Hooker BlackHeart Long Tube Headers

1994-2004 Mustang LS Swap 304SS 1-3/4 X 3" Long Tube Headers

PART# 70101346-RHKR

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Hooker has quickly become the leader in LS engine swaps and we are excited to announce new products for 94-04 Ford Mustangs with GM LS engines. The new 304 stainless steel long-tube headers provide excellent ground clearance as well as component clearance. Their 3" formed merge collectors with spears maximize flow potential, improving engine performance. These headers are designed to work specifically with Hooker Transmission Crossmembers (P/N 71222012HKR or 71222013HKR) and Engine Mounts (P/N 71221013HKR for 94-95 Cars or 71221011HKR for 96-98 Cars) for a trouble free install.


  • Compatible with the stock OE K-member or other aftermarket tubular K-members that replicate the stock engine offset
  • Designed to work specifically with Hooker Transmission Crossmembers (P/N 71222012HKR or 71222013HKR) and Engine Mounts (P/N 71221013HKR or 71221011HKR) for a trouble free install
  • Compatible with all GM automatic and TREMEC manual transmissions
  • Lightweight, 18-gauge, 304 stainless steel construction maximizing strength and durability
  • Available with 1-3/4” or 1-7/8” primaries to cover a wide range of horsepower levels
  • Long transition 3” diameter collectors feature merge spears for maximum flow and increased exhaust velocity
  • All hardware included
  • Quality welds for strength, longevity and good looks
  • Tube geometry designed for maximum clearance and hassle-free installation
  • Manufacturer’s limited lifetime warranty


BrandHooker BlackHeart
Collector Diameter3.00 inch
Emission Code4
EngineGM LS
Header FinishNatural
Header StyleLong Tube
Material304 Stainless Steel
Primary Tube Dia.1-3/4 inch
Product TypeHeaders
Part Number70101346-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

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