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Hooker BlackHeart

Hooker BlackHeart LS SWAP Exhaust Adapter Kit

1973-1974 C10, connects Hooker 8501HKR manifolds to Hooker 2.5" Exhaust Kits

Part # 70701403-RHKR Be the first to write a review
Estimated shipping date: 04/22/2022
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When connecting Hooker Cast Manifolds to a 2.5" diameter Hooker exhaust kit, an adapter pipe is required to fill that gap between the end of the manifolds and our Hooker exhaust systems.


  • Designed to connect 8501HKR exhaust manifolds to C10 LS Swap 2.5" exhaust systems
  • 409 Stainless steel construction

About Hooker BlackHeart

The BlackHeart team utilizes the latest technology and materials to design exhaust systems, engine swap kits, and mufflers for both import and domestic cars and trucks. Hooker Blackheart is platform-engineered to provide superb performance, aesthetics, and fitment.

Application1973-1974 GM C10/15 2WD pickup
1973-1974 GM C10/20 2WD pickup
Brand Hooker BlackHeart
Choose Your PartAdapter Kit
Emission Code4
Material409 Stainless Steel
Product TypeAdapter Kit
Tubing Diameter (in)2.5
Part Number70701403-RHKR

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

When connecting mid length headers and cast iron manifolds to our full exhaust kits, an adapter pipe is required to fill that gap between the end of the headers or manifolds and our Hooker exhaust systems (which are designed to work with long tube header systems). Hooker has created a full line of adapter tubes that fill the gap and include all hardware and gaskets for a clean and simple connection.

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    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.