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SKU: RU-5111 | UPC: 024844104885
K&N RU-5111 Universal Clamp-On Air Filter 3" Flange 4-1/2" Base 3-1/2" Top 5-3/4" Height
The K&N RU-5111 universal clamp-on air filter fits racing vehicles radio-controlled cars generators snowmobiles tractors and more with its flexible 3-inch rubber flange that stretches up to 1/16 inch. This tapered round filter measures 4-1/2 inch base inside diameter 3-1/2 inch top inside diameter and 5-3/4 inch height for secure vibration-absorbing attachment on angled or offset intakes. It provides high airflow for more horsepower acceleration and engine performance while trapping contaminants.
Key Features
- Four Layers of Protection: Multiple layers of premium cotton gauze with tacking agent form intricate media to block trap dirt dust and harmful particles
- Clean Once Every 5 Years: Washable filter needs service 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 quick cost-effective gains no tools needed beyond clamp
- Engineered Power: High-flow media increases airflow horsepower and acceleration across RPM range
- Rugged Construction: Molded pliable rubber flanges and premium materials built to last lifetime absorbing vibration
Product Notes
- Washable and reusable reduces landfill waste from disposable filters
- Flange stretches 1/16 inch (1.5 mm) to fit in-between sizes
- Product weight 1.5 lb (0.7 kg) flange length 0.875 in (22 mm)
Installation Notes
- Professional installation recommended.
- Clamp onto 3 in (76 mm) inside diameter air intake tube
- Centered rubber flange no hardware modifications required
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Various | Racing Vehicles | 3" Intake Flange |
| Universal | Various | Generators Snowmobiles | 3" Intake Flange |
| Universal | Various | Tractors RC Cars | 3" Intake Flange |
Why Choose K&N?
- Proven leader in high-performance air filtration for motorsports and powersports
- Reusable design cuts replacement costs over time
- State-of-the-art engineering for reliable airflow in demanding conditions
Frequently Asked Questions
-
Q: Will the RU-5111 fit my intake setup?
A: Designed for 3 in flange diameter fits tapered applications with 4.5 in base 3.5 in top 5.75 in height verify your intake matches -
Q: What materials are used in this filter?
A: Premium cotton gauze filter media with ultra-strong molded rubber flanges for flexibility and durability -
Q: What warranty coverage applies?
A: Backed by 1-Year Limited Warranty covers defects in materials workmanship
Shipping & Handling
- Method: Standard Ground
- Availability: In stock - ships same or next business day
- Packaging: Box 8.25 in x 8.13 in x 7.5 in
- Weight: 1.5 lb
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