SKU: 57-1521 | UPC: 024844100542
K&N 91-95 Jeep Wrangler L6-4.0L Performance Intake Kit
The K&N 57-1521 Performance Air Intake System delivers more airflow to the 4.0L engine in 1991-1995 Jeep Wrangler YJ models. This kit replaces the factory air filter and intake tube with a roto-molded HDPE tube and oversized oiled cotton filter for guaranteed horsepower and torque gains up to 8.69 HP at 5200 RPM. A custom heat shield blocks engine bay heat while allowing easy installation in under 60 minutes using basic hand tools.
Key Features
- Roto-molded HDPE intake tube: Increases airflow volume to the engine for better throttle response and power delivery
- High-Flow oiled cotton air filter: Washable and reusable design cleans every 100000 miles under highway conditions with exceptional filtration
- Custom heat shield: Isolates intake air from underhood heat to maintain cooler denser air charge
- Guaranteed power increase: Dyno-tested gains of 8.69 HP at 5200 RPM and matching torque improvement
- Easy bolt-on design: Direct replacement completes in 60 minutes or less without cutting or permanent modifications
Product Notes
- Will not void vehicle warranty
- Cleaning required only every 100000 miles under normal highway driving
- Ships at 7.3 lbs in protective packaging
Installation Notes
- Professional installation recommended.
- Uses simple hand tools and completes in 60 minutes or less
- Directly replaces OEM air filter and intake tube with no additional hardware needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1991-1993 | Jeep | Wrangler | Base |
| 1991-1992 | Jeep | Wrangler | Islander |
| 1991-1994 | Jeep | Wrangler | Renegade |
| 1991-1995 | Jeep | Wrangler | Sahara |
| 1994-1995 | Jeep | Wrangler | SE |
| 1991-1992 | Jeep | Wrangler | Laredo |
| 1991-1993 | Jeep | Wrangler | S |
Why Choose K&N?
- Over 60 years designing air intake systems for street and off-road use
- High-density materials built for long-term durability and repeated cleanings
- Engineered and dyno-tested on actual vehicles for real-world power gains
Frequently Asked Questions
- Q: Will the 57-1521 fit my 1993 Jeep Wrangler 4.0L Base model?
A: Yes it fits all 1991-1995 Jeep Wrangler YJ models with L6-4.0L engine including Base, Islander, Laredo, Renegade, S, Sahara and SE submodels - Q: What materials are used in the intake tube and filter?
A: High-density polyethylene HDPE roto-molded tube paired with washable oiled cotton filter media for maximum airflow and protection - Q: What warranty covers this intake system?
A: Backed by K&N No-Hassle Lifetime Limited Warranty covering defects in materials or workmanship
Shipping &. Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Box dimensions 23.25 in x 14.5 in x 9.5 in
- Weight: 7.3 lbs
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