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1985 Honda CB450SC Nighthawk Fork Oil Seal and Dust Boot Package Decisions

The 1985 Honda CB450SC Nighthawk fork choices separate dimensioned oil seals from the protective dust boots. Each package supplies two for its compatible application. Identify the fitted fork arrangement and the areas needing service before buying both, especially when the front end has been changed or leakage remains under old boots.

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Honda CB450 CB400 CB360 fork seals

Honda CB450 / CB400 / CB360 Fork Seals

$21.95 USD
27-1019
Replace your CB400 or CB360 fork seals with this Fork Seal Set, 33 x 46 x 11mm. Made in Japan by OEM supplier.Key Features•...
Honda CB450 CB400 CB360 CL360K0 fork dust boot set 91254-413-881

Honda CB Fork Dust Boot Set ~ Replaces 91254-413-881

$15.95 USD
73-0189
Refresh your fork seal dust boots with this Fork Seal Dust Boots Set of 2. 33mm size. Replaces OEM #91254-413-881.Key Features• Fork seal dust...
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1985 Honda CB450SC Nighthawk · Fork Seal and Dust Protection Buying guide

Plan the sealing and protective pieces as separate packages

The oil-seal set measures 33 x 46 x 11 mm and comes from a Japanese OEM supplier. The separate dust-boot pair identifies 33 mm and Honda 91254-413-881. Both list the 1985 application, but those descriptions do not establish a replacement-fork fit from one shared 33 mm measurement alone.

Parts to consider

Honda CB450 / CB400 / CB360 Fork Seals Both-leg oil-seal setTwo 33 x 46 x 11 mm seals, made in Japan by an OEM supplier.View part Honda CB Fork Dust Boot Set ~ Replaces 91254-413-881 Pair of referenced 33 mm dust bootsTwo 91254-413-881 replacements for the compatible left and right fork legs.View part

Count each two-piece package only once for its application

The written contents say two oil seals and two dust boots in their respective packages. A complete both-leg renewal of those matched parts therefore calls for one of each required package. Keep the oil-seal and boot purchases separate rather than assuming one listing supplies the other product.

Use the boot inspection guidance to define the service work

Inspect the tubes, oil seals, retaining clips and seal seats, and address leakage first. Use those retained-part findings to decide what service pieces are required. The supplied parts descriptions give no fork-oil grade, quantity or numerical procedure.

Common questions

How should I count packages if both legs need matched seals and boots?

One oil-seal package contains two, and one dust-boot package also contains two for its stated application. Order one of each required package for both compatible legs. Check the full seal dimensions and separate boot reference before using those package quantities.

What inspection checks matter when a worn boot is accompanied by fork leakage?

The dust-boot guidance identifies fork tubes, oil seals, retaining clips and seal seats for inspection, with leakage repaired before new boots are fitted. Use those checks to define the service order; replacing protective boots does not establish that the underlying sealing work is complete.

Is the shared 33 mm description enough to select these parts for swapped forks?

Confirm the replacement fork’s complete requirements. Oil seals publish 33 x 46 x 11 mm, while the boots name a 33 mm arrangement and 91254-413-881. One shared measurement does not establish compatibility of both products with an unidentified donor fork.

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