Hooker Blackheart 12650HKR LS Swap Transmission Mount Adapter Kit


PART# 12650HKR

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$36.71   Suggested Retail
$33.04   Your Price
Estimated shipping date: 10/22/2021
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This transmission mount adapter kit has been comprehensively designed for use with Hooker Blackheart transmission crossmembers used in specific LS engine swap applications. When used as instructed, this transmission mount adapter will provide engine/transmission inclination angles which are designed to provide optimized U-joint working angles and component clearances.


  • Facilitates installation of a GM TH400 or 2004R transmission in multiple LS swap vehicle applications using Hooker Blackheart engine mounting brackets/plates and transmission crossmembers
  • CAD modeled to provide optimal fitment and strength
  • Designed for use with multiple Hooker Blackheart engine swap transmission crossmembers
  • Provides powertrain inclination angles required to ensure compatibility with other Hooker Blackheart LS engine swap components
  • Designed for use with Anchor Industriesâ„¢ 2268 (rubber) or Prothaneâ„¢ 7-1604 (poly) transmission mounts
  • Includes attaching hardware

Product Attributes

BrandHooker Blackheart
Emission Code5
Manufacturer Part Number12650HKR
Product TypeTransmission Crossmembers
Part Number12650HKR



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

Using this adapter kit to install a GM 200R4 transmission into a GM 1st-gen F-body or 3rd-gen X-body vehicle with the Hooker Blackheart 12626HKR transmission crossmember requires user-executed modification/welding to be performed on the crossmember, as described in the installation instructions included with this adapter kit.

Use of this adapter kit with any other Hooker Blackheart transmission crossmember it is listed for use with requires no modifications to the crossmember.


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.