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1973 Honda CB450K Magnetic Drain Fitting & Angled Rotor Washer

Match oil-service purchases for your 1973 CB450K to the drain fitting or rotor component actually involved. The magnetic plug states thread and body measurements with an included O-ring. The angled washer has another reference and size label, requiring its own identification and contents check.

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Currently viewing Oil Filters, Drain Plugs, Oil Pump & Gauges

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Honda CB500 CB450 joker machine magnetic oil drain plug 90013-312-000

Honda CB Joker Machine Magnetic Oil Drain Plug ~ Replaces 90013-312-000

$64.95 USD
12-0108
Catch engine debris between oil changes with this Joker Machine Magnetic Oil Drain Plug with O-ring, replacing OEM #90013-312-000. High-quality 6061 billet aluminum body...
Honda CB500 CB450 CB360 special oil filter rotor washer 90481-292-000

Honda CB Special Oil Filter Rotor Washer ~ Replaces 90481-292-000

$9.46 USD
29-7034
Replace your oil filter rotor washer with this Special Angled Oil Filter Rotor Washer (16mm), replacing OEM #90481-292-000.Key Features• Special angled oil filter rotor...
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1973 Honda CB450K · Oil Filters, Drain Plugs, Oil Pump & Gauges Buying guide

Compare the drain fitting separately from the rotor component

The plug lists 90013-312-000, M33.7 × 1.5mm thread and 19mm socket use. Its body is stated at 45mm OD and 19mm clearance off the case. Rotor washer 90481-292-000 has a separate 16mm label.

Parts to consider

Honda CB Joker Machine Magnetic Oil Drain Plug ~ Replaces 90013-312-000 Joker magnetic plug including O-ring90013-312-000 replacement with M33.7 × 1.5mm thread, 19mm socket, 45mm OD and stated 19mm clearance off the case. Magnet described for steel-debris capture.View part Honda CB Special Oil Filter Rotor Washer ~ Replaces 90481-292-000 Separate angled rotor washer90481-292-000 replacement described as angled and 16mm. The label does not establish complete dimensions, supplied count or a rotor assembly included.View part

Use each plug measurement for its stated feature

The 19mm socket feature and 19mm case-clearance statement are separately listed, despite sharing a number. Compare access and the available space with the complete fitting information. The included O-ring is confirmed, but the description does not provide service torque or a full drawing proving clearance in an altered case arrangement.

Keep narrow magnetic capture separate from rotor service

The plug’s magnet is described as collecting steel debris from the sump. That function does not establish removal of every contaminant or replace the engine’s oil-filter service requirements. The angled rotor washer is a separate component, with no complete filter, rotor or oil-pump package stated as included.

Buying questions

What should I check before choosing the plug for an altered case arrangement?

Confirm the drain thread, outside diameter and space around the fitting, using the separately stated dimensions. The description gives M33.7 × 1.5mm thread, 45mm OD and 19mm case clearance. It does not verify every modified opening or surrounding component.

Does 16mm provide enough information to verify a different rotor washer?

It is the listing’s size label without a full dimensional drawing or explicit identification of each measurement. Compare reference 90481-292-000 and the removed angled component, then confirm missing details where needed. Do not assign an unstated inside diameter or installation orientation.

Is a sealing O-ring supplied with the magnetic drain plug?

Yes. The Joker Machine magnetic drain plug is described with an O-ring included. Compare its M33.7 × 1.5mm thread, 45mm outside diameter and stated 19mm case clearance with the fitted drain location before completing the order.

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