Exhaust Header Manifold for Jeep Wrangler (1987-1990) 4.2L Engine
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Unleash Raw Power: Performance Exhaust Header Manifold for Your 1987-1990 Jeep Wrangler 4.2L Engine
Who Is This For? Owners of the classic 1987-1990 Utility Vehicle with the venerable 4.2L L6 engine who demand improved exhaust flow, enhanced engine response, and a rugged, durable upgrade. Ideal for enthusiasts looking to restore power, improve efficiency, or customize their off-road legend.
Is Your Engine Choked? Is your classic 4.2L L6 engine feeling sluggish, delivering less-than-optimal power and responsiveness? Stock exhaust manifolds can restrict exhaust gas flow, hindering performance and potentially cracking under the stresses of heat cycles and off-road adventures, leading to irritating exhaust leaks and reduced efficiency.
The Engineering Solution: Elevate your engine's potential with this high-performance exhaust header manifold. Engineered specifically for the 1987-1990 4.2L L6 engine, this manifold features precision mandrel-bent tubing and a direct-bolt-on design, ensuring maximum exhaust flow and a seamless installation. Crafted from high-quality, polished stainless steel, it's built to withstand the elements and rigorous use, providing a robust and long-lasting solution to your performance needs. Experience a noticeable improvement in throttle response and a more aggressive exhaust note.
The Comparative Edge
- Direct bolt-on replacement for hassle-free installation, meaning less time in the garage and more time on the trail.
- Premium polished stainless steel construction ensures superior durability and corrosion resistance compared to fragile stock cast iron manifolds.
- CNC machined flanges guarantee a precise, leak-free seal, preventing power loss and ensuring optimal performance.
- TIG and MIG welded construction provides robust, long-lasting integrity, ready for the toughest conditions.
- Mandrel-bent tubing optimizes exhaust gas velocity, directly translating to improved horsepower and torque across the RPM range.
- Includes all necessary gaskets for a complete setup right out of the box, saving you time and extra trips to the parts store.
Technical Specifications
| Fitment | 1987-1990 Jeep Wrangler |
| Engine | 4.2L L6 |
| Inlet Diameter | 1.50" |
| Outlet Diameter | 2.00" OD |
| Part Number | N/A |
Compatibility
Fits:
- 1987 Jeep Wrangler 4.2L L6 Engine
- 1988 Jeep Wrangler 4.2L L6 Engine
- 1989 Jeep Wrangler 4.2L L6 Engine
- 1990 Jeep Wrangler 4.2L L6 Engine
Fitment
Fitment
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Warranty
Warranty
All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]

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$299.95