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1969 Honda CB450K Headpipe Port Gaskets

A headpipe service order for your 1969 CB450K needs the correct port seal and enough pieces for the joints being opened. These listings offer one gasket or ten per pack. Keep any separate retaining hardware on its own parts list before ordering.

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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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1969 Honda CB450K · Gaskets & Mounting Hardware Buying guide

Separate sealing pieces from headpipe mounting components

The single and bulk products are exhaust-port gaskets, not complete hardware sets. Their Honda replacement references match. The choice between them follows the number of gaskets needed rather than a different stated sealing function.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-283-010 One-piece headpipe port sealIndividual exhaust port gasket referenced to Honda 18291-283-010 / 18291-ME9-000 / 18291-MM8-880. Sold individually; order the quantity required.View part Honda CB Exhaust Headpipe Gaskets ~ (Pk/10) ~ Replaces 18291-283-010 Ten-pack of headpipe port sealsTen exhaust port gaskets per pack, listed against the same Honda references. Package quantity does not state the number needed on one motorcycle.View part

Choose the gasket from its sealing position

Headpipe wording identifies the engine-side port gasket in these descriptions. Compare the part required at that joint with the Honda references. Do not treat the general exhaust category as proof that the same ring is appropriate at a muffler joint or another location on a modified system.

Keep the hardware order specific

Neither product description lists a complete set of mounting pieces with its gasket contents. Identify which retaining parts are already serviceable and which require replacement. This prevents a correctly chosen gasket package from being mistaken for everything needed to remount the headpipes.

Buying questions

Does a gasket package include the headpipe retaining pieces?

The stated contents are port gaskets only, in individual or ten-pack quantities. Collars, studs and other retaining hardware are not established as included. Identify those separate parts from the fitted exhaust and the service work planned.

Is a ten-pack a matched set for one CB450K?

It is described as ten gaskets per pack, not a motorcycle-specific complete service set. Count the actual gasket requirement for your job. Use individual pieces where that purchasing quantity suits the work, or choose the bulk pack for the total needed.

What should I check if aftermarket headpipes are fitted?

Identify the sealing part required at the actual fitted port joint. These descriptions give replacement references and model applications, but no gasket dimensions. Confirm compatibility with the changed headpipes before choosing the individual or ten-pack quantity.

Not sure which part you need?

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

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