Hooker BlackHeart Transmission Crossmember

1982-2004 GM S-10 / Sonoma 2WD LS Swap, 4L80E Transmission Crossmember

Part # 71222020HKR Be the first to write a review
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Vehicle emissions regulations are not applicable to this item.

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Hooker continues to set the standard of performance with the Blackheart line of engine swap system components. We are proud to offer these three engine swap transmission crossmembers for 1982-2004 GM S10/Sonoma 2WD trucks. Each are designed specifically for use with Hooker Blackheart engine mounting brackets to simplify your LS swap. 71222018HKR Crossmember: Facilitates installation of a GM 700R4, TH350, and Powerglide transmissions 71222019HKR Crossmember: Facilitates installation of a GM T56, 4L60E, 4L70E, 4L75E, TH400 Transmissions 71222020HKR Crossmember: Facilitates installation of a GM 4L80E Transmission


  • Designed for use with all Hooker Blackheart S10 LS swap parts
  • Bolt in Crossmember for use with Hooker Blackheart S10 LS swap mounts 71221029HKR
  • Designed using CAD modeling/FEA analysis for optimal fitment, strength, weight, safety and appearance
  • Welded steel construction
  • Provides an optimum engine/transmission inclination angle that is critical to obtaining suitableU-joint working angles, when installed with Hooker 71221029HKR engine mounts
  • Designed in conjunction with other Hooker Blackheart S10 engine swap parts to provide bolt-in installation of Hooker LS swap manifolds, headers and exhaust systems for this application
  • Provides the highest clearance available for up to 3" exhaust system routing

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.

Application82-04 GM S10/Sonoma 2WD LS Swap
Brand Hooker BlackHeart
Choose Your PartCrossmember
Emission Code6
FinishBlack Powdercoated
Motor TypeGM LS
Product TypeTransmission Crossmember
Transmission Type4L80E
Part Number71222020HKR

Vehicle emissions regulations are not applicable to this item.

    Your Review

    *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.