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K&N RU-2990 delivers high-flow filtration for racing vehicles radio-controlled cars generators snowmobiles tractors ATVs UTVs and custom intakes with 3.5 inch diameter. This round tapered clamp-on design with molded rubber flange stretches up to 1/16 inch for secure vibration-free fit. 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 intricate mesh to block contaminants and protect engines in dusty harsh conditions.
- Easy Clamp-On Installation: Pre-oiled and ready to install stretches to fit in-between sizes for quick performance upgrade on any compatible intake.
- Increased Engine Power: State-of-the-art media design boosts airflow for higher horsepower acceleration and overall responsiveness.
- Flanges absorb vibration and seal securely on 3.5 inch intakes.
- Product weight 1.4 pounds ships in 7.1 x 7.1 x 6.75 inch box.
- Clamp over 3.5 inch intake pipe flange stretches 1/16 inch if needed.
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-2990 |
| 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-2990. 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.
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Frequently Asked Questions
How do I confirm K&N RU-2990 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-2990 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-2990?
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 over 3.5 inch intake pipe flange stretches 1/16 inch if needed
- Uses standard hose clamps compatible with rubber flange no drilling required
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