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1979 Honda CB125S Oil Drain Plug

The drain-plug choice pictured for the 1979 Honda CB125S replaces 92800-12000 and adds a magnetic feature. Start with the old plug and receiving opening. Diameter, thread pitch and the sealing arrangement each matter when planning this small service-parts purchase.

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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

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Honda CB900 CB750 CB700 CB650 drain plug washer

Honda CB900/CB750/CB700/CB650 Drain Plug Washer

$1.75 USD
15-0006
Fit the smaller 12mm drain plug washer with this 12mm x 18mm x 1mm Drain Plug Crush Washer. Broad fitment across the SOHC CB750,...
Honda CB900 CB750 CB700 CB650 CB550 magnetic oil drain plug

Honda CB Magnetic Oil Drain Plug

$12.95 USD
15-0016
Fit a 12mm magnetic drain plug with this Magnetic Oil Drain Plug, 12mm diameter x M1.5, replacing OEM #92800-12000. Broad fitment across the SOHC...
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Honda CB750 CB700 performance magnetic oil drain plug joker machine

Honda CB Performance Magnetic Oil Drain Plug ~ Joker Machine

$49.95 USD
73-1074
Catch metal debris from your engine with this Joker Machine Brand Custom Performance Magnetic Oil Drain Plug, 12mm dia x M1.5, OEM #92800-12000.The plug...
Honda CB125 CB100 oil pump gasket 15126-107-020

Honda CB125 / CB100 Oil Pump Gasket ~ Replaces 15126-107-020

$2.95 USD
73-1196
Ensure a secure, leak-free seal during your engine rebuild or maintenance with this Oil Pump Gasket. Precisely engineered to replace OEM# 15126-107-020, this gasket...
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Honda CB125 CB100 Honda oil filter screen spring 15426-107-000

Honda CB125 / CB100 Genuine Honda Oil Filter Screen Spring ~ OEM 15426-107-000

$25.00 USD
99-5044
Upgrade or restore your classic Honda motorcycle with this Genuine Honda Oil Filter Screen Spring — precision‑engineered and quality made in Japan. This authentic...
Honda CB125 CB100 oil filter cap gasket 15459-KT0-710

Honda CB125 / CB100 Oil Filter Cap Gasket ~ Replaces 15459-KT0-710

$5.95 USD
73-1197
Maintain proper oil system sealing with this high-quality Oil Filter Cap Gasket. This direct replacement meets OEM specifications to ensure a leak-free seal when...
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1979 Honda CB125S · Oil Drain Plug Buying guide

Compare the complete drain connection before ordering

A 12 mm diameter and 1.5 mm pitch identify the replacement thread. Check the old connection and its condition, then resolve any additional sealing parts required for the service.

Parts to consider

Honda CB Magnetic Oil Drain Plug Magnetic drain plug12 mm diameter, 1.5 mm thread pitch; replaces 92800-12000.View part

Read diameter and pitch together

The 12 mm figure describes the plug diameter; 1.5 mm describes its thread pitch. A connection must match both. If previous repairs have changed the opening, establish its actual thread before selecting a replacement by motorcycle year or old part appearance.

Plan the seal at the same time

Check the sealing arrangement required at the drain point before finishing the order. The plug description does not specify an included washer. Identify the needed seal from the actual connection and service information so that an unstated package item does not delay the work.

Buying questions

Is a sealing washer included with the plug?

An included washer is not specified in the product description. Confirm the sealing part needed for the actual drain connection before completing the order; the photograph should not be used as the package-contents specification.

Does the magnet collect every type of wear material?

The supported feature is steel-debris capture. Do not assume that it collects all materials or that its appearance alone identifies an engine problem. Follow the service guidance for inspecting the oil and any debris.

Can I select it for an altered drain connection?

First identify the actual diameter, pitch and sealing arrangement of the altered opening. The replacement reference and motorcycle application cannot establish the dimensions of a previous thread repair or a different fitted engine case.

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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