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SKU: RU-2990 | UPC: 024844038494
K&N RU-2990 Universal Clamp-On Air Filter 3 1/2 inch Flange 5 inch Base 3 1/2 inch Top 4 inch Height
K&N RU-2990 delivers high-flow filtration for racing vehicles radio-controlled cars generators snowmobiles tractors ATVs UTVs and custom intakes with 3.5 inch diameter. This round tapered clamp-on design with molded rubber flange stretches up to 1/16 inch for secure vibration-free fit. Pre-oiled cotton gauze media traps dirt while increasing airflow for more horsepower and acceleration.
Key Features
- 4 Layers of Protection: Premium cotton gauze with tacking agent forms intricate mesh to block contaminants and protect engines in dusty harsh conditions
- Clean Every 5 Years: Washable filter lasts 75000 miles under highway driving or 5 years at 15000 miles annually reducing maintenance costs
- Easy Clamp-On Installation: Pre-oiled and ready to install stretches to fit in-between sizes for quick performance upgrade on any compatible intake
- Increased Engine Power: State-of-the-art media design boosts airflow for higher horsepower acceleration and overall responsiveness
- Rugged Lifetime Build: Durable premium materials and construction withstand vibration abuse for lifelong reusability
Product Notes
- Flanges absorb vibration and seal securely on 3.5 inch intakes
- Wash with K&N cleaner oil and reinstall no special tools needed
- Product weight 1.4 pounds ships in 7.1 x 7.1 x 6.75 inch box
Installation Notes
- Professional installation recommended.
- Clamp over 3.5 inch intake pipe flange stretches 1/16 inch if needed
- Uses standard hose clamps compatible with rubber flange no drilling required
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| All Years | Universal | Racing Vehicles | Custom Intakes |
| All Years | Universal | Generators | N/A |
| All Years | Universal | Snowmobiles | N/A |
| All Years | Universal | Tractors ATVs UTVs | 3.5in Intake |
Why Choose K&N?
- Proven leader in high-performance filtration since 1969
- Washable reusable design cuts replacement costs long-term
- Engineered for maximum airflow without sacrificing filtration
Frequently Asked Questions
-
Q: Does RU-2990 fit my custom 3.5 inch intake setup?
A: Yes rubber flange clamps onto 3.5 inch pipes stretches slightly for perfect seal on racing ATVs generators or tractors -
Q: What material is used in the filter media?
A: Four layers of oiled cotton gauze provide deep trapping of dirt particles while allowing high airflow volume -
Q: What is the warranty and cleaning process?
A: 1-Year Limited Warranty covers defects clean every 75000 miles using K&N kit for like-new performance
Shipping & Handling
- Method: Ground shipping via UPS or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Protective cardboard box 7.1 x 7.1 x 6.75 inches
- Weight: 1.4 pounds
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