For the 1983 Honda CB550SC, this exhaust selection covers sealing components rather than replacement pipes or mufflers. The port gasket comes singly or in a ten-pack; the crossover gasket is a separate choice. Identify the connection you are servicing before ordering.
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 /...
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...
1978 Honda CB400A Motorcycle Parts1978 Honda CB400TI Motorcycle Parts1978 Honda CB400TII Motorcycle Parts1979 Honda CB400TIIZ Motorcycle Parts1979 Honda CB400TIZ Motorcycle Parts1980 Honda CB400TA Motorcycle Parts1981 Honda CB400TB Motorcycle Parts1982 Honda CB450SC Nighthawk Motorcycle Parts1982 Honda CB450T Hawk Motorcycle Parts1983 Honda CB450SC Nighthawk Motorcycle Parts1983 Honda CB550SC Nighthawk Motorcycle Parts1983 Honda CB650SC Nighthawk Motorcycle Parts1984 Honda CB650SC Nighthawk Motorcycle Parts1984 Honda CB750SC Motorcycle Parts1985 Honda CB450SC Nighthawk Motorcycle Parts1985 Honda CB650SC Nighthawk Motorcycle Parts1985 Honda CB750SC Motorcycle Parts1986 Honda CB450SC Nighthawk Motorcycle PartsHonda CB Exhaust Gaskets & Mounting HardwareHonda CB Exhaust Systems, Mufflers & HardwareHonda CB400 Motorcycle Parts by Model & YearHonda CB400T Hawk Motorcycle Parts (1978–1981)Honda CB450 Motorcycle Parts by Model & YearHonda CB450SC Nighthawk Motorcycle Parts (1982–1986)Honda CB550 Motorcycle Parts by Model & YearHonda CB550SC Nighthawk Motorcycle Parts (1983–1984)Honda CB650 Motorcycle Parts by Model & YearHonda CB650SC Nighthawk Motorcycle Parts (1982–1985)Honda CB750 Motorcycle Parts by Model & YearHonda CB750SC Nighthawk Motorcycle Parts (1982–1986)Series 3: CB700-750SC (82-86)Series 5: CB650 (79-82)Series 6: CB500-CB550 (71-78)Series 7: CB400-CB450 (65-86)
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...
Choose the seal for the exhaust connection being serviced
The two port-gasket packages share three replacement references. The crossover gasket has its own references and function. Package size determines supplied port-gasket quantity; it does not identify another exhaust joint or the motorcycle’s required seal count.
Choose the port-gasket package from your required quantity
Both port-gasket listings identify the same three replacement references. The individual item is explicitly sold each, while the pack supplies ten. Choose between them from the number of seals you need, keeping supplied quantity separate from any assumption about an entire exhaust service.
Give the crossover joint its own reference check
The crossover gasket identifies 18392-413-000 and 18392-MG7-750, instead of the port gasket’s numbers. Compare that separate component with the joint being serviced. Its description does not state a package count, so confirm the supplied contents where quantity affects your order.
Common questions
Are pipes or mufflers included here?
The products shown are port and crossover gaskets. None is described as a pipe, muffler or complete exhaust system. Plan those replacement assemblies separately from the seal choices.
Do the single gasket and ten-pack serve different locations?
The descriptions call both products exhaust port gaskets and give the same replacement references. Their stated difference is supplied quantity. The crossover gasket is the separately named seal, with a different set of references.
Does the crossover gasket come as a pair?
Its description identifies a crossover gasket and two replacement references without specifying a supplied pair or package count. Confirm the contents before ordering; two references should not be read as two included gaskets.
Not sure which part you need?
Send your model and year, plus photos of your existing part and any changes to the original setup.