GM 12702899 6.6L Exhaust ManifoldCondition: REBUILDABLE CORE USED The GM 12702899 Exhaust Manifold is an OEM component engineered for superior performance in 6. 6L diesel engines found in vehicles like the Chevrolet Silverado and GMC trucks. Validated by multiple sources it is designed to handle high temperatures and maintain optimum exhaust flow for reliable engine efficiency and durability. All parts industrially cleaned and inspected for cracks and damage before shipping Part