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SKU: RU-1008 | UPC: 024844373595
K&N Universal Clamp-On Air Filter 4-1/2in FLG / 5-7/8in B / 4-1/2in T / 8-3/8in H
K&N RU-1008 is a round tapered universal clamp-on air filter built for racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and custom intakes. Its pliable rubber flange stretches up to 1/16 inch for secure fit on 4-1/2 inch diameters regardless of angle or offset. 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 a mesh that blocks contaminants for long engine life.
- Clean Every 5 Years: Washable design needs service only every 75,000 miles under highway conditions (5 years at 15,000 miles/year).
- Easy Installation: Pre-oiled and ready to clamp on for immediate performance gains with no cutting or modifications.
- Engineered Power: High-flow media raises horsepower, acceleration, and throttle response across RPM range.
- Rugged Construction: Durable materials and vibration-absorbing flanges built to last a lifetime.
Product Notes
- Flange stretches up to 1/16 inch (1.5mm) for in-between sizes.
- Wash and re-oil with K&N kit for repeated use.
- Product weight 1.6 lb (0.7 kg). ships in 8.25 x 8.19 x 4.81 inch box.
Installation Notes
- Professional installation recommended.
- Clamp directly to 4-1/2 inch intake tube. no adapters needed.
- Secure with hose clamp (not included) for vibration resistance.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Custom/Racing | Generators/Tractors/Snowmobiles | All |
| Universal | RC Vehicles | Off-Road Equipment | All |
Why Choose K&N?
- Over 50 years engineering high-flow air filters for motorsports and street.
- Lifetime washable design cuts replacement costs versus disposables.
- State-of-the-art media proven to add power in dyno tests.
Frequently Asked Questions
-
Q: What intake sizes does RU-1008 fit?
A: 4-1/2 inch flange inside diameter (114mm), base 5-7/8 inch OD (149mm), top 4-1/2 inch OD (114mm), height 8-3/8 inch (213mm). -
Q: Is the filter material washable?
A: Yes, four layers of oiled cotton gauze rinse clean and reuse indefinitely with K&N cleaning kit. -
Q: What warranty covers this filter?
A: 1-Year Limited Warranty against defects in materials or workmanship.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Secure box 8.25 x 8.19 x 4.81 inches
- Weight: 1.6 lb (0.7 kg)
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