Gibson Performance Header

Fits 1991–1993 Jeep Cherokee with 4.0L Engine

Part #: GP400S

Overview

The Gibson 91-93 Jeep Cherokee Base 4.0L 1-1/2in 16 Gauge Performance Header is a high-quality exhaust component designed to enhance your vehicle’s breathing efficiency. Crafted specifically for Jeep Cherokee models from 1991 to 1993 equipped with the 4.0L engine, this performance header replaces the factory manifold to improve exhaust flow, resulting in better low and mid-range torque and horsepower. Its durable stainless steel construction ensures longevity and resistance to corrosion, making it an ideal upgrade for both street and off-road enthusiasts seeking increased performance and reliability. This header is engineered to optimize engine response and cooling, helping your vehicle operate more efficiently under demanding conditions. Whether you’re looking to boost power for daily driving or enhance your off-road adventures, this component provides a straightforward upgrade that supports your vehicle’s performance goals without compromising reliability.

Key Features

Designed with precision and durability in mind, the Gibson performance header features:

• Constructed from 16-gauge stainless steel for strength and corrosion resistance
• 1-1/2 inch diameter primary tubes for optimal exhaust flow
• Dyno-tuned to deliver increased low and mid-range horsepower and torque
• Direct replacement for factory manifolds, using the stock crossover pipe
• Well-suited for lowered, raised, street, and off-road vehicles
• Meets EPA and CARB requirements, ensuring legal use in all 50 states
• No welding required for installation, simplifying the upgrade process

Construction & Design

This performance header is meticulously engineered from high-grade stainless steel, featuring mandrel-bent primary tubes that promote smooth exhaust flow. The 16-gauge material provides a balance of strength and weight savings, while the precise manufacturing ensures a perfect fit and seal. Its durable coating resists rust and corrosion, maintaining performance and appearance over time.

Performance & Response

By improving exhaust scavenging and reducing backpressure, this header helps your engine breathe more freely, translating to noticeable gains in responsiveness and power delivery. The design supports cooler operating temperatures, which can contribute to increased engine longevity and consistent performance during extended use.

Installation & Fitment

This header is designed as a direct bolt-on replacement for the factory manifold, utilizing the stock crossover pipe. Installation is straightforward, with no welding required, making it accessible for DIY enthusiasts and professional installers alike.

What’s Included

The package includes the stainless steel performance header and all necessary hardware for installation, ensuring a complete upgrade experience.

Ideal For

Perfect for Jeep Cherokee owners looking to enhance engine performance, improve exhaust flow, and achieve a more aggressive sound. Suitable for street and off-road applications, this header is an excellent choice for those seeking durability and increased power from their 4.0L engine.