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Find all K&N Filters promo codes and savings opportunities, tracked in real-time. Includes verified codes and single-use codes & more. Updated Jul 2026.
Active offers available right now.
Active coupons
$5 Off Cabin Filters at K&N Filters
$15 Off Throttle Control at K&N Filters
15% Off Motor Oil at K&N Filters
Buy One Get One Free Facecover (2 Items) at K&N Filters
Free Glove On Storewide (Minimum Order: $200) at K&N Filters
20% Off Home Air Filters at K&N Filters
Free Fender Cover On Storewide (Minimum Order: $100) at K&N Filters
Free Hat On Storewide (Minimum Order: $50) Must Add Hat To Cart at K&N Filters
15% Off Intake Kit And An Exhaust System at K&N Filters
20% Off Air Filters Y Cabin Filters at K&N Filters
10% Off Wiper Blades, Oil Filter, Motor Oil, And An Air Filter Cleaning Kit Together at K&N Filters
$50 Off Air Intakes at K&N Filters
Get $10 Off The Cleaning Kit On With Cabin Air Filter And A Cabin Air Filter Cleaning Kit (Must Order Both Products) at K&N Filters
$10 Off When Purchasing A Home Air Filter And A K&n Hvac Filter Cleaner (99-6010) (Must Order 1 Home Air Filter, 1 (99-6010) K&n Hvac Filter Cleaner) at K&N Filters
Free Gift On Storewide (Minimum Order: $100) at K&N Filters
10% Off Cleaning Kit (Must Order Air Filter And An Air Filter Cleaning Kit Together) at K&N Filters
20% Off Air Filter Wrap (Must Order Air Intake System) at K&N Filters
20% Off Motor Oil Bundle at K&N Filters
Free K&n Tote Bag (Add Tote Bag) Storewide (Minimum Order: $100) at K&N Filters
10% Off Select Items at K&N Filters