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The K&N RU-5288 is a high-performance universal clamp-on air filter designed for racing vehicles, radio-controlled cars, generators, snowmobiles, tractors and custom intakes with 3in flanges. Its round tapered shape with 6in base OD, 4.625in top OD and 3in height delivers increased airflow for better horsepower and acceleration across diverse applications. Washable and reusable construction ensures long-term engine protection and performance gains.
Key Features
- Engineered Power: Advanced filter media increases horsepower, acceleration and engine responsiveness by optimizing air intake flow.
- Rugged Construction: Built with durable premium materials, molded rubber flanges absorb vibration and stretch up to 1/16in for secure fit on varied intakes.
- Flanges feature centered 3in inside diameter and 0.75in length for direct clamp-on mounting.
- Product weight 1.3lb. ships in box 7.13in x 7.13in x 4.25in.
- Clamp directly onto 3in ID air intake tube. rubber flange stretches slightly for precise fit.
- Decades of engineering high-flow filtration for motorsports and powersports.
Fitment
| Fitment Status | Universal or dimensional product |
|---|---|
| Required Verification | Exact dimensions, media, connection, mounting interface, and companion part number |
Specifications
| Brand | K&N Engineering |
|---|---|
| Manufacturer Part Number | RU-5288 |
| Product Type | Air Filters - Universal Fit |
| Fitment Type | Universal |
| Condition | New |
What's Included
One new K&N air filters - universal fit identified by manufacturer part number RU-5288. Hardware, adapters, clamps, hoses, filters, and service supplies are included only when stated for this exact product.
About K&N Engineering
K&N develops reusable air filtration, intake, oil filtration, fuel filtration, and related performance products for vehicle-specific and dimensional applications.
Related K&N Engineering Products
- Shop all K&N Engineering products
- K&N Universal Clamp-On Air Filter 3in Flange ID x 5in Base OD x 3.5in Top OD x 6in Height
- K&N Universal X-Stream Clamp-On Filter 6in Base OD x 5in Top OD x 6.5in Height x 3in Flange ID
- K&N Filter Universal Clamp-On Filter-Round Tapered 2.75in Flange ID x 6in Base OD x 5in Top OD
Frequently Asked Questions
How do I confirm K&N RU-5288 fits my setup?
Match every listed dimension, flange or thread size, media type, mounting interface, and companion component. A similar shape or outside dimension alone does not confirm compatibility.
Is K&N RU-5288 washable and reusable?
Serviceability depends on the exact media used for this part number. Follow the K&N cleaning and oiling directions for this filter and never apply oil to media specified as dry.
What should be checked after installing K&N RU-5288?
Verify seals, clamps, fasteners, hoses, sensors, wiring, and surrounding clearance as applicable. Check for leaks or contact, then follow the manufacturer service and reinspection schedule.
Installation Instructions
- Clamp directly onto 3in ID air intake tube. rubber flange stretches slightly for precise fit.
- No additional hardware required. vibration-absorbing design ensures secure attachment.
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