Replace your seat hinge pin with this Seat Hinge Pin, replacing OEM #77203-405-000.
Note: 2 used per bike, order the quantity you require.
Key Features
• Seat hinge pin
• Replaces OEM #77203-405-000
• 2 per bike
• Honda part name: Pin, Seat Hinge
Fitment / Compatibility
• Honda CB750K (1977‑78)
Part Number: 73-0946
Check the listed model and year, then read any fitment notes in the description.
| Make | Model | Year |
|---|---|---|
| Honda | CB750K | 1977 |
| Honda | CB750K | 1978 |
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.
Start a returnOther shipping options
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
How many Honda 77203-405-000 seat hinge pins are included and needed?
One seat hinge pin is included. Two pins are used per compatible motorcycle, so order two to replace both seat-hinge pins.
Which seat hinge uses Honda pin 77203-405-000?
Honda OEM 77203-405-000 is the seat-hinge pin for 1977-1978 Honda CB750K seats. Match the OEM number and seat-frame hinge design because nearby years can use a different pin.
What should be inspected when replacing the seat hinge pins?
Check both hinge brackets, pin holes and retainers for elongation, cracks or missing hardware. After installation, verify the seat opens freely, closes squarely and cannot shift sideways or contact the fuel tank.