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Hooker BlackHeart Transmission Spacer

LS Engine Swap Transmission Mount Spacer for 4L60-4L70 or TKO Transmissions

PART# 71223012HKR

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$34.28   Suggested Retail
$30.85   Holleydays Price
Estimated shipping date: 11/30/2020
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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 4L60-4L70 or Tremec TKO 500/600 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 Industries™ 2268 (rubber) or Prothane™ 7-1604 (poly) transmission mounts
  • Includes attaching hardware


Application94-98 Mustang LS Swap
BrandHooker BlackHeart
Emission Code5
Product TypeTransmission Mount
Transmission Type4L60-4L70 & TKO
Type of ComponentSpacer
Part Number71223012HKR



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.

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         X  Holleydays 2020 20% off and DD
         X  Holleydays 2020 20% off and DD