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Hooker BlackHeart Long Tube Headers

1979-1993 Mustang LS Swap 304SS 1-3/4 X 3" Long Tube Headers

PART# 70101351-RHKR

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Hooker BlackHeart has quickly become the leader in engine swaps and we are excited to announce new products for 79-93 Fox Body Mustangs with GM LS engines. The new 304 stainless steel long-tube headers provide excellent ground clearance as well as component clearance. These headers are designed to work specifically with Hooker BlackHeart Transmission Crossmembers and Engine Mounts for a trouble free install.


  • Constructed from lightweight, 18-gauge, mandrel bent, stainless steel, maximizing strength and durability
  • 1-3/4” primary tubes and long transition 3” collectors with merge spears for maximum flow and increased exhaust velocity
  • 3/8” thick, CNC waterjet header flanges are used for strength and maximum sealing surface
  • Compatible with stock or multiple validated aftermarket engine K-members
  • Compatible with the stock steering shaft/rag joint coupler (stock K-member only) and aftermarket steering shafts
  • Designed to work specifically with Hooker Transmission Crossmembers and Engine Mounts for a trouble free install
  • 100% quality hand-welded construction for strength, longevity and good looks
  • Tube geometry designed for maximum clearance and hassle-free installation
  • All hardware included
  • Manufacturer’s limited lifetime warranty


BrandHooker BlackHeart
Collector Diameter3.00 inch
Emission Code4
EngineGM Small Block Gen III/IV (LS Based)
Header FinishNatural
Header StyleLong Tube
K-Member CompatibilityAJE (MU40UM)
Maximum Motorsports (MMKM-1)
Stock 1985-1993
Material304 Stainless Steel
Primary Tube Dia.1-3/4 inch
Product TypeHeaders
Part Number70101351-RHKR



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Tech Resources

Compatible with Engine Brackets P/N's 71221013HKR, 71221020HKR, 71221021HKR, 71221022HKR, and 71221023HKR. Compatible with Transmission Crossmembers P/N's 71222015HKR and 71222016HKR


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