Genuine Honda thermostat o-ring. This o-ring fits on the joints and pipes running to the thermostat.
5 are necessary on most bikes, consult your manual to be sure how many you need.
Honda Part Number: 91301-MB6-003 (21.9x2.3mm)
Fits on Honda Part: 19414-415-000 (water pipe)
Fits Honda:
CX500/A/C/D - 1978-1983
GL500/I - 1981-1983
VF750S - 1982-1983
GL1000 - 1975-1979
VF1000/F/R - 1984-1985
GL1100/A/I - 1980-1983
VF1100S - 1984-1985
also fits many others. . .
