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SKU: RU-1039 | UPC: 024844386205
K&N RU-1039 Universal Clamp-On Air Filter 3in Flange ID x 5in Base OD x 3.5in Top OD x 6in Height
K&N RU-1039 delivers a clamp-on universal air filter for racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and custom intakes. This tapered round filter with 3 inch flange inside diameter fits angled or offset pipes up to 1/16 inch stretch. It provides high airflow for more horsepower and acceleration while maintaining excellent filtration.
Key Features
- Clamp-On Design: Secure attachment to 3 inch ID flanges with 0.75 inch flange length, centered for easy install on custom intakes
- Washable and Reusable: Oiled cotton gauze media cleans easily, lasts for years with proper maintenance
- Power Gains: Increases horsepower and acceleration through superior airflow over stock filters
- High Flow Filtration: Captures dirt and debris while allowing maximum air volume for performance
- Malleable Flanges: Molded rubber absorbs vibration, stretches slightly for perfect fit
Product Notes
- Measure intake pipe to confirm 3 inch ID compatibility before ordering
- Clean every 50,000 miles or sooner in dusty conditions using K&N kit
- Product weight 1.3 pounds, ships in compact package
Installation Notes
- Professional installation recommended.
- Slide over 3 inch clean intake tube and secure with hose clamp (sold separately)
- Oil filter after cleaning per K&N instructions for peak performance
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| All Years | Universal | Racing Vehicles | Custom Intakes |
| All Years | Universal | Generators | All |
| All Years | Universal | Snowmobiles | All |
| All Years | Universal | Tractors | All |
| All Years | Universal | Radio-Controlled | Cars |
Why Choose K&N?
- Proven leader in performance filtration since 1969
- High-quality cotton gauze media for repeated use
- Precision-engineered rubber flanges for vibration resistance
Frequently Asked Questions
-
Q: Will this fit my custom intake setup?
A: Yes, 3 inch flange ID with tapered shape suits most angled or offset 3 inch pipes, flanges stretch up to 1/16 inch -
Q: What material is used in the filter?
A: Four-ply oiled cotton gauze pleats in a round tapered shape with molded rubber flanges -
Q: What warranty coverage applies?
A: One year limited warranty against defects in materials or workmanship
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Retail box 7.4 x 6.9 x 6.6 inches
- Weight: 1.3 pounds
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