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1972 Honda CL450K5 Drain Plug & Rotor Washer

Oil-service hardware for a 1972 Honda CL450K5 calls for two different checks here. The magnetic plug needs room around the case opening and socket access; the rotor washer must match its shaped retaining role rather than simply its nominal size.

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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 CL450K5 · Drain Plug & Rotor Washer Buying guide

Identify the sealing opening or retaining position

Choose the plug by its thread, outside dimensions and included O-ring. Choose the rotor washer by its angled form and reference, keeping installation specifications with the correct engine service documentation.

Parts to consider

Honda CB Joker Machine Magnetic Oil Drain Plug ~ Replaces 90013-312-000 Joker Machine magnetic drain plugSupplied with an O-ring. Product dimensions include M33.7 × 1.5 mm threads and a 45 mm outside diameter.View part Honda CB Special Oil Filter Rotor Washer ~ Replaces 90481-292-000 Special angled rotor washer16 mm oil-filter rotor washer, identified by replacement reference 90481-292-000.View part

Check the space around the plug

The billet plug’s dimensions describe the replacement, including how far it stands from the case. Consider adjacent equipment and usable tool space as well as the thread match. Its supplied O-ring should also be accounted for when assembling the order.

Use the correct shaped washer

Reference 90481-292-000 identifies the special 16 mm angled rotor washer. Do not substitute an ordinary washer solely because its nominal size appears similar. Confirm the assembly identity and use its service documentation for orientation and tightening rather than deriving those details from product size.

Buying questions

Will I need to source the drain plug’s O-ring separately?

The offered plug includes an O-ring. That answers the stated package requirement, but you should still verify the case opening, access and surrounding clearance before deciding that this custom plug suits the engine.

What can the magnet’s steel-debris feature tell me?

It describes what the magnet is intended to capture. It does not establish the engine’s condition or justify a different maintenance schedule; unusual debris and service intervals require the appropriate inspection and documentation.

Can I use the washer reference to determine its fitting direction?

The reference helps identify the part, while the description only supplies its angled form and 16 mm size. Obtain the fitting orientation and tightening requirements from the correct rotor service instructions.

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Send your model and year, plus photos of your existing part and any changes to the original setup.

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