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 HP & +7 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