Exhaust Headers Polished Stainless Steel for 1991-1999 Jeep Wrangler Cherokee Grand Cherokee YJ TJ XJ ZJ 4.0L

Regular price $159.99 USD
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SKU: AM-33003
AMVirtuo Polished Stainless Steel Exhaust Headers for 1991-1999 Jeep Wrangler Cherokee Grand Cherokee 4.0L Direct Bolt-On Replacement
$159.99 USD

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Key Features

Compatibility

These exhaust manifolds are designed for 1991-1999 Jeep Wrangler YJ/TJ, Cherokee XJ, and Grand Cherokee ZJ with the legendary 4.0L inline-six engine. Designed as a vehicle-specific replacement for factory exhaust manifolds.

Performance Gains

These Jeep Wrangler headers are designed to support improved exhaust flow and reduced backpressure by improving exhaust flow and reducing backpressure. The optimized design enhances throttle response for both street and off-road driving.

T304 Stainless Steel

Mandrel-bent shorty headers made from 304 stainless steel resist corrosion and high heat, delivering long-term durability for daily driving and off-road use. The polished finish looks great and provides additional protection.

Designed for vehicle-specific installation

CNC-machined flanges and factory-matching bolt locations ensure these Jeep Cherokee headers install without modifications. Designed to solve the common cracked manifold problem on Jeep 4.0L engines.

TIG Welded

Precision TIG-welded joints create gap-free seams that resist vibration and high temperatures, reducing the chance of cracks or leaks. Includes all necessary gaskets and hardware for installation.

Description

The AMC/Jeep 4.0L inline-six engine is legendary for its torque and reliability. Our 4.0L Jeep exhaust headers help unlock even more performance from this robust powerplant. Whether you're crawling trails in your Wrangler, exploring backroads in your Cherokee, or daily driving your Grand Cherokee, these headers deliver measurable improvements.

Factory exhaust manifolds on Jeep 4.0L engines are known to crack over time due to thermal stress. Our TJ headers replace those problematic cast iron manifolds with durable stainless steel construction that withstands the extreme conditions Jeep owners put their vehicles through.

The Jeep YJ exhaust headers feature optimized primary tube lengths and smooth internal transitions that improve mid-range torque - exactly what you need when navigating challenging terrain or merging onto highways. The polished stainless steel finish not only looks great but also provides excellent corrosion resistance.

At AMVirtuo, we believe performance upgrades shouldn't break the bank. These Jeep Grand Cherokee headers offer professional-grade quality at a price that respects your budget, backed by our commitment to helping Jeep enthusiasts get more from their vehicles.

Vehicle Fitment

Vehicle Years Engine
Jeep Wrangler YJ 1991-1995 4.0L I6
Jeep Wrangler TJ 1996-1999 4.0L I6
Jeep Cherokee XJ 1991-1999 4.0L I6
Jeep Grand Cherokee ZJ 1993-1999 4.0L I6

⚠️ Important Fitment Notes

Engine Compatibility: Designed for Jeep 4.0L inline-six (SOHC) engines only. Not compatible with 2.5L or 4-cylinder engines.

Cracked Manifold Solution: These stainless steel headers are designed to replace the problematic factory cast iron manifolds that commonly crack on Jeep 4.0L engines.

Verify local regulations before purchase.: T304 stainless steel construction resists corrosion from mud, water crossings, and road salt that off-road vehicles frequently encounter.

Technical Specifications

Specification Details
Header Type Shorty / Direct Replacement
Inlet Diameter 1.50"
Outlet Diameter 2.125"
Material T304 Stainless Steel
Surface Finish Polished
Welding Process TIG Welded
Flange Type CNC Machined
Gasket Included Yes

Headers vs Stock Exhaust Manifolds

If you're debating between upgrading to headers or replacing with factory-style manifolds, here's what you need to know:

Feature Stock Manifolds AMVirtuo Headers
Crack Resistance Prone to cracking Excellent (stainless steel)
Exhaust Flow Restrictive casting Optimized for performance
Power Gains Stock output Supports improved exhaust flow and throttle response; actual results vary
Corrosion Resistance Moderate Excellent
Weight Heavy cast iron Lighter

The Bottom Line: Factory cast iron manifolds on Jeep 4.0L engines are known to crack over time, leading to exhaust leaks and reduced performance. Upgrading to stainless steel headers improves exhaust flow, resolves the cracked manifold problem, and delivers long-lasting durability.

Installation Notes

Professional installation is recommended for optimal results. Here are important considerations for your Jeep 4.0 headers installation:

  • Direct Replacement: Minor adjustments may be needed depending on vehicle condition and setup. Uses factory mounting points and hardware locations.
  • Oxygen Sensor: Compatible with factory oxygen sensor locations.
  • Check Clearance: Verify clearance with aftermarket accessories.
  • Post-Installation Check: After installation, start the engine and listen for exhaust leaks.

Pro Tip: According to Jeep enthusiasts, replacing cracked manifolds with stainless steel headers is one of the best upgrades for 4.0L engines. The improved exhaust flow provides noticeable gains in throttle response and fuel economy. 

What's Included

  • 1x Exhaust Header Assembly
  • Mounting Gaskets
  • Installation Hardware

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