Universal Harley-Davidson/Buell 3in OD x 4.063in H Chrome Oil Filter (KNNKN-171C)Keep your engine running clean with the Universal Harley Davidson Buell 3in OD x 4. 063in H Chrome Oil Filter from K&N. Engineered with a heavy duty construction and premium filtration media, this oil filter captures harmful contaminants while maintaining excellent oil flow protecting your engine mile after mile. Features Advanced synthetic filtration media for superior particle capture Built in nut for easy wrench off removal Heavy duty canister