Honda OEM radiator cap 19045-692-003 with cap that measures about 2.5 inches in diameter.
Fits all years GL1000, GL1100 and these Honda models:
CX550/A/C/D 78-82 CX650 83GL500/I Silverwing 81-82GL650/I 83
Maintenance schedule: Honda advises inspecting the radiator and coolant core every 8000 miles or 12800 km. Replace your coolant every 2 years or 24,000 miles - whichever comes first.
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4.7
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