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SKU: RU-2590 | UPC: 024844032195
K&N RU-2590 Universal Clamp-On Air Filter 4in Flange 5-3/8in Base 4-3/8in Top 7in Height
K&N RU-2590 delivers high-flow filtration for racing vehicles radio-controlled cars generators snowmobiles tractors and more. Molded rubber flanges with 4in centered diameter stretch up to 1/16in for secure clamp-on fit regardless of intake angle or offset. Pre-oiled cotton gauze media traps dirt while increasing airflow for better horsepower and acceleration.
Key Features
- 4 Layers of Protection: Premium cotton gauze with tacking agent forms mesh to trap contaminants and protect engines in dusty conditions.
- Clean Every 5 Years: Washable design needs service only every 75000 miles or 5 years under normal highway driving at 15000 miles per year.
- Easy Installation: Pre-oiled and ready to clamp on for immediate performance gains with no cutting or modification required.
- Engineered Power: High-flow media boosts horsepower acceleration and throttle response across RPM range.
- Rugged Construction: Durable materials and vibration-absorbing flanges built to last a lifetime with proper cleaning.
Product Notes
- Flanges stretch 1/16in (1.5mm) to fit in-between sizes. verify intake diameter before purchase.
- Wash with K&N cleaner and re-oil for reuse. avoid petroleum-based products.
- Ships in protective box. 1.6 lb product weight 8.25 x 8.19 x 7.56 in dimensions.
Installation Notes
- Professional installation recommended.
- Clamp directly to 4in intake pipe. centered flange 1.313in long 1.25in from top.
- Compatible with rubber or metal clamps. no additional hardware needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Various | Racing Vehicles | All |
| Universal | Various | Generators | All |
| Universal | Various | Snowmobiles | All |
| Universal | Various | Tractors | All |
| Universal | Various | Radio-Controlled | Cars |
Why Choose K&N?
- Proven leader in high-performance air filtration since 1969.
- Washable reusable filters cut replacement costs and landfill waste.
- State-of-the-art media and construction for lifelong reliability.
Frequently Asked Questions
-
Q: What intake sizes does RU-2590 fit?
A: 4in flange with 5-3/8in base ID 4-3/8in top ID. stretches slightly for tapered conical applications. -
Q: What material is used in the filter media?
A: Multiple layers of oiled cotton gauze over wire mesh for high airflow and dirt-holding capacity. -
Q: What warranty covers this filter?
A: 1-Year Limited Warranty against defects in materials or workmanship.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Corrugated box 8.25in L x 8.19in W x 7.56in H
- Weight: 1.6 lb
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