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.

Features:
  • 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