Enginetech TT193 Timing Chain Guide / Dampener - GM LS Series V8 - Fits 4.8L, 5.3L, 5.7L & 6.0L Chevy, GMC, Hummer, Isuzu, Saab 1997-2008
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Part No. EVP0448 | Non-DOD Valley Cover | Sold Each
Replacement engine valley cover plate for GM Gen IV LS V8 engines being converted away from Displacement on Demand (DOD / Active Fuel Management). The factory DOD valley cover houses the lifter oil manifold assembly that feeds the collapsing AFM lifters. When those lifters and the manifold are removed, this non-DOD plate takes their place and seals the valley correctly without the AFM oil passages.
Also a straightforward replacement for a cracked, warped, or leaking valley cover on engines already running a non-DOD setup. Manufactured to OE form, fit, and function by Enginetech, a longtime supplier to engine rebuilders and professional shops.
| Application | Engine | Years |
|---|---|---|
| GM / Chevrolet Truck, Van, SUV | 5.3L / 325 OHV V8 LS Series Vortec — 3.780" bore | 2007–2016 |
| GM / Chevrolet Truck, Van, SUV | 6.0L / 364 OHV V8 LS Series Vortec — 4.000" bore | 2007–2020 |
| GM / Chevrolet Truck, Van, SUV | 6.2L / 376 OHV V8 LS Series, Natural Asp. — 4.065" bore | 2007–2013 |
| Hummer | 5.3L / 325 OHV V8 "L, P" — 95.94mm bore | 2008–2010 |
| Hummer | 6.2L / 376 OHV V8 "2, 8" — 4.065" bore | 2008–2009 |
| Saab | 5.3L / 5326cc OHV V8 "M" — 96.00mm bore | 2008–2009 |
| Saab | 6.0L / 5967cc OHV V8 "H" — 101.6mm bore | 2008–2009 |
Applications listed are Gen IV LS platforms (LS2, LS3, LS7 family) in non-DOD / AFM delete configuration. Please verify your engine's VIN code and DOD status before ordering.
Note: A complete DOD / AFM delete also requires standard non-AFM lifters, a non-DOD camshaft, and an ECM recalibration. This plate is a component of that conversion, not a standalone kit. Intended for off-road, race, or engine rebuild use — check your local emissions regulations before installing on a street-driven vehicle.