Description:Aftermarket Brand NewThey Come Supplied With One Straight Fitting, One Port Plug, Two 90?? Elbow Fittings, And One Extra Filter.The Petcock Has Settings For Fuel “On”, “Off” And “Reserve”.Part Number: 447-24500-02Flange Length 69mmFlange Width 23.5mmMounting Holes 46mm Center To Center Fitment:For Yamaha SR500 1980-1981For Yamaha Yamaha XS1100 1978-1981For Yamaha XS650 1978-1981For Yamaha XS650S 1978-1983For Yamaha XS750S 1979 For Yamaha XS850 1980-1981For Yamaha XS850L 1980-1981For Yamaha XS850S Special 1980-1981 Note: The 1978 – 1979 XS650 Models Use Two Petcocks And The 1980 – 1984 Models Use One Package Include:1 ?? Fuel Petcock