Brand New (24) Pack of Genuine Kawasaki 11013-7044 Air Filter Elements This filter is designed for internally vented carburetor FX engines, including: FX651V through FX1000V Specific engine model numbers: FX651, FX751, FX801, FX850, FX921, FX1000 It is the outer air filter element for these engines, with dimensions approximately: OD: 4.15 in (105.5 mm) ID: 2.37 in (60.1 mm) Length: 10.43 in (265 mm) Efficiency: 99.9% filtration