SKU: 48-46201 | UPC: 802959480021
aFe Power Twisted Steel 409 Stainless Steel Header Jeep Wrangler YJ/TJ Cherokee Comanche Grand Cherokee 91-99 4.0L I6
This aFe Power Twisted Steel header upgrades exhaust performance on Jeep 4.0L inline-six engines in Wrangler YJ/TJ Cherokee Comanche and Grand Cherokee models from 1991 to 1999. Pulse control technology with optimized tube lengths and mitered collectors improves flow velocity and power delivery across the RPM range. Crafted from durable 14-gauge 409 stainless steel with thick 1/2-inch head flanges it installs as a direct bolt-on replacement with no modifications.
Key Features
- 409 Stainless Steel Construction: 14-gauge tubing resists corrosion and heat for long-lasting strength and performance
- Pulse Control Technology: Precisely engineered primary tube lengths tune exhaust pulses for peak torque and horsepower
- CNC Mandrel Bends: Smooth uninterrupted bends maintain exhaust velocity without restrictions
- TIG Welded: High-quality welds ensure leak-free operation and structural integrity
- Retains OE Emissions: Keeps all factory emissions components for compliance and easy installation
Product Notes
- Direct bolt-on design requires no cutting or fabrication
- 1.5-inch primary tubes and OEM collector size enhance scavenging
- Made in Corona California with limited lifetime warranty
Installation Notes
- Professional installation recommended.
- Bolts directly to factory exhaust and cylinder head ports
- Includes all necessary gaskets and hardware for complete fit
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1991-1999 | Jeep | Cherokee | Base Sport Classic Limited Laredo Country Briarwood |
| 1991-1992 | Jeep | Comanche | Base Pioneer Eliminator |
| 1993-1998 | Jeep | Grand Cherokee | Base Laredo Limited SE TSi Orvis |
| 1991-1995 | Jeep | Wrangler | Base Sahara Renegade Islander SE |
| 1997-1999 | Jeep | Wrangler | Sport |
Why Choose aFe Power?
- Engineered and manufactured in the USA for precise vehicle-specific fit
- Proven designs deliver measurable gains in power and throttle response
- Backed by rigorous testing and limited lifetime warranty
Frequently Asked Questions
- Q: Does this header fit 1991-1999 Jeep Wrangler YJ 4.0L?
A: Yes it provides direct bolt-on fit for all 1991-1995 YJ and 1997-1999 TJ Wrangler models with 4.0L I6 engine including Base Sahara Renegade and Sport trims - Q: What material is used in construction?
A: Built from 14-gauge 409 stainless steel tubing with 1/2-inch thick head flanges and TIG welds for heat and corrosion resistance - Q: What warranty coverage is provided?
A: Covered by aFe Power limited lifetime warranty against manufacturing defects when installed and used properly
Shipping & Handling
- Method: UPS or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed for protection during transit
- Weight: 20.25 lbs
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