Features:
On /Off /Reserve. Plastic fuel filter. Fuel exits to the back. Comes with rubber sealing washer for a tight fit with no leaks
Threading: 20 x 1.0mm

hex nut external diameter??26mm

Ribbed fuel outlet 8.6mm Outer Diameter
Replaces Honda part numbers:
16951-MF5-015 , 16950-MM2-013 , 16950-MM2-003 ,16950-MF8-771 Similar to Honda part numbers: (Original fuel exit to the right)
16950-MC9-830 , 16950-ME2-010 , 16950-ME2-000 , 16950-MM9-013 , 16950-MJ1-005 Fit For :
For Honda CMX450C FT/VT500 GL500/650 CB450/550/650SC CB400 VTEC 99-08 CBF600 04

CMX450C Rebel – 1986-1987

VT500C Shadow 500 – 1983-1985

VT500FT Ascot – 1984

CB550SC Nighthawk – 1983

CB650SC Nighthawk – 1983-1985
Fit For Honda: (Original fuel exit to the right)
CB450SC Nighthawk – 1982-1986

FT500 Ascot – 1982-1983

GL500 Silver Wing – 1981-1982

GL500I Silver Wing Interstate – 1981-1982

XL600V Transalp – 1989-1990

GL650 Silver Wing – 1983

GL650I Silver Wing Interstate – 1983

CB700SC Nighthawk – 1984-1986
Note:
Check the threading on your bike to be sure this is what you need before you buy.
Measure the outer diameter of the threaded outlet on the gas tank, not the inner diameter of the petcock nut.