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The K&N SN-2520 universal clamp-on air filter delivers massive clean airflow to snowmobile engines by replacing stock airboxes and OEM filters. This tapered round design with 3.75 inch outside diameter 3 inch top OD 5 inch height 2.438 inch inside diameter and 2 inch angled flange clamps onto 2.5 inch intakes for direct performance gains. Snowmobile riders gain more horsepower and quicker acceleration through superior filtration and unrestricted air intake.
Key Features
- Universal Clamp-On Design: Fits virtually any snowmobile application by replacing the airbox and OEM filter for easy installation on Polaris Arctic Cat Ski-Doo and Yamaha models.
- Ships in protective cardboard box measuring 8.25 x 8.13 x 5.5 inches.
- Slide 2.5 inch clamp over 2 inch angled flange and tighten to intake tube.
- Compatible with rubber or aluminum intake boots on most snowmobile carburetors.
- High-flow media construction outperforms paper filters in airflow and dirt capacity.
- Yes this universal tapered filter clamps onto 2.5 inch ID tubes with 2 inch angled flange matching most Polaris Ski-Doo Arctic Cat and Yamaha snowmobile carbs and turbo setups.
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 | SN-2520 |
| Product Type | Air Filters - Direct Fit |
| Fitment Type | Universal |
| Condition | New |
What's Included
One new K&N air filters - direct fit identified by manufacturer part number SN-2520. 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 3.75 Inch OD 2.438 Inch ID 4 inch H Round Tapered Universal Air Filer
- K&N Universal Air Filter - Round Tapered - 3in Top OD x 3.75in Base OD x 6in H x 2.438in Flange ID
- K&N Universal Custom Air Filter - Round 1.625in Flange / 1.625in ID / 2.75in Overall Height
Frequently Asked Questions
How do I confirm K&N SN-2520 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 SN-2520 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 SN-2520?
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
- Slide 2.5 inch clamp over 2 inch angled flange and tighten to intake tube
- Compatible with rubber or aluminum intake boots on most snowmobile carburetors
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