Hooker Blackheart 71222013HKR Transmission Crossmember

94-04 Mustang Engine Swap Transmission Crossmember* LS-T56/T56 Magnum, 2004R, TH400, 4L80E 4L85E Coyote - T56 Magnum

PART# 71222013HKR

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Hooker Blackheart has quickly become the leader in engine swap system design and Hooker is excited to announce new LS and Coyote engine swap products for 1994-2004 Ford Mustangs. This Hooker Blackheart engine swap transmission crossmember is designed to be used with Hooker Blackheart engine mount adapter plates or mounting brackets designed for vehicles that are equipped with stock OE (1996-2004 only) or specific AJE, Team Z or Maximum Motorsports aftermarket engine K-members.

Provides for LS swap installation of a 4th-gen F-body T56, or T56 Magnum transmission directly, or installation of a 2004R, TH400, 4L80E or 4L85E transmission by using the following adapters:
2004R or TH400 transmission - 12650HKR
4L80E or 4L85E transmission - 71223013HKR


  • Comprehensively designed as part of the Hooker Blackheart LS and Coyote engine swap systems for 1994-2004 Ford Mustangs; provides maximized level of inter-component compatibility
  • Provides for Coyote swap installation of a Ford spec T56 Magnum transmission directly
  • Designed for use with Hooker Blackheart 71221011HKR engine adapter plates in LS swaps using the stock 1996-2004 OE K-member
  • Designed for use with Hooker Blackheart engine mounting brackets in Coyote swaps using AJE MU-40-UM and Team Z TZM-KM-SWAP K-members
  • Designed for use with Prothaneâ„¢ 6-504 engine mounts in Coyote swaps using Maximum Motorsports MMKM-2/MMKM-2.1 K-members
  • High-arch passages provide maximum available exhaust ground clearance
  • Design geometry replicates stock Ford drivetrain height, inclination angle and offset for optimized vehicle and component compatibility
  • Powder coated steel construction provides an attractive, strong and stiff transmission mounting solution
  • Hardware included
  • Manufacturer’s limited lifetime warranty

Product Attributes

BrandHooker Blackheart
Emission Code5
Product TypeTransmission Crossmembers
Part Number71222013HKR



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

*All Transmissions covered, other than T56/T56 Magnum, require use of an adapter, as listed in the overview below


Product Reviews

    *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.