These Hooker BlackHeart cast iron exhaust manifolds are designed for 1990-2004 GM S10/Sonoma trucks with LS engines. They feature a 2.5 inch outlet, a natural cast finish and and are designed to be used with Hooker BlackHeart Engine Mounts (P/N 71221029HKR) and Transmission Crossmembers (P/N 71222020HKR, 71222018HKR, or 71222019HKR) for a trouble free install.

• LS Swap Exhaust Manifolds for 1990-2004 GM S10/Sonoma, Designed as One Part of a Fully Engineered Swap System for an Easy Bolt-in Engine Swap
• Eliminate the Installation Guesswork and Fitment Compatibility Issues that Can Be Common with Universal Engine Swap Components
• Cast from Hi-Silicon-Moly Ductile Iron to Provide Durability and Corrosion Resistance
• 304 Stainless Steel MLS Collector Gaskets, and Mating Flange Hardware Included
• 2.5-inch Outlet Diameter Offers Improved Flow for Maximum Performance from a Cast Iron Exhaust Manifold
• Designed to be Used with Hooker BlackHeart Engine Mounts (P/N 71221029HKR) and Transmission Crossmembers (P/N 71222020HKR, 71222018HKR, or 71222019HKR) for a Trouble-Free Install
• Adapter pipes (P/N 71223024HKR) will adapt these manifolds to any of the Hooker BlackHeart exhaust systems for this application

Details:

• Bolt size: M8 x 1.25 x 25mm
• CARB (California) Compliant: No
• Collector Diameter: 2.50 inch
• Emission Code: 8
• Engine: GM Gen III/IV (LS)
• Exhaust Manifold Style: Standard Swap
• Exhaust Series: Hooker
• Finish: Natural
• Header Style: Manifold
• Material: Cast Iron
• Mounting Hardware Included: Yes
• Primary Tube Dia.: 1-3/4 inch
• Product Type: Manifold
• Tube Material: Cast Iron
• Type of Component: Manifold
• Warning: California Proposition 65
• Warranty: Manufacturer's Limited Lifetime Warranty