Hooker BlackHeart Shorty Header

91-99 Jeep Wrangler YJ/TJ L6, 4.0L 1-1/2 Stainless Steel Shorty Header - Natural Finish

PART# 70305403-RHKR

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$483.95   Suggested Retail
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Estimated shipping date: 02/14/2020
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Hooker continues to push the boundaries of performance with the BlackHeart line of exhaust products. We are proud to offer this shorty header for 1991-99 Jeep Wrangler YJ/TJ vehicles. This header is engineered to offer both premium fitment and maximum performance from your 4.0L L6 engine.


  • Max dyno gains of +4.22 HP & +7.04 LB.FT torque
  • 1-1/2” diameter tuned length primary tubes feature smooth transition, 6-2-1 design for increased exhaust flow, improved throttle response and a broad torque curve
  • Utilizes true mitered merge collectors designed to maximize exhaust velocity and scavenging for optimum performance
  • Constructed from heavy duty 14-gauge, stainless steel for increased strength and durability
  • Uses 1/2" thick head flange for durability and an optimum sealing surface
  • Retains factory O2 sensors and catalytic converters
  • 100% bolt-on with NO cutting necessary for a hassle-free installation
  • Quality welds for strength, longevity and good looks
  • Premium header gasket included
  • Manufacturer's limited lifetime warranty


Application1991-1999 Jeep Wrangler YJ/TJ 4.0L
BrandHooker BlackHeart
Emission Code4
Exhaust SeriesHooker BlackHeart
Header FinishNatural
Header StyleShorty
Primary Tube Dia.1-1/2 inch
Product TypeHeaders
Tube Material304SS
Part Number70305403-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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