Hooker LS Engines Cast Iron Black Ceramic Finish Exhaust Manifolds # 8501-3HKRHooker LS Engines Cast Iron Black Ceramic Finish Exhaust Manifolds # 8501 3HKR Exhaust Manifolds, High Silicon Ductile Iron, Black Ceramic Coated, Chevy, LS Series Engines, Pair Exhaust Manifold Material: High silicon ductile iron Exhaust Manifold Color: Black ceramic coated Mounting Hardware Included: No Exhaust Manifold Gaskets Included: No Quantity: Sold as a pair. Notes: Intended for all GM LS (except LS7 and LS9) engine swap applications, Fitment