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SKU: RU-4740 | UPC: 024844102119
K&N RU-4740 Universal Clamp-On Air Filter Round Tapered 4.5in Flange 5.875in Base 4.5in Top 6in Height
The K&N RU-4740 universal clamp-on air filter fits a wide range of equipment including racing vehicles radio-controlled cars generators snowmobiles and tractors. Its round tapered design features a 4.5 inch centered rubber flange 5.875 inch base inside diameter 4.5 inch top inside diameter 6 inch top outside diameter and 6 inch height for secure vibration-absorbing attachment. Pre-oiled cotton gauze media delivers more airflow for better horsepower and acceleration while trapping contaminants.
Key Features
- 4 Layers of Protection: Multiple layers of premium cotton gauze with tacking agent form intricate media to block harmful contaminants from reaching the engine.
- Clean Once Every 5 Years: Washable filter needs cleaning every 75000 miles under normal highway conditions based on 15000 miles per year average.
- Easy Installation: Pre-oiled and ready to clamp on for straightforward setup and fast performance gains without cutting or modifications.
- Engineered Power: Advanced filter media boosts horsepower acceleration and engine response across applications.
- Rugged Construction: Durable premium materials and molded rubber flanges built to last a lifetime while absorbing vibrations.
Product Notes
- Flanges stretch up to 1/16 inch to fit in-between sizes for flexible mounting.
- Washable and reusable design reduces replacement costs over time.
- Product weight 1.65 lbs shipping box 8.25 x 8.25 x 7.75 inches.
Installation Notes
- Professional installation recommended.
- Clamp-on centered flange secures to 4.5 inch intake diameter pipes.
- Stretches slightly for precise fit no additional hardware required.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Various | Racing Vehicles RC Cars Generators Snowmobiles Tractors | All |
Why Choose K&N?
- Decades of filtration expertise for motorsports and powersports.
- High-flow cotton gauze media proven in dyno tests.
- Precision-engineered rubber flanges for reliable seal and longevity.
Frequently Asked Questions
-
Q: What intake sizes does the K&N RU-4740 fit?
A: Centered 4.5 inch flange fits 4.5 inch diameter pipes base 5.875 inches top inside 4.5 inches stretches up to 1/16 inch for custom setups. -
Q: What material is used in this air filter?
A: Oiled cotton gauze media with molded rubber flanges for durability and high airflow in universal applications. -
Q: What is the warranty and cleaning process?
A: 1-Year Limited Warranty covers defects. Clean every 75000 miles using K&N cleaning kit oil and reinstall.
Shipping & Handling
- Method: Ground shipping
- Availability: In stock - ships same or next business day
- Packaging: Secure box 8.25 x 8.25 x 7.75 inches
- Weight: 1.65 lbs
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