1977 Honda CB550K Parts

Parts and fitment guide for your 1977 CB550K

This collection covers listed repair and maintenance parts for the 1977 Honda CB550K, catalogued here as CB550K3. Use the year and model together when matching carburetors, intake parts and controls.

Browse by repair

• Engine parts — engine seals, hardware and service items.
• Fuel-system parts — carburetor, intake and filter listings.
• Electrical parts — ignition and electrical service items.
• Brake & clutch parts — braking and clutch repair listings.
• Suspension & wheels — fork seals, wheel parts and tools.
• Exhaust parts — exhaust components and hardware.

Selected parts for the 1977 CB550K

Check the listed application, dimensions and included quantity before ordering.

• Carb screw kit — screw and drain-screw set specifically listed for the 1977–78 CB550K.
• Clutch cable — listed for 1974–78 CB550K and 1975–77 CB550F; check routing and handlebar changes.
• Oil filter — paper filter element; O-rings and housing hardware are separate.

Identify your CB550K (1977)

Use the model year together with the motorcycle’s original market when matching parts.

• Identification evidence — record the complete frame/VIN and engine stampings, not just the registration year.

Use the linked chart as an identification aid, not as a verified factory serial range.

View the model reference chart

For help locating identifiers, use our Honda CB model guide.

Choose the 1977–78 carburetor parts

Carb rebuild kit 48-1999 explicitly lists the 1977–78 CB550K. It supplies a #90 main jet, D376 jet needle, jet holder, float needle, gaskets and O-rings. It does not list a pilot jet. Compare the worn parts and required carburetor specification; the supplied main-jet number is kit information rather than a universal tuning recommendation.

Fitment questions

Can I reuse the earlier K-model holder clamp specification? Holder set 73-0135 for 1977–78 calls for eight 45–47mm band clamps 15-0688. Earlier holder set 48-1476 calls for 41–44mm clamps. Match clamps to the replacement holders and their fitted diameter rather than carrying the earlier model’s specification forward.

Is the 1977 steel clutch-plate application unrestricted? No. The 39-1241 listing limits the 1977 CB550K application to engines up to #2002226. Treat that as a condition of this replacement listing, not a complete factory serial range. Confirm the full engine stamping and fitted clutch before selecting the plates.

Related CB550K collections

• 1976 CB550K parts
• 1978 CB550K parts
• All CB550K parts

Need help checking a part? Contact VintageCB750 with the model year, original market, frame and engine markings, and component photos.