GIBSON HEADER 91-99 4.0L CERAMIC
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.
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.
| Manufacturers Part Number | GP400S-C |
|---|---|
| Product Name | GIBSON HEADER 91-99 4.0L CERAMIC |
| Dropdown Value 1 | GIBSON HEADER 91-99 4.0L CERAMIC |
| CARB E.O. Number | D-411-8 |
| CARB Certification | 50 State Legal (Requires E.O. number) |
| Length | 0 |
| Width | 0 |
| Depth | 0 |
| Weight | 15.000000 |
| Hazmat | No |
| Brand | Gibson |
| Color | Silver |
| Engine | 6cyl 4.0L |
| Features | Ceramic Coated |
| Material | 409 Stainless Steel |
| Item Returns | This item can be returned |
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