Looking for a new thermostat? Here’s a few that have been shown to work for all CX500, CX650, GL500 and GL650s except the Turbos. Don’t forget the thermostat O-ring – part number 91302-657-000 for all of the above models – available from eBay US
| Maker | Part Number or Model | Temperature Rating | Link to Purchase | Notes |
|---|---|---|---|---|
| Honda | 19300-611-005 | ? | eBay |
|
| Stant | 13958 | 180F/82C | eBay US , Amazon |
|
| Dayco | DT15A-BP | ? | eBay AU |
91°C? DT15C 71deg C? – One report of being too tall |
| Dayco | DT15A | 82° C | eBay AU |
52mm across, 40mm total height, 21mm lower height – One report of being too tall |
| Autozone | Duralast 15868 | 82° C | Autozone stores, sometimes eBay US | |
| Halfords | HTK605 | ? | UK | |
| Falcon | FTH115K | ? | UK |
Some riders have reported success with the Napa 535080, others say it is too tall to fit. YMMV. The thermostat is supposed to be the same as one for a couple of Honda cars – the 1973-1979 Civic (1200) and the 1976-1979 Accord. We’ll try to find out whether that was the only thermostat used for those cars for those years (different engine options? Unsure).
Honda CX500 Turbo and CX650 Turbo Thermostat Alternatives and Sources
Offset type with jiggle pin. Neck/seat 38mm diameter, ID 57.5mm, tangs 5mm each. 0.9bar or 13psi.
Don’t forget the thermostat O-ring – part number 91302-657-000 for both Turbo models – available from eBay US
| Maker | Part Number or Model | Sources | Temperature | Notes |
|---|---|---|---|---|
| Honda | 19300-679-003 19320-679-F00 ? 19320-679-000 ? |
|||
| Stant | 13868 | eBay US , Amazon |
180F | |
| Napa | 101 | eBay US |
180F | |
| Car Quest | 32438 | eBay US |
180F |