1983 Honda CB450SC Parts

Parts and fitment guide for your 1983 CB450SC

This collection covers listed repair and service parts for the 1983 Honda CB450SC Nighthawk, catalogued here as CB450SCD. Match the full model-year application and installed component before ordering. The CB450 name also appears on other Honda models, so displacement alone does not establish compatibility.

Browse by repair

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

Selected parts for the 1983 CB450SC

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

• Fork oil seals — listed replacement: 33 × 46 × 11 mm seal set; compare the installed forks.
• Rear brake shoes — listed replacement: set of two shoes, 139 mm diameter and 40 mm width; compare the existing brake.
• Oil filter — stock-type paper filter element; check the application and what is included before service.

Identify your CB450SC (1983)

Our catalog uses CB450SCD for this 1983 CB450SC Nighthawk application. Compare the complete frame and engine identifiers with Honda documentation for the motorcycle’s original market. Registration year, paint colour and the tank badge alone do not confirm the application.

Use our Honda CB model guide for help locating identifiers.

Plan the carburetor and intake repair

For a 1983 CB450SC intake repair, kit 48-1397 is listed for one carburetor and holder 33-0017 is sold individually with an O-ring. Inspect the installed holders as well as the carburetors when making the parts list; replacing internal carburetor parts does not renew the intake mounting rubbers.

Fitment questions

Is the 1982 accelerator-pump kit also the listed choice for 1983? No such substitution is established by these listings. Kit 20-9041 names the 1982 CB450SC; kit 20-9040 separately names 1983 and includes a diaphragm with rod and bellow rubber. Match the old pump assembly before ordering rather than carrying the earlier application forward.

Is the 139mm rear-shoe dimension a brake-drum wear limit? No. The linked 29-3102 listing gives 139mm diameter and 40mm width as replacement-shoe dimensions. Those figures do not provide a Honda drum service limit. Have the drum assessed against the correct service information before deciding that new shoes alone will complete the repair.

Related CB450 collections

• 1982 CB450SC parts
• 1984 CB450SC parts
• All CB450SC Nighthawk parts
• Browse CB450 parts by model

Need help matching a part? Contact VintageCB750 with your model year, original market, frame and engine identifiers, and component photos.