K&N Universal Clamp-On Air Filter - 2-1/4in Flange 20-Degree (RU-1720)
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✓ Fits
Universal K&N clamp-on air filter (K&N RU-1720). A straight filter with a 20-degree angled center flange, it fits any intake with a matching 2-1/4 inch (57mm) inside diameter mounting flange. The pliable rubber flange stretches up to 1/8 inch (3mm) to fit in-between sizes.
✓ Specs
- Flange inside diameter: 2-1/4 in (57mm)
- Filter diameter: 3-1/2 in (89mm)
- Filter length: 6 in (152mm)
- Shape: Straight, 20-degree angled center flange
- End cap: Rubber
✓ Features
- High-flow cotton gauze media for more airflow than a stock paper filter
- Washable and reusable, cleans up and re-oils to run again and again
- Ultra-strong molded rubber flange absorbs vibration for a secure clamp-on fit
- Stretches up to 1/8 in (3mm) to fit in-between intake sizes
✓ What's Included
- One K&N RU-1720 universal clamp-on air filter
Note: Legal in California ONLY for racing vehicles which may never be used upon a highway. Warranty handled by K&N directly at 800-858-3333, option 1.
NOTE: Outerwears 25-5811 Is used for this filter.
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📦 Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
