Here are some brands and part numbers for the Honda CX500, GL500, CX650 or GL650’s radiator cap. It’s a recovery-type cap – there’s an expansion tank behind the motor that the coolant flows into when it expands and it’s retrieved as the bike cools down, and the recovery caps allow this to happen. Turbo owners should look in the next section of the page.
| Manufacturer | Part No. | Sources | Pressure | Notes |
|---|---|---|---|---|
| CPC | 543-13 | eBay AU | 13psi | Made in Australia |
| Halfords | HRC608 | ? | UK | |
| Repco | RC50-13 | Repco stores | ? | Australia |
| Honda | 19045-PA0-014 | ? | Superseded part no. | |
| Honda | 19045-634-003 | ? | Superseded part no. | |
| Honda | 19045-449-770 | ? | Superseded part no. | |
| Honda | 19045-692-003 | ? | Current part number |
Honda CX500 Turbo and CX650 Turbo Radiator Cap Alternatives and Sources
Here’s some notes for the Turbo owners as to which radiator caps have been found to work and where to find them.
| Manufacturer | Part No. | Pressure | Notes | |
|---|---|---|---|---|
| Stant | 10229 | eBay US, Amazon | 13psi | CX500T |
| Napa | 703-1445 | eBay US | 13psi | CX500T |
| Sankei | KH-C13 | ? | 88kpa, 0.9kg/cm³ | CX500T |
| Honda | 19045-MC7-003 | Not readily available. CX500 Turbo | ||
| Honda | 19045-MG9-003 | Not readily available. CX650 Turbo |
If you’re done here, go back to the cooling system page.