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1983 Honda CB550SC Headpipe & Crossover Gaskets

An exhaust-gasket order for the 1983 Honda CB550SC starts with the sealing location and then the supplied quantity. Here, individual and ten-pack port gaskets use the same replacement numbers. The crossover seal has different references and should be compared as its own component.

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Honda CB900 CB650 CB550 exhaust headpipe gasket (each) 18212-634-000

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18212-634-000

$3.58 USD
17-2813
Replace one exhaust port gasket on your CB650, CB400, CB450, or modern CB900F with this Exhaust Port Gasket, 1 piece, replacing OEM #18212-634-000 /...
Honda CB900 CB650 CB550 exhaust headpipe gaskets (pk 10) 18212-634-000

Honda CB Exhaust Headpipe Gaskets ~ (Pk/10) ~ Replaces 18212-634-000

$27.95 USD
17-3813
Stock up on exhaust port gaskets for your CB650, CB400, CB450, or modern CB900F with this 10-pack, replacing OEM #18212-634-000 / #18291-236-000 / #18291-MN4-920.Key...
Honda CB750 CB650 CB550 CB450 exhaust crossover gasket 18392-413-000

Honda CB Exhaust Crossover Gasket ~ Replaces 18392-413-000

$9.95 USD
17-4505
Replace your Nighthawk or CB400/CB450 exhaust crossover gasket with this Exhaust Crossover Gasket, replacing OEM #18392-413-000 / #18392-MG7-750. Fits the mid-'80s CB750SC/CB650SC/CB550SC Nighthawks plus...
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1983 Honda CB550SC · Gaskets & Mounting Hardware Buying guide

Use replacement references to separate the two seal types

The choices are an each-sold port gasket, a ten-pack of that gasket type and a crossover gasket. Their descriptions include the 1983 CB550SC. No mounting stud set, clamp package or exhaust assembly is offered among these products.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18212-634-000 Individual exhaust port gasketSold each, with listed replacement references 18212-634-000, 18291-236-000 and 18291-MN4-920. The application includes the 1983 CB550SC Nighthawk.View part Honda CB Exhaust Headpipe Gaskets ~ (Pk/10) ~ Replaces 18212-634-000 Exhaust port gaskets, pack of tenTen exhaust port gaskets per pack, with the same listed replacement numbers as the each-sold option. The description includes the 1983 CB550SC.View part Honda CB Exhaust Crossover Gasket ~ Replaces 18392-413-000 Exhaust crossover gasketSeparate crossover seal referencing 18392-413-000 and 18392-MG7-750, with 1983 CB550SC Nighthawk application. Confirm the supplied contents for the repair you plan.View part

Match the sealing location before comparing quantities

The port-gasket options list 18212-634-000, 18291-236-000 and 18291-MN4-920; the crossover seal lists 18392-413-000 and 18392-MG7-750. Those two reference groups help distinguish the components. A model application alone is not a reason to substitute one sealing type for the other.

Count the repair’s seals independently of package size

The ten-pack states ten port gaskets supplied, and the individual option states one. Those package quantities do not specify a full-bike replacement requirement. Count the seals needed for the actual work and review the crossover gasket’s separate contents before completing the purchase.

Common questions

Is a crossover seal included in the headpipe ten-pack?

The ten-pack description identifies ten exhaust port gaskets. It does not describe an included crossover gasket. The crossover seal is a separate product with different replacement references, so order it independently when that is the component required.

Which port-gasket references are listed?

The single and ten-pack descriptions both name 18212-634-000, 18291-236-000 and 18291-MN4-920. Compare these with the part information for the exhaust being serviced. The listings provide references, rather than gasket dimensions to infer from their photos.

Does this selection include new exhaust fasteners?

The three products shown are two port-gasket purchasing options and one crossover gasket. Their descriptions do not list studs, nuts, clamps or other mounting hardware as included. Assess any fastener requirement as a separate purchase.

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