1980 Honda CB900C Parts

Parts and fitment guide for your 1980 CB900C

This 1980 Honda CB900C Custom collection includes stock-airbox and paper oil-filter service parts. The linked 73-0139 airbox boot set lists the 1980–82 Custom, but shared intake fitment does not establish interchangeability for the motorcycle’s other assemblies.

Browse by repair

• Engine parts — engine components, seals and service items.
• Fuel-system parts — fuel delivery, intake and air-filter listings.
• Electrical parts — ignition, controls and electrical accessories.
• Brake & clutch parts — brake and clutch service listings.
• Suspension & wheels — fork, wheel and suspension items.
• Exhaust parts — exhaust components and hardware.

Selected parts for the 1980 CB900C

Check each listing for model fitment, dimensions and included quantities before ordering.

• Stock air filter — for the stock airbox; check modified intakes separately.
• Airbox boot set — four carb-to-airbox boots; check the clamp requirements in the listing.
• Oil filter — paper filter element; O-rings, springs and washers are separate.

Identify your CB900C (1980)

Compare the motorcycle’s identifiers with its original-market documentation.

• Identifiers to record — complete frame/VIN and engine markings

Use the linked model chart as a reference alongside those records, especially when registration year and model year differ.

View the model reference chart

For help locating identifiers, see our Honda CB model identification guide.

Keep the two sides of the intake distinct

The selected 73-0139 boots connect the carburetors to the airbox. The set contains one each of four different replacement references, 17251-438-000 through 17254-438-000. Engine-side holders are different parts. For this airbox set, the listing specifies 60–65mm band clamps 15-0673 when replacement clamps are required.

Fitment questions

Can the CB900C carburetor be identified by model year alone? Honda’s manual distinguishes VB43A and Canadian VB43B carburetors and places their identification on the carburetor body. Check that marking and the original market before selecting metering parts for a 1980 Custom.

Does the oil-filter element replace the housing spring and seals? No. Paper element 15-0002 lists O-rings, springs and washers separately. Compare what is present in the filter housing before ordering so a missing service part is not mistaken for something supplied with the element.

Related CB900C collections

• 1981 CB900C parts
• 1982 CB900C parts

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