Gibson GP400S-C Ceramic Coated Header for 91-99 Jeep Wrangler YJ, TJ & (Grand) Cherokee XJ, ZJ, WJ with 4.0L I-6 Gasoline Engine
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Performance Header Upgrade: Replaces restrictive factory exhaust manifolds with a tuned tubular header designed to improve exhaust flow and engine efficiency.
Legendary 4.0L Jeep Fitment: Engineered for 1991–1999 Jeep Wrangler YJ and TJ, Cherokee XJ, Grand Cherokee ZJ, and Grand Cherokee WJ models equipped with the 4.0L inline-six gasoline engine.
High-Temperature Ceramic Coating: Ceramic-coated finish helps reduce underhood temperatures while providing enhanced corrosion resistance and long-term durability.
Improved Exhaust Scavenging: Tuned primary tubes help reduce backpressure and promote smoother exhaust flow for increased horsepower, torque, and throttle response.
Heavy-Duty Construction: Built from premium materials to withstand extreme exhaust temperatures and demanding driving conditions.
CARB Notice
- 50 State Legal - CARB E.O. Number D-411-8
Enhance the performance and reliability of Jeep's iconic inline-six engine with the Gibson Ceramic Coated Header. Designed specifically for 1991–1999 Jeep Wrangler YJ and TJ, Cherokee XJ, Grand Cherokee ZJ, and Grand Cherokee WJ models equipped with the 4.0L gasoline engine, this performance header replaces the restrictive factory exhaust manifold with a high-flow tubular design engineered to improve exhaust efficiency and engine breathing.
Featuring a durable high-temperature ceramic coating, the GP400S-C helps reduce radiant heat under the hood while providing exceptional protection against corrosion and environmental wear. Its tuned runner design promotes improved exhaust scavenging and reduced backpressure, helping support gains in horsepower, torque, and throttle response throughout the RPM range. Constructed to withstand years of exposure to extreme heat and harsh operating conditions, this header also serves as a durable replacement for aging or cracked factory manifolds. Whether you're restoring lost performance or upgrading for improved engine efficiency, the Gibson Ceramic Coated Header delivers the quality craftsmanship and proven engineering Jeep enthusiasts trust.
- Features: Ceramic Coated
- Color: Silver
- Motor: 6cyl 4.0L
- Material: 409 Stainless Steel
- Shipping Weight: 15lb
Jeep Cherokee (XJ)
- 1999 Jeep Cherokee (XJ)
- 1998 Jeep Cherokee (XJ)
- 1997 Jeep Cherokee (XJ)
- 1996 Jeep Cherokee (XJ)
- 1995 Jeep Cherokee (XJ)
- 1994 Jeep Cherokee (XJ)
- 1993 Jeep Cherokee (XJ)
- 1992 Jeep Cherokee (XJ)
- 1991 Jeep Cherokee (XJ)
Jeep Grand Cherokee (WJ)
- 1999 Jeep Grand Cherokee (WJ)
Jeep Grand Cherokee (ZJ)
- 1998 Jeep Grand Cherokee (ZJ)
- 1997 Jeep Grand Cherokee (ZJ)
- 1996 Jeep Grand Cherokee (ZJ)
- 1995 Jeep Grand Cherokee (ZJ)
- 1994 Jeep Grand Cherokee (ZJ)
- 1993 Jeep Grand Cherokee (ZJ)
Jeep Wrangler (TJ)
- 1999 Jeep Wrangler (TJ)
- 1998 Jeep Wrangler (TJ)
- 1997 Jeep Wrangler (TJ)
Jeep Wrangler (YJ)
- 1995 Jeep Wrangler (YJ)
- 1994 Jeep Wrangler (YJ)
- 1993 Jeep Wrangler (YJ)
- 1992 Jeep Wrangler (YJ)
- 1991 Jeep Wrangler (YJ)
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