1978 Honda CB550K Exhaust Seal Packs and Stud Hardware

Build the exhaust hardware order from the missing or damaged pieces. Port gaskets, stud fasteners and finned clamps are separate purchases with different package contents. Check the retained head-end connection and choose a gasket quantity without interpreting a fastener kit as a complete exhaust assembly.

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Honda CB kick stand stopper rubber 95011-61000

Honda CB Kick Stand Stopper Rubber ~ Replaces 95011-61000

$2.95 USD

Replace a worn kick stand stopper with this Kick Stand Stopper Rubber "A", a direct replacement for OEM #95011-61000. Exceptionally broad fitment across the...

Honda CB550 CB500 CB200 exhaust headpipe gasket (each) 18291-216-000

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-216-000

$4.13 USD

Replace one exhaust port gasket on your CB500/CB550 or smaller Honda with this Exhaust Port Gasket, 1 piece, replacing OEM #18291-216-000 / #18291-MN5-650. Fits...

1971-78 Honda CB550F / CB550K / CB500K Exhaust Stud Set

$34.95 USD

Restore secure and leak-free exhaust mounting on your vintage Honda with this premium Exhaust Stud Set. Designed for CB500K, CB550K, and CB550F models, this...

Honda CB550 CB500 CB400 CB350 CB100 chrome exhaust clamp 18231-323-000

Honda CB Chrome Exhaust Clamp ~ Replaces 18231-323-000

$24.95 USD

Replace your exhaust clamp with this Chrome Exhaust Clamp, 14-fin type. Center-to-center mounting hole diameter 55mm. Replaces OEM #18231-323-000 / #18231-323-010 / #18231-333-010.Key Features•...

Honda CB550 CB500 CB200 exhaust headpipe gaskets (pk 10) 18291-216-000

Honda CB Exhaust Headpipe Gaskets ~ (Pk/10) ~ Replaces 18291-216-000

$32.95 USD

Stock up on exhaust port gaskets for your CB500/CB550 or smaller twins with this 10-pack, replacing OEM #18291-216-000 / #18291-MN5-650.Key Features• Exhaust port gaskets,...

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1978 Honda CB550K · Gaskets & Mounting Hardware Buying guide

Count the seals before adding separate fastener hardware

A ten-gasket pack is a quantity option, while the stud set contains eight of each named fastener. Compare the existing clamps and their hole spacing separately before expecting any one purchase to cover all mounting components.

Parts to consider

Honda CB Exhaust Headpipe Gaskets ~ (Pk/10) ~ Replaces 18291-216-000

Pack of ten exhaust-port gasketsTen gaskets referencing 18291-216-000 and 18291-MN5-650. Choose this quantity for the planned work, rather than reading pack size as a motorcycle requirement.View part

1971-78 Honda CB550F / CB550K / CB500K Exhaust Stud Set

Eight-of-each exhaust fastener setPackage of eight exhaust studs, eight washers and eight nuts. Check the retained mounting parts and choose any port gaskets or clamps separately.View part

Honda CB Chrome Exhaust Clamp ~ Replaces 18231-323-000

Separate 14-fin chrome clampClamp referencing 18231-323-000, 18231-323-010 and 18231-333-010, with 55 mm mounting-hole center spacing. Compare the fitted clamp pattern.View part

Related parts: Individual port gasket choice

Use pack size as an ordering choice

The single gasket and ten-pack carry the same listed gasket references. Choose the quantity according to the work planned and any spares wanted, without treating ten pieces as a requirement. Keep that calculation separate from how many retained fasteners or clamps need replacement.

Check whether all named hardware is actually needed

The stud set supplies eight studs, eight washers and eight nuts as stated. Compare those contents with the retained exhaust mounting pieces before ordering, and assess the separate clamp and gasket products independently. The hardware description does not promise a complete pipe, silencer or mounting-system package.

Common questions

Do the gasket packs use different reference patterns?

The individual gasket and ten-pack list 18291-216-000 and 18291-MN5-650. Their stated purchase quantities differ; compare the planned gasket need rather than inferring a mechanical difference from the package size.

Will the stud kit also supply the finned clamps?

Its named contents are eight studs, eight washers and eight nuts. Finned clamps are listed separately, so compare their pattern and mounting spacing with the retained exhaust connection before adding them independently.

What does the clamp’s 55 mm measurement describe?

It is the center-to-center mounting-hole spacing, not a stated exhaust pipe diameter. Compare the fitted clamp’s mounting pattern and listed references before ordering; do not derive another dimension from that spacing.

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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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