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SKU: RU-2790 | UPC: 024844010766
K&N RU-2790 Universal Clamp-On Air Filter 3 1/2in Flange 4 5/8in Base 3 1/2in Top 4 1/2in Height
K&N RU-2790 delivers high-flow filtration for racing vehicles radio-controlled cars generators snowmobiles tractors and custom intakes with 3.5 inch clamp. This round tapered design with pliable rubber flanges stretches up to 1/16 inch for secure vibration-absorbing fit. Pre-oiled cotton gauze media traps dirt while increasing airflow for more horsepower and quicker throttle response.
Key Features
- 4 Layers of Protection: Premium cotton gauze with tacking agent forms mesh to trap contaminants and protect engines in dusty harsh conditions
- Clean Every 5 Years: Washable filter lasts 75000 miles or 5 years under highway driving reducing maintenance costs
- Easy Installation: Pre-oiled and ready to clamp on for immediate performance gains with no modifications needed
- Engineered Power: High-flow media boosts horsepower acceleration and engine response across RPM range
- Rugged Construction: Durable materials and molded rubber flanges built to withstand vibration and last a lifetime
Product Notes
- Flanges stretch up to 1.5mm to fit in-between sizes on angled or offset intakes
- Wash with K&N cleaner and re-oil every 75000 miles for peak performance
- Package dimensions 5.2 x 4.4 x 4.4 inches ships in protective box
Installation Notes
- Professional installation recommended.
- Clamp directly to 3.5 inch intake tube using hose clamp included or provided
- Compatible with rubber or metal tubes verify flange diameter before install
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| All Years | Various | Racing Vehicles | Custom Intakes |
| All Years | Various | Generators | Tractors |
| All Years | Various | Snowmobiles | ATVs/UTVs |
| All Years | Various | RC Cars | Dirt Bikes |
Why Choose K&N?
- Proven leader in high-performance air filtration since 1969
- Washable reusable design cuts replacement costs long-term
- Precision-engineered for maximum airflow and engine protection
Frequently Asked Questions
-
Q: Will RU-2790 fit my custom intake setup?
A: Fits any 3.5 inch inside diameter flange regardless of angle or offset stretches slightly for perfect seal -
Q: What material is the filter media?
A: Multiple layers of oiled cotton gauze with proprietary tacking for superior dirt-holding capacity -
Q: What is the warranty and cleaning process?
A: 1-Year Limited Warranty clean with K&N kit every 75000 miles re-oil with 1.17 oz provided
Shipping & Handling
- Method: Ground shipping via UPS or FedEx
- Availability: In stock - ships same or next business day
- Packaging: 5.2 x 4.4 x 4.4 inches protective box
- Weight: 0.9 lb
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