HOOKER BLACKHEART LS SWAP EXHAUST MANIFOLDS
1982-2004 GM S-10/Sonoma LS Swap Exhaust Manifolds, 2.50 inch Outlet - Natural Cast Finish
These Hooker BlackHeart cast iron exhaust manifolds are designed for 1982-2004 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.Features: Intended for 1982-2004 GM S10/Sonoma LS engine swap applications where durability, quiet operation, and leak-free sealing is desired. Nickel plated steel mating flanges, MLS mating flange gaskets, and mating flange hardware included Hooker BlackHeart 71223026HKR LS Exhaust Manifolds, 82-04 S-10 Sku # 42571223026HKR Mfr. Part # 71223026HKR Condition New Brand Hooker Headers Sold Kit Details HOOKER BLACKHEART LS SWAP EXHAUST MANIFOLDS
1982-2004 GM S-10/Sonoma LS Swap Exhaust Manifolds, 2.50 inch Outlet - Natural Cast Finish
These Hooker BlackHeart cast iron exhaust manifolds are designed for 1982-2004 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.
Features:
Intended for 1982-2004 GM S10/Sonoma LS engine swap applications where durability, quiet operation, and leak-free sealing is desiredNickel plated steel mating flanges, MLS mating flange gaskets, and mating flange hardware includedCast from Hi-Silicon-Moly Ductile Iron to provide durability and corrosion resistance2.5 inch outlet diameter offers improved flow for maximum performance from a cast iron exhaust manifoldDesigned to be used with Hooker BlackHeart Engine Mounts (P/N 71221029HKR) and Transmission Crossmembers (P/N 71222020HKR, 71222018HKR, or 71222019HKR) for a trouble free installAdapter pipes (P/N 71223024HKR) will adapt these manifolds to any of the Hooker BlackHeart exhaust systems for this application Specs Material Type Cast Iron Finish Natural Flange Style Round Port Collector Diameter 2-1/2 Inch Gasket(s) Included No MFG. Part # 71223026HKR Hardware Included Yes Sold in Quantity Pair GTIN Code 090127054956 Reviews Took care of my clearance problem Rated by Uncle Grumpy on July 27, 2026
Summary: If you're doing an ls swap in a S10 frame these are the only way to go. I tried 2 others and kept having problems with frame clearance issues and steering shaft clearance. These dropped right in place and all problems solved. That my word don't waste time and money on other so called ls /s10 swap exhaust.
Yes, I recommend this product.
I would buy again Rated by J on December 14, 2025
Summary: Perfect fit
Yes, I recommend this product.
Easy to bolt in Rated by Evenbiggerrays62 on May 22, 2024
Summary: Fell right into place
Yes, I recommend this product.
Work perfectly for a ls swap in 87 mazda b2200 Rated by B2200 swap on June 01, 2021
Summary: Worked out perfectly for my swap
Yes, I recommend this product.
Related Items / Suggested Parts ARP 134-1102 Gen III/LS Series Header Bolts, 3/8 Inch Flange Tech Support We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
