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1981 Honda CB750K Exhaust Gaskets, Studs & Joint Parts

The 1981 Honda CB750K exhaust selection here focuses on sealing and hardware: exhaust port gaskets, a headpipe joint gasket, manifold studs, a stud-and-nut kit and a joint collar. Identify the piece on the installed exhaust before buying. A gasket and a mounting collar are different parts.

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Honda CB1100 CB1000 CB900 exhaust headpipe gasket (each) 18291-254-000

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000

$3.42 USD
17-2812
Replace one exhaust port gasket on your CB750 or big-bore DOHC CB with this Exhaust Port Gasket, 1 piece, replacing OEM #18291-254-000 / #18291-MM5-860....
Honda CB kick stand stopper rubber 95011-61000

Honda CB Kick Stand Stopper Rubber ~ Replaces 95011-61000

$2.95 USD
07-4624
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...
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Honda CB1100 CB1000 CB900 exhaust headpipe gasket (each) 18291-MM5-860

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-MM5-860

$6.84 USD
18-7013
Replace one cylinder-head-to-exhaust-headpipe gasket on your big-bore Honda with this Cylinder Head to Exhaust Headpipe Gasket, 1 piece, replacing OEM #18291-MM5-860. Exceptionally broad fitment...
Honda CB750C CB750K CB750L exhaust manifold stud 90035-425-000

1979-82 Honda CB750C / CB750K / CB750L Exhaust Manifold Stud ~ Replaces 90035-425-000

$4.45 USD
73-0988
Replace your exhaust manifold stud with this Exhaust Manifold Stud, 8mm x 55mm, replacing OEM #90035-425-000.Key Features• Exhaust manifold stud• 8mm x 55mm• Replaces...
Honda CB900C CB900F CB750K exhaust stud and flange nut set

1979-82 Honda CB900C / CB900F / CB750K Exhaust Stud & Flange Nut Set

$34.95 USD
73-1140
Restore your classic Honda’s exhaust system with this premium Exhaust Stud Set, engineered for durability and a precise fit. This 8-piece kit includes eight...
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Honda CB1100 CB1000 CB900 CB750 Honda exhaust pipe joint collar 18233-425-000

Honda CB1100 / CB1000 / CB900 / CB750 Genuine Honda Exhaust Pipe Joint Collar ~ OEM 18233-425-000

$24.95 USD
99-5455
Upgrade or restore your classic Honda motorcycle with this Exhaust Pipe Joint Collar — precision‑engineered and made in Japan. This genuine OEM part #18233‑425‑000...
Honda CB750K CB750L CB650 exhaust joint gasket for headpipe 18391-425-000

1979-82 Honda CB750K / CB750L / CB650 Exhaust Joint Gasket for Headpipe ~ Replaces 18391-425-000

$9.95 USD
17-4506
Replace your DOHC CB750 or 1979 CB650 exhaust joint gasket with this Exhaust Joint Gasket for Headpipe, replacing OEM #18391-425-000 / #18391-MJ4-000.Key Features• Exhaust...
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1981 Honda CB750K · Exhaust Buying guide

Identify the sealing piece or fastener that needs attention

Use the individual listing names, references and photographs to distinguish the exhaust port gasket from the headpipe joint gasket. Studs and the joint collar are hardware choices, with their own selling units and contents to check.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000 Individual exhaust port gasketOne exhaust port gasket referencing 18291-254-000 and 18291-MM5-860. Sold individually; order the quantity required.View part 1979-82 Honda CB750K / CB750L / CB650 Exhaust Joint Gasket for Headpipe ~ Replaces 18391-425-000 Headpipe joint gasketExhaust joint gasket listed for the 1981 CB750K, referencing 18391-425-000 and 18391-MJ4-000. Compare it with the joint being repaired.View part 1979-82 Honda CB900C / CB900F / CB750K Exhaust Stud & Flange Nut Set Exhaust stud and flange nut kitKit listed with exhaust studs and flange nuts. Confirm quantities before ordering: its stated total piece count conflicts with the individual contents.View part

Related parts: Honda exhaust pipe joint collar

Compare the two gasket listings by the part being replaced

The individual port gasket and the headpipe joint gasket have different reference numbers and product photographs. Match the old sealing piece with the relevant listing before deciding which is needed. Their presence under the same exhaust category does not make them interchangeable or establish every joint used by a custom system.

Resolve the stud kit’s contents before ordering it

The stud-and-nut listing calls the package an eight-piece kit but separately states eight studs and eight flange nuts. Confirm the supplied quantities with us before relying on the package count. The joint collar is another separate item sold per collar piece; it is not described as a gasket or full hardware kit here.

Common questions

Are complete exhaust systems being recommended in this guide?

The parts covered here are exhaust gaskets, studs and joint hardware. Identify the damaged piece on your fitted system and compare the product’s description and photographs before choosing a replacement gasket, stud kit or collar.

Why should I confirm the stud kit quantities?

Its description names an eight-piece kit and also lists eight studs plus eight flange nuts. Those statements do not give a consistent total. Confirm the package contents before ordering rather than assuming either count resolves the quantity of hardware supplied.

Is the joint collar another form of the headpipe gasket?

They are separate listings with different product names and references. The collar is sold per collar piece, while the headpipe joint gasket is a sealing-product listing. Compare the photographs and the part on the motorcycle before deciding which replacement is needed.

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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