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1980 Honda CB400TA Hawk Exhaust Gaskets

Three gasket positions matter on the original 1980 Hawk exhaust: the cylinder-head ports, headpipe joints and collector-to-muffler connections. Match the seal to the joint being opened. Individual port gaskets and a ten-pack cover different ordering needs without changing the required gasket type.

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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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1980 Honda CB400TA Hawk · Exhaust Gaskets Buying guide

Choose each exhaust seal by its joint location

The thin port ring and the two sleeve-style joint seals serve different connections. Identify the original assembly position first, then decide whether individual port gaskets or a larger pack makes sense for the repair.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18212-634-000 Individual exhaust port gasketOne gasket for a cylinder-head exhaust port. Sold each; two are used when renewing both original headpipe connections.View part 1978-86 Honda CB450 / CB400 Exhaust Joint Gasket for Headpipe ~ Replaces 18391-413-000 Headpipe joint gasketSleeve-style seal replacing references 18391-413-000 and 18391-413-010. Match the joint position before ordering.View part Honda CB Exhaust Crossover Gasket ~ Replaces 18392-413-000 Collector-to-muffler gasketReplacement for references 18392-413-000 and 18392-MG7-750, used at the original collector’s muffler joints.View part

Related parts: Ten-pack of exhaust port gaskets

Count positions without assuming pack contents

The original diagram shows two port gaskets, two headpipe-joint seals and two collector-to-muffler seals. The individual port product supplies one gasket, while the related port-gasket pack contains ten. Keep quantities per motorcycle separate from the contents of the product you add to the order.

Use the sleeve reference to avoid mixing joints

The headpipe-joint gasket references 18391-413-000 or 18391-413-010. The collector-to-muffler gasket references 18392-413-000 or 18392-MG7-750. Both are sleeve-shaped, so compare the reference and actual joint instead of relying on a photograph of a similar-looking ring.

Buying questions

Should I choose individual port gaskets or the ten-pack?

Two individual gaskets cover both original cylinder-head ports. The ten-pack contains ten of that port-gasket type for additional work or spares; it is not a mixed set containing the different collector-joint seals.

Which sleeve gasket belongs at the muffler connection?

For the original collector-to-muffler connection, use the type referencing 18392-413-000 or 18392-MG7-750. The 18391-reference headpipe-joint seal belongs at a different position, so identify the joint before choosing either sleeve.

Can I order these by bike model after an exhaust conversion?

Compare the converted joint’s dimensions and construction first. These applications follow the original-style exhaust arrangement. A different collector, welded joint or aftermarket header can require a different seal even on the same motorcycle.

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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