This BBK Performance shorty tuned Length exhaust Header is designed and constructed as direct fit replacement for all Jeep 4.0L applications. Each header is manufactured with 1-1/2" CNC mandrel bent tubing that offers unrestricted exhaust flow for increased horsepower and torque over factory OEM manifolds. BBK tuned Length headers offer improved scavenging waves for better combustion, which leads to improved performance and fuel economy over stock or equal Length headers. As with all BBK Performance exhaust headers they feature a 3/8" laser cut exhaust flange for additional strength and a guaranteed leak free fit. All headers are robotically and precision hand welded and then pressure tested to ensure years of reliability and performance in the real world. All BBK exhaust headers are available in a Titanium Ceramic or Polished silver ceramic coated finish. All Kits include new exhaust header gaskets and hardware to complete the installation. Fitment:1991-1999 Jeep Cherokee 4.0L 2WD/4WD - 1993-1999 Jeep Grand Cherokee 4.0L 2WD/4WD - 1991-1999 Jeep Wrangler 4.0L 2WD/4WD