K&N Oil Filter KN-621

K&N Oil Filter KN-621

The K&N Oil Filter KN-621 is engineered for racers, engine builders, and everyday motorcycle or ATV riders who want premium filtration and dependable engine protection. Built for performance use, it delivers strong oil flow while helping keep harmful contaminants away from vital engine components.

Constructed with advanced synthetic filter media, the KN-621 traps up to 99% of harmful contaminants without compromising oil flow rates. It is compatible with conventional, synthetic blend, and full synthetic oils, making it an excellent choice for routine maintenance or demanding riding conditions.

K&N’s signature wrench-off design includes a 17mm hex nut on the end for quick installation and removal. The cross-drilled nut also allows easy safety wire attachment for race or track applications. A heavy-duty canister, reinforced base plate, double-rolled seal, and pre-lubed gasket provide durability and a secure leak-resistant fit.

Direct replacement for select Arctic Cat OEM oil filters including 0812-029, 0812-034, 0812-135, and 3436-021.

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