LS Swap Exhaust Manifolds Natural Cast Finish Multi-Fit 2.25 In. Outlet Gen III, Gen Iv Chevrolet LS Engine Hooker BlackHeart

Part #: 8501HKR

These Hooker BlackHeart cast iron exhaust manifolds have a 2.25-inch outlet, natural cast finish and are designed to hug close to the engine block so they fit into a wide variety of replacement and engine-swap applications. Their contoured design aims the exhaust directly toward the exit port for improved flow.Being cast iron means they will provide years of leak-free performance with less under-hood noise than traditional headers. Plus, their shorty design means you can route exhaust tubing close to your frame/floor pan for maximum ground clearance.Intended for GM LS engine swap applications where durability, quiet operation, and leak-free sealing is desiredPlain as-cast finish for a factory appearanceNickel plated steel mating flanges included (mating flange fasteners are not included)2.25 inch outlet diameter offers improved flow for maximum performance from a cast iron exhaust manifold2 bolt exit flange configuration matches the E-rod exhaust manifolds for a factory like fitment. This allows the use of factory gaskets and fasteners if desiredCast from Hi-Silicon-Moly Ductile Iron to provide durability and corrosion resistanceTight tuck design provides universal fit for most popular chassis and a clean traditional muscle car appearancePerfect complement to Hooker engine swap mount plates and Holley engine swap oil pansDetails:Bolt size: M8 x 1.25 x 25mmCARB (California) Compliant: NoCollector Diameter: 2.25 inchEmission Code: 8Engine: GM Gen III/IV (LS)Exhaust Series: HookerFinish: NaturalFlange Style: 2-BoltHeader Finish: NaturalHeader Style: ManifoldMaterial: Cast IronPrimary Tube Dia.: 1-3/4 inchProduct Type: ManifoldSubframe: StockTube Material: Cast IronType of Component: ManifoldWarning: California Proposition 65

Features:

• Intended for GM LS engine swap applications where durability, quiet operation, and leak-free sealing is desired
• Tight Tuck Design Provides Universal Fit
• Plain as-cast finish for a factory appearance
• Free-Flowing For Good Performance
• Nickel plated steel mating flanges included (mating flange fasteners are not included)
• Catalytic Converter Efficiency
• 2.25 inch outlet diameter offers improved flow for maximum performance from a cast iron exhaust manifold
• Hi-Silicon-Moly Ductile For Durability
• 2 bolt exit flange configuration matches the E-rod exhaust manifolds for a factory like fitment. This allows the use of factory gaskets and fasteners if desired
• Corrosion Resistant
• Cast from Hi-Silicon-Moly Ductile Iron to provide durability and corrosion resistance
• 2 Bolt Exit Flange Configuration
• Tight tuck design provides universal fit for most popular chassis and a clean traditional muscle car appearance
• Perfect Complement To Engine Swap Mount Plates
• Perfect complement to Hooker engine swap mount plates and Holley engine swap oil pans
• Perfect Complement To Holley Engine Swap Oil Pans

Hooker Exhaust Manifolds | 1.625 in. Tubing | 2.25 in. Collector | Hi-Silicon-Moly Ductile Iron | Natural Finish