Hooker BlackHeart Engine Mount Brackets

1979-93 Mustang LS-Swap, w/ AJE (MU40UM) K-member, 1/2" Drop

PART# 71221023HKR

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Hooker Blackheart has quickly become the leader in engine swaps and we are excited to announce new products for 1979-95 Fox Body/SN95 Mustangs. The Hooker Blackheart 71221023HKR LS engine mounting brackets are designed for use with the AJE MU-40UM K-member and Hooker 71222015HKR (1983-93 only) and 71222016HKR transmission crossmembers on 1979-93 Mustangs only. This parts combination locates the engine in the stock offset position with a 1/2" drop to provide increased underhood component clearance. This engine position is fully compatible with the Hooker Blackheart LS swap headers and exhaust systems co-developed for this application.


  • Designed specifically for use with the AJE MU-40UM K-member
  • Bolt-in compatible with Hooker Blackheart Mustang LS swap 70101350-RHKR and 70101351-RHKR headers
  • Requires the use of an aftermarket extended length steering shaft
  • Compatible with all Holley and Weiand LS swap oil pans


Application79-95 Mustang LS Swap
BrandHooker BlackHeart
Emission Code5
FinishBlack Powdercoated
K-Member CompatibilityAJE (MU40UM)
Product TypeEngine Mounts
Type of ComponentEngine Mount Bracket
Part Number71221023HKR



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

Designed for use with AJE (MU40UM) K-member, provides stock SB Ford nominal crankshaft offset with 1/2" drop in crank centerline height


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

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