About the Honda CB350K Twin
The classic CB350 twin: identify the year, then rebuild the assembly that needs attention.
The CB350 twin combines an air-cooled overhead-cam engine with a five-speed gearbox. Decades of repairs can leave a K-model with replacement carburetors, an exchanged engine or different forks. The frame and engine have separate stamped identities, so recording both is worthwhile before a restoration begins.
An early fork and a later carburetor need separate choices
The fork seals featured here cover CB350K 1968–1971; the carb kit covers 1970–1972. A broader clutch-plate range does not change either application. If your bike is the late G twin with a front disc brake, use the CB350G guide. A four-cylinder bike belongs in CB350F parts.
Know your CB350K before choosing partsCB350K repair applications at a glance
These are product applications, not a single production-year chart for the whole motorcycle.
Carburetors: 1970–1972
Overhaul kit or float-valve repair
A full service kit and an individual float needle/seat address different repair scopes. The needle and seat control fuel entering the bowl.
Fork seals: 1968–1971
Keep the early fork application intact
These seals have an earlier year range than the carb kit. Identify replacement forks by the assembly and old seal dimensions.
Clutch plate: 1968–1973
An individual plate, not a full pack
The linked plate is sold individually. Inspection determines which plate types and how many pieces your clutch needs.
Identify your motorcycle before orderingCB350K frame, engine and component checks
Record the identity and condition of the installed assemblies. The stamped locations below are from Honda's twin owner's manual.
CB350K identification checklistWhat to record before ordering
| Check | What to record | How it helps |
|---|---|---|
| Frame number | Left side of the steering head | Records the chassis identity. |
| Engine number | Top of the upper crankcase, left side | Identifies the engine independently of the frame. |
| Carburetor bodies | Markings and photographs before dismantling | Matches service parts to fitted carburetors. |
| Forks | Tube diameter, old seal markings and assembly details | Identifies the fork when its history is unknown. |
Contact PartsNMore with the full model and year, frame and engine markings, and clear photos of the component.