Free shipping on eligible orders of $100 or more. Oversized and freight items excluded.

Shop parts / K&N Engineering / New

K&N Filter 3/4 inch Flange 2 inch OD 2 1/2 inch Height

K&N Engineering · New

K&N Filter 3/4 inch Flange 2 inch OD 2 1/2 inch Height

MPN RU-3630 · Store SKU knnRU-3630

$54.99
CHECK AVAILABILITY0 in supplier warehouses. Ask JuiceBuilt about availability.

Supplier stock checked 11/7/2026, 12:35:17 PM UTC. Adding a part does not reserve it.

30-day returns for unopened, unused new parts

Request a return within 30 calendar days after delivery. New parts must be unopened and unused.

Shipping & returns ↗This policy does not limit rights required by law.

Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

K&N Rubber Base Crankcase Vent Filters are designed to clamp directly to metal or plastic tubing. Ideal for engines, transmissions, oil or gas tanks on racing vehicles. Note: Legal in California only for racing vehicles which may never be used, registered, or licensed for use upon a highway. See knfilters.com for CARB status on each part for a specific vehicle. K&N Rubber Base Crankcase Vent Filters are designed to clamp directly to metal or plastic tubing. Ideal for engines, transmissions, oil or gas tanks on racing vehicles. Universal Clamp-On Air Filter 3/4in.FLG; 2in.OD; 2-1/2in.H

Manufacturer fitment & guides

Check RU-3630 against the manufacturer’s application information below.

A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.

Part-specific notes

  • Not CARB approved. Destination and intended-use restrictions must be checked before sale.
  • Emissions acknowledgement required before purchase.
  • California Proposition 65: Y
More from K&N Engineering ↗See the JuiceBuilt workshop ↗

YOUR NEXT MOVE

Your build.