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1973 Honda CB450K Exhaust Port Gasket Choices

Count the exhaust port seals needed for the work on your 1973 CB450K before choosing a purchasing unit. The individual gasket and ten-pack give the same Honda replacement references. Identify the actual engine-side joint and any changed headpipe requirements before treating either package as suitable.

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Honda CB500 CB450 CL450K2 exhaust headpipe gasket (each) 18291-283-010

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-283-010

$3.58 USD
17-2817
Replace one exhaust port gasket on your CB500T or CB450/CL450 with this Exhaust Port Gasket, 1 piece, replacing OEM #18291-283-010 / #18291-ME9-000 / #18291-MM8-880.Sold...
Honda CB500 CB450 exhaust headpipe gaskets (pk 10) 18291-283-010

Honda CB Exhaust Headpipe Gaskets ~ (Pk/10) ~ Replaces 18291-283-010

$29.95 USD
17-3817
Stock up on exhaust port gaskets for your CB500T or CB450/CL450 with this 10-pack, replacing OEM #18291-283-010 / #18291-ME9-000 / #18291-MM8-880.Key Features• Exhaust port...
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1973 Honda CB450K · Exhaust Buying guide

Compare the sealing reference before calculating the order

Both options replace Honda 18291-283-010 / 18291-ME9-000 / 18291-MM8-880. One purchase supplies an individual gasket or a pack of ten. Required service quantity follows the joints being renewed, not the bulk package count.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-283-010 Exhaust port gasket sold as one pieceIndividual seal with Honda 18291-283-010 / 18291-ME9-000 / 18291-MM8-880 references. Select the quantity for the actual port joints being renewed.View part Honda CB Exhaust Headpipe Gaskets ~ (Pk/10) ~ Replaces 18291-283-010 Ten exhaust port gaskets per packBulk purchase using the same stated replacement references. Ten is the supplied package count, rather than a stated whole-motorcycle service requirement.View part

Calculate quantity after identifying the serviced joints

Decide which port joints need the described sealing part, then total the required pieces. Choose individual purchases or the ten-pack to suit that work and any stock you intend to retain. The listings do not set a mandatory complete-bike replacement count or describe all other exhaust components as included.

Treat modified headpipes as a separate fit question

The Honda references and motorcycle application help identify the intended port gasket. They do not give its exact dimensions or document every altered headpipe joint. Establish the sealing requirement of the assembly actually fitted before selecting a package, and identify any separate retaining or mounting pieces needed alongside it.

Buying questions

How should I select a purchase unit for a partial exhaust repair?

Count the described port gaskets required at the joints included in that repair. One individual purchase supplies one gasket, and a pack supplies ten. Compare that total with the work and any spare stock you want rather than assuming a complete-bike quantity.

What should I compare before stocking a ten-pack for several motorcycles?

Check the port-gasket reference and application required by each motorcycle’s fitted headpipes. The pack supplies ten of the described seal; it is not a mixed gasket assortment. Confirm each separate joint requirement instead of assuming the bulk purchase covers every exhaust in the workshop.

What should I confirm for a replacement headpipe that uses a different joint design?

Identify the sealing component required at that actual engine-side joint and compare the intended replacement reference. These descriptions do not give exact gasket dimensions. Resolve the changed assembly’s fit requirements before relying on the motorcycle application or either package quantity.

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Send your model and year, plus photos of your existing part and any changes to the original setup.

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