Replace your DOHC CB's spark advancer cover gasket with this Spark Advancer Cover Gasket (rubber O-ring), replacing OEM #30372-425-000.
Key Features
• Spark advancer cover gasket (rubber O-ring)
• Replaces OEM #30372-425-000
• Honda part name: Gasket, Points Cover
Fitment / Compatibility
• Honda CB750K (1979‑82)
• CB750F (1979‑82) Supersport
• CB750C (1980‑82) Custom
• CB750L (1979) Limited
• Honda CB900C (1980‑82) Custom
• CB900F (1981‑82) Supersport
• CB1000C (1983) Custom
• CB1100F (1983) Supersport
Part Number: 18-7059
Check the listed model and year, then read any fitment notes in the description.
| Make | Model | Year |
|---|---|---|
| Honda | CB750K Standard | 1979 |
| Honda | CB750F Supersport | 1979 |
| Honda | CB750L Limited | 1979 |
| Honda | CB750K | 1980 |
| Honda | CB750F | 1980 |
| Honda | CB750C Custom | 1980 |
| Honda | CB750K | 1981 |
| Honda | CB750F | 1981 |
| Honda | CB750C | 1981 |
| Honda | CB750K | 1982 |
| Honda | CB750F | 1982 |
| Honda | CB750C | 1982 |
| Honda | CB900C Custom | 1980 |
| Honda | CB900C | 1981 |
| Honda | CB900F Supersport | 1981 |
| Honda | CB900C | 1982 |
| Honda | CB900F | 1982 |
| Honda | CB1000C Custom | 1983 |
| Honda | CB1100F Supersport | 1983 |
No listed models match your search.
Free ground shipping over $50
To the USA & Canada. In-stock orders usually ship from our own warehouse the same or next business day.
| Destination | Delivery time |
|---|---|
| USA | 4–7 business days |
| Canada | 2–6 business days |
Ground shipping includes tracking, emailed when your order ships. Need it sooner? Express options are available at checkout.
60-day returns on eligible parts
No restocking fees. Eligible parts must be unused, uninstalled, unaltered and complete. The 60-day window starts when your order is delivered.
Electrical parts are excluded from standard returns. Check return eligibility.
Start your return below. Wait for our instructions before mailing a part back.
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Canada Post Economy: Available at checkout for select small items. Allow 1–3 weeks for delivery. No tracking or insurance is included.
Outside the USA & Canada: Delivery times vary by destination and shipping method. Buyers are responsible for applicable duties, taxes and import fees. We cannot mark orders as gifts.
Frequently Asked Questions
What part of the DOHC Honda CB engine does gasket 18-7059 seal?
It is the rubber O-ring for the spark-advancer cover on the listed CB750, CB900, CB1000C and CB1100F engines.
Which Honda gasket number does 18-7059 replace?
The spark-advancer cover O-ring cross-references Honda OEM 30372-425-000.
How many spark-advancer cover gaskets are included and used?
One gasket is included and one is used on each compatible engine.