JBA Shorty Header

1997–2006 Jeep Wrangler 4.0L

Part #: 1526S

Overview

The JBA Shorty Header is a premium performance upgrade designed specifically for the 1997 to 2006 Jeep Wrangler equipped with the 4.0L engine. This header replaces the restrictive factory exhaust manifolds, significantly improving exhaust flow to enhance engine efficiency and power output. Ideal for Jeep enthusiasts seeking a reliable and durable solution, the JBA Shorty Header delivers noticeable gains in horsepower and torque while maintaining compatibility with factory emission systems.

Built to withstand the rigors of daily driving, towing, and off-road adventures, this header is a smart investment for those looking to maximize their Jeep’s performance without sacrificing reliability or emissions compliance.

Key Features

The JBA Shorty Header incorporates advanced design elements and quality materials to ensure superior performance and longevity. Key features include:

• Mandrel-bent stainless steel tubing for smooth exhaust flow and increased durability
• Proprietary JBA Firecone collector technology, proven to optimize power and torque delivery
• Factory-style emission connections for seamless integration with existing systems
• Extra thick collector domes to enhance strength and reduce cracking
• 3/8" thick machined flanges with oversized exhaust ports for improved sealing and flow
• Raw finish that allows for custom coating or heat wrapping if desired
• Designed specifically to fit the Jeep Wrangler 4.0L engine from 1997 to 2006
• Includes high-quality hardware for a professional, leak-free installation

Construction & Design

Crafted from premium stainless steel, the JBA Shorty Header is engineered to endure the harsh conditions of off-road use and high-performance driving. The mandrel-bent tubing maintains consistent diameter throughout bends, minimizing flow restrictions and turbulence. The thick machined flanges ensure a precise fit and long-lasting seal against the cylinder head, preventing exhaust leaks.

The innovative Firecone collector design utilizes race-proven technology to maximize scavenging effects, which translates into improved torque and horsepower across the RPM range. The raw finish provides a versatile base for additional coatings or heat treatments, allowing users to customize their header’s appearance and thermal management.

Performance & Sound

By replacing the restrictive factory manifolds, the JBA Shorty Header significantly reduces backpressure, allowing exhaust gases to exit more freely. This results in improved engine breathing, which enhances throttle response, increases power output, and can improve fuel efficiency. The Firecone collector design also contributes to a more aggressive exhaust note, giving your Jeep a deeper and more performance-oriented sound without excessive drone.

Installation & Fitment

The JBA Shorty Header is designed for a direct bolt-on installation on 1997–2006 Jeep Wrangler models with the 4.0L engine. It retains factory-style emission connections, ensuring compliance with emission regulations and simplifying installation. The kit includes all necessary hardware, and no major modifications are required, making it suitable for both professional installers and experienced DIY enthusiasts.

What's Included

• JBA Shorty Header (Raw Finish)
• Factory-style emission connection fittings
• High-quality mounting hardware
• Installation instructions

Ideal For

This JBA Shorty Header is perfect for Jeep Wrangler owners who want to enhance their vehicle’s performance and sound without compromising reliability or emissions compliance. It is especially suited for those who use their Jeep for daily driving, towing, or off-road adventures and desire a durable, long-lasting upgrade that delivers measurable power gains.

JBA Performance Exhaust is known for performance headers and exhaust systems for cars and trucks, including street and race-oriented configurations. Their lineup is built to improve exhaust flow and deliver a stronger performance sound, with many applications geared toward enthusiast builds that want power gains without sacrificing fitment.