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1972 Honda CB450K Drain Plug Dimensions & Rotor Washer Identity

Separate the drain opening from the filter rotor component when buying oil-service parts for your 1972 CB450K. The Joker plug supplies an O-ring and specific body dimensions. The angled rotor washer has its own reference and size label, requiring a different component 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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1972 Honda CB450K · Oil Filters, Drain Plugs, Oil Pump & Gauges Buying guide

Match the drain fitting and rotor washer independently

The drain plug lists M33.7 × 1.5mm thread, 19mm socket use and 45mm outside diameter with stated 19mm case clearance. The rotor washer lists 90481-292-000 and a 16mm size label without complete dimensions.

Parts to consider

Honda CB Joker Machine Magnetic Oil Drain Plug ~ Replaces 90013-312-000 Magnetic drain plug with O-ringJoker Machine plug replacing 90013-312-000. M33.7 × 1.5mm thread, 19mm socket, 45mm OD and stated 19mm clearance off the case; O-ring included.View part Honda CB Special Oil Filter Rotor Washer ~ Replaces 90481-292-000 Angled oil-filter rotor washerWasher referencing 90481-292-000, described as angled and 16mm. Compare the actual rotor component rather than treating this as a complete filter assembly.View part

Check the dimensions before choosing the drain plug

The thread, socket size, outside diameter and stated clearance describe different features of the Joker plug. Compare the installed opening and nearby space using those separate details. The included O-ring belongs to this purchase; dimensions do not establish a tightening torque or guarantee room in every altered arrangement.

Keep the magnet’s role separate from oil filtration

The drain plug description states that its magnet captures steel debris from the sump. That narrow function does not establish capture of every contaminant or replacement of the engine’s oil-filter service. The rotor washer is another component, with no complete rotor, filter or pump stated as supplied.

Buying questions

Does the 19mm socket measurement define the plug’s case clearance?

The description separately states 19mm socket use and 19mm clearance off the case, alongside 45mm outside diameter. Keep those features distinct when checking access and surrounding space. Their equal number does not make the socket dimension a complete clearance drawing.

What information remains unconfirmed for the angled rotor washer?

The listing identifies 90481-292-000 and a 16mm size label, without a complete dimensional drawing, orientation procedure or clear supplied count. Compare the removed component and confirm any missing specification before ordering for a changed rotor arrangement.

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

Yes, the Joker Machine plug includes its O-ring. Check the M33.7 × 1.5mm thread, 45mm outside diameter and stated 19mm case clearance against the fitted engine. The angled rotor washer is a separate component with its own reference.

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