Replaces GM 12598832 in Saudi Arabia Michigan Motorsports Gen 4 LS Valley Cover without PCV | Non-AFM DOD Conversion | Fits 4.8L 5.3L 6.0L 6.2L LS2 LS3 L92 L96 LC9 LMG LY2 LH6 | Replaces GM 12598832 in Saudi Arabia Michigan Motorsports Gen 4 LS Valley Cover without PCV | Non-AFM DOD Conversion | Fits 4.8L 5.3L 6.0L 6.2L LS2 LS3 L92 L96 LC9 LMG LY2 LH6 | Replaces GM 12598832 in Saudi Arabia

Michigan Motorsports Gen 4 LS Valley Cover without PCV | Non-AFM DOD Conversion | Fits 4.8L 5.3L 6.0L 6.2L LS2 LS3 L92 L96 LC9 LMG LY2 LH6 | Replaces GM 12598832

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Special Features

  • DOD/AFM Conversion Ready – Ideal for converting AFM/DOD systems on Gen 4 LS engines, this cover features no PCV provision and is precision-fit for non-AFM configurations.
  • Direct Fit for Gen 4 LS Blocks – Compatible with popular platforms including LS2, LS3, L92, L96, LC9, LMG, LY2, and LH6 engines from 4.8L to 6.2L.
  • Complete Install Kit Included – Includes cast aluminum valley cover, perimeter gasket, oil tower seals, and new mounting bolts for a full bolt-on solution.
  • Built-In Oil Tower Seal Ports – No need for additional block plug modifications; this cover seals off AFM oil passages directly.
  • OEM Quality Construction – Manufactured to meet or exceed OE specs using durable materials that withstand extreme temps and vibration.

Description

The Michigan Motorsports Gen 4 LS Valley Cover Without PCV is the go-to solution for converting Active Fuel Management (AFM) and Displacement on Demand (DOD) systems on your LS engine. Designed to replace GM part number 12598832, this high-quality cast aluminum cover is built specifically for non-AFM applications—making it perfect for DOD conversion projects. It removes the PCV port and includes new mounting bolts, a perimeter gasket, and oil tower seals for a complete and hassle-free installation. Whether you're rebuilding, swapping, or upgrading a 4.8L, 5.3L, 6.0L, or 6.2L Gen 4 LS engine, this valley cover delivers OEM-level fit and finish with the durability performance builders demand. Don't settle for patched solutions—run the right part the first time.

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