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1971 Honda CB350K3 Steering Bearings & Hardware

The K3 steering parts here include a tapered-roller bearing conversion and the stem washer. Honda did not fit the K3 with the earlier steering damper, so identify bearing or hardware wear directly rather than planning an original damper rebuild.

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Honda CB1000 CB900 CB750 CB550 chrome steering stem nut 90304-415-000

Honda CB Chrome Steering Stem Nut ~ Replaces 90304-415-000

$9.95 USD
49-0786
Replace your steering stem nut with this Chrome Steering Stem Nut, hex nut size 30mm, replacing OEM #90304-415-000.Sold each. We also offer the matching...
Honda CB1000 CB900 CB750 CB550 steering stem washer 90503-283-000

Honda CB Steering Stem Washer ~ Replaces 90503-283-000

$3.50 USD
49-0787
Replace your steering stem washer with this Chrome Steering Stem Washer, replacing OEM #90503-283-000.Sold each, order the quantity you require.Key Features• Chrome steering stem...
Honda CB750 CB650 CB550 CB450 CB400 steering bearing kit (2)

Honda CB Steering Bearing Kit (2)

$69.95 USD
28-2011
Upgrade your steering bearings with this Steering Bearing Kit. Tapered roller steering bearing conversion kit, superior to OEM quality with 10X the contact area...
Honda CB750 CB650 CB550 CB450 CB400 steering bearing kit

Honda CB Steering Bearing Kit

$69.95 USD
28-2011
Upgrade your steering bearings with this Steering Bearing Kit. Tapered roller steering bearing conversion kit, superior to OEM quality with 10X the contact area...
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Honda CB750 CB550 black steering stem nut joker machine 90304-415-000

Honda CB Black Steering Stem Nut ~ Joker Machine ~ Replaces 90304-415-000

$47.95 USD
12-0073
Dress up your steering stem with this Joker Machine Black Steering Stem Nut, 30mm hex, replacing OEM #90304-415-000. High-quality CNC-machined and made in the...
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1971 Honda CB350K3 · Steering Bearings & Hardware Buying guide

Choose steering bearings without assuming stem interchange

The conversion kit includes upper and lower tapered bearing races. The separate washer references 90503-283-000. A changed steering stem or upper bridge needs its own compatibility check before either is ordered.

Parts to consider

Honda CB Steering Bearing Kit Tapered steering bearing kitTapered-roller conversion kit with upper and lower races, made in Japan.View part Honda CB Steering Stem Washer ~ Replaces 90503-283-000 Steering stem washerChrome washer replacing 90503-283-000, sold individually.View part

Treat the bearing set as a conversion

The featured kit replaces the original bearing arrangement with tapered rollers and includes upper and lower races. Use the kit’s instructions and correct service information for assembly and adjustment. Do not carry an old adjustment setting across simply because the bearings fit into the same steering head.

Check the upper hardware independently

The washer is sold individually and references the K3’s 90503-283-000 part. A stem nut must also match the thread and fitted stem; its external hex size is not sufficient proof. Check modified stems and upper bridges before combining pieces from different motorcycles.

Buying questions

Is this an original loose-ball bearing kit?

No. It is a tapered-roller conversion kit with upper and lower races. Choose it with the understanding that the bearing arrangement changes and the supplied instructions govern the conversion details.

How many stem washers are required?

Honda lists one 90503-283-000 washer for the original K3 steering assembly, and the replacement is sold individually. Confirm the stack of parts if a different stem or upper bridge has been fitted.

Should I add steering-damper parts during this work?

The K3 has no original steering damper. If a previous owner added one, identify that separate assembly and its mounting arrangement before ordering anything for it.

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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