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
Specs
Application
1991-1999 Jeep Wrangler YJ/TJ 4.0L
Brand
Hooker BlackHeart
Emission Code
4
Exhaust Series
Hooker BlackHeart
Header Finish
Natural
Header Style
Shorty
Material
Stainless Steel
Primary Tube Dia.
1-1/2 inch
Product Type
Headers
Part Number
70305403-RHKR
Emissions
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