About the Honda CB500K Four
The collection is restricted to exact CB500K 1971, 1972 and 1973 product tags. Choose the repair below and keep narrower product coverage—especially the 1972–1973 fork seals—visible when ordering.
Honda introduced the Dream CB500 Four in 1971 with a four-stroke OHC inline-four. Honda's model history records its evolution into the CB550 Four in 1974. This collection is deliberately narrower: its product rules and repair guidance target the 1971, 1972 and 1973 CB500K applications in the PartsNMore catalog.
Keep narrower component coverage visible
The carburetor kit, bowl gasket, engine overhaul set, front master-cylinder kit and rear shoes below list all three collection years. The linked fork oil seals list only 1972–1973, so they must not be treated as a 1971 application. Replacement forks, carburetors and brake assemblies should be identified independently.
Identify the model and plan the repairModel and application differences
1971 CB500K Four
Use products that explicitly list 1971
The featured carburetor, engine and brake products list 1971. The linked fork oil seals do not, so identify the fitted fork before ordering seals for this year.
1972–1973 CB500K Four
Core repairs plus the listed fork seals
The same featured carburetor, engine and brake routes list these years, and the 35 × 48 × 10.5/11 mm oil-seal pair explicitly adds 1972–1973 fork coverage.
Different CB500 motorcycle
Use the correct model collection
For the 1975–1976 twin, use the CB500T guide. For later K, S, R, F or X applications, return to the CB500 model hub.
Identify your motorcycle before orderingCB500K frame, engine and component checks
Start with the complete model year and confirm that the motorcycle retains the classic four-cylinder engine and the fitted assembly being repaired. Product applications below are not a serial-number chart.
CB500K Four identification checklistWhat to record before ordering
| Check | What to record | Why it matters |
|---|---|---|
| Year and model | CB500K with 1971, 1972 or 1973 model year | Selects the collection's exact-year product tags. |
| Frame and engine | Both complete stamped identities | Confirms the classic Four and identifies a changed engine. |
| Carburetors | Body markings, bowl profile and required service pieces | Separates the kit from the individual bowl gasket. |
| Front brake | Master-cylinder bore, piston and reservoir details | Matches the hydraulic repair kit to the fitted cylinder. |
| Fork and rear hub | Old seal dimensions and rear-brake hardware | Protects against the fork seal's missing 1971 application and replacement components. |
Contact PartsNMore with the model year, frame and engine markings, original part details and clear component photos.