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SKU: RU-4450 | UPC: 024844080431
K&N Filter 2 3/4 inch Flange 5 7/8 inch OD Base 4 3/4 Top 5 inch Height
K&N RU-4450 is a universal clamp-on air filter built for racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and custom intakes with 2.75 inch flange. This round tapered filter features a 5.875 inch base OD, 4.75 inch top OD, and 5 inch height for precise fit on angled or offset intakes. It delivers increased airflow for more horsepower and acceleration while trapping contaminants with four layers of cotton gauze.
Key Features
- Four Layers of Protection: Premium cotton gauze with tacking agent forms a mesh that blocks dirt and debris for long engine life
- Low Maintenance: Wash and reuse, clean only every 75,000 miles or 5 years under highway driving
- Easy Installation: Pre-oiled and clamped on in minutes for instant performance gains without tools
- Increased Power: High-flow media raises horsepower, acceleration, and throttle response
- Durable Build: Flexible rubber flanges stretch up to 1/16 inch, absorb vibration, last a lifetime
Product Notes
- Pre-oiled and ready to install, washable with K&N cleaning kit for repeated use
- Stretches to fit in-between flange sizes, secure clamp-on attachment
- Ships in protective box, weighs 1 pound
Installation Notes
- Professional installation recommended.
- Clamp directly to 2.75 inch intake tube, no cutting or modification needed
- Compatible with rubber couplers and aluminum tubing for custom setups
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Universal | Racing Vehicles/Generators/Snowmobiles/Tractors | Custom Intakes 2.75" Flange |
| Universal | Universal | Radio-Controlled Cars/ATVs | Off-Road Equipment |
Why Choose K&N?
- Over 60 years developing high-flow filtration for motorsports and street
- Proven cotton gauze media used by millions of vehicles worldwide
- Engineered in the USA for exact flange fit and vibration resistance
Frequently Asked Questions
-
Q: What intake sizes does the RU-4450 fit?
A: Designed for 2.75 inch inside diameter flanges, stretches 1/16 inch, works on straight, angled, or offset custom air intakes -
Q: What material is used in this filter?
A: Four layers of oiled cotton gauze pleats with chrome wire backing, flexible rubber top and molded flange -
Q: What is the warranty coverage?
A: 1,000,000 Mile Limited Warranty when used and maintained as directed
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Box dimensions 7 x 7 x 7 inches
- Weight: 1 pound
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