This chrome replacement filter exceeds all O.E.M. factory specifications. The check valve prevents oil drain-back. The synthetic-blend filter catches more dirt, yet allows more flow. 17mm nut for easy service. Please see our full K&N product section for fitments not listed here. Fits: Suzuki 87-88 VS700 Intruder; 87-91 VS750 Intruder; 82-04 VZ800 Intruder; 87-04 VZ1400 Intruder, VZ800 Marauder; 98-04 VZ1500LC Intruder; 01-04 VZ800LC Intruder Volusia; 05 Boulevard C50/C50T, C90/C90T