VintageCB750 Supplying CB Riders Since 2010

About Us Why Us? Reviews Shipping Info Returns Contact Us
Wish Lists
0 My Cart

Your cart is currently empty.

Browse all parts
Total (USD): $0.00
View cart
Menu
Search
Wish
Cart 0
My motorcycle Choose your Honda CB model

Search parts

Searching all Honda CB parts

Example: brake pads or oil filter.

1968 Honda CB450K Drain Plug & Oil Rotor Washer

Oil-service hardware for a 1968 Honda CB450K includes two very different parts: a magnetic drain plug and a special angled rotor washer. Identify the service location first, then compare the plug dimensions or washer profile rather than choosing by the broad category name.

Close ×
Your saved bike Choose your Honda CB model

Shop By Category

Most orders ship same or next business day Fitment guarantee Listed for your exact model and year? We’ll make it right if it doesn’t fit as described. Mechanic-backed support Ask our team for help choosing the right Honda CB part.
Currently viewing Oil Filters, Drain Plugs, Oil Pump & Gauges

Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

New
Sold out
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...
compare

1968 Honda CB450K · Oil Filters, Drain Plugs, Oil Pump & Gauges Buying guide

Match hardware to the service location

The Joker Machine plug has an O-ring, M33.7 × 1.5mm threads and specified case clearance. The separate 16mm angled oil-filter rotor washer references Honda 90481-292-000. Neither product is an oil pump or a filter assembly.

Parts to consider

Honda CB Joker Machine Magnetic Oil Drain Plug ~ Replaces 90013-312-000 Joker Machine magnetic drain plugBillet aluminum plug with O-ring and a magnet intended to collect steel debris. Listed installation uses a 19mm socket.View part Honda CB Special Oil Filter Rotor Washer ~ Replaces 90481-292-000 Special angled oil-filter rotor washer16mm angled rotor washer listed against Honda 90481-292-000. Compare the special profile with the part removed.View part

Check the complete plug envelope

A matching thread is only one part of the drain-plug comparison. The specified 45mm outside diameter and 19mm distance from the case also matter when checking surrounding space. Compare those dimensions on the fitted engine before choosing the replacement.

Treat the rotor washer as specific hardware

The washer is described as special and angled, so its profile needs attention as well as its reference. The listing does not provide installation orientation. Keep the removed part identified and use the engine service information to confirm the correct arrangement rather than substituting a generic flat washer.

Buying questions

Which drain-plug dimensions should I compare before ordering?

Check the M33.7 × 1.5mm thread, 45mm outside diameter and stated 19mm clearance off the case. The O-ring is included. Compare those dimensions with the drain and surrounding space on the engine actually fitted.

Is the plug’s sealing O-ring included?

The plug description includes an O-ring. Compare the complete plug assembly, listed thread and clearance with the fitted engine. Do not assume the O-ring supplied for this plug is a separate seal for another engine opening.

Can I select the rotor washer from its 16mm size alone?

Also compare the angled profile and Honda 90481-292-000 reference. The listing does not define every dimension or orientation, so the single size is not enough to establish an equivalent generic washer. Match the removed part and service arrangement.

Not sure which part you need?

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

Ask a fitment question
Parts categories for 1968 Honda CB450K

Your cart

×