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1979 Honda CB400TII Hawk II Exhaust Gaskets

Exhaust gaskets for the 1979 Hawk II are selected by position, not simply by their ring shape. Identify the cylinder-head port, headpipe joint or collector-to-muffler connection being serviced. Then choose the correct seal and purchase quantity for the work.

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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...
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Honda CB450 CB400 exhaust joint gasket for headpipe 18391-413-000

1978-86 Honda CB450 / CB400 Exhaust Joint Gasket for Headpipe ~ Replaces 18391-413-000

$10.73 USD
17-4504
Replace your CB400 or CB450 exhaust joint gasket with this Exhaust Joint Gasket for Headpipe, replacing OEM #18391-413-000 / #18391-413-010.Key Features• Exhaust joint gasket...
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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1979 Honda CB400TII Hawk II · Exhaust Gaskets Buying guide

Identify the joint before selecting the gasket

The range includes one-piece and ten-pack port seals plus separate headpipe and muffler-joint gaskets. Keep those sealing locations distinct, especially where original exhaust sections have been replaced.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18212-634-000 Single exhaust-port gasketOne gasket for the exhaust port, using references 18212-634-000, 18291-236-000 and 18291-MN4-920.View part 1978-86 Honda CB450 / CB400 Exhaust Joint Gasket for Headpipe ~ Replaces 18391-413-000 Headpipe joint gasketSeparate headpipe-joint seal using references 18391-413-000 and 18391-413-010. Match it to the headpipe joint being serviced.View part Honda CB Exhaust Crossover Gasket ~ Replaces 18392-413-000 Muffler-joint gasketJoint gasket using references 18392-413-000 and 18392-MG7-750. Also identified for the offered slip-in muffler at the original collector.View part

Related parts: Ten-pack of exhaust-port gaskets

Separate port seals from sleeve-shaped joint seals

Start at the leak or the connection being dismantled, then identify the corresponding gasket. The port gasket is offered individually; the other featured seals address exhaust pipe joints. Similar appearance is insufficient for choosing a joint seal, and altered pipework needs a direct application and size check.

Use the bulk pack for the right kind of seal

The related bulk pack contains ten exhaust-port gaskets with the same listed replacement references as the individual port gasket. It is useful when buying several port seals or spares. It does not combine the headpipe-joint and collector-to-muffler gasket types into one service package.

Common buying questions

Does the ten-pack contain different exhaust gasket types?

No. It contains ten exhaust-port gaskets. The headpipe-joint gasket and the collector-to-muffler gasket are separate products, so identify the joints you are servicing before deciding which packages belong in the order.

Which gasket is specified for the slip-in muffler at the original collector?

The offered slip-in muffler points to the joint gasket using reference 18392-413-000. Confirm that the original collector and connection remain fitted; a modified exhaust may need a different seal arrangement.

Can I choose a sleeve gasket by its photograph?

Use the connection position and replacement reference as well as the shape. The headpipe and muffler-joint seals are separate applications. If the pipes are non-original, compare their actual joint requirements before ordering either gasket.

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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