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1978 Honda CB400TII Hawk II Oil Filters & Drain Plugs

An oil-service order for the Hawk II starts with its stock-type paper element. Check the retaining bolt and drain plug while the system is apart, and distinguish damaged hardware from a filter that simply needs routine replacement at the service interval.

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

Honda motorcycle parts

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Honda CB1100 CB1000 CB900 CB750 oil filter washer set 15414-300-000

Honda CB Oil Filter Washer Set ~ Replaces 15414-300-000

$7.95 USD
15-0039
Fit oil filter washers with this Oil Filter Washer 5-pack, replacing OEM #15414-300-000. Used with original-type paper oil filter elements. Exceptionally broad fitment across...
Honda CB1100 CB1000 CB900 CB750 oil filter washer each 15414-300-000

Honda CB Oil Filter Washer ~ Each ~ Replaces 15414-300-000

$2.95 USD
15-0042
Oil filter washer designed to replace the original Honda component, matching OEM reference 15414-300-000. Used to create a proper seal at the oil filter...
Honda CB1100 CB1000 CB900 CB750 CB450 magnetic oil drain plug

Honda CB Magnetic Oil Drain Plug

$10.95 USD
15-0014
Catch steel debris on oil changes with this Magnetic Oil Drain Plug, 14mm diameter x M1.5, replacing OEM #92800-14000. Fits the CB750A Hondamatic, full...
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Honda CB1100 CB1000 CB900 CB750 drain plug washer

Honda CB1100/CB1000/CB900/CB750 Drain Plug Washer

$1.75 USD
15-0000
Replace your oil drain plug washer with this 14mm x 20mm x 1mm Drain Plug Washer. Broad fitment across the CB750A Hondamatic, the full...
Honda CB450 CB400 oil filter 15412-413-005

1978-86 Honda CB450 / CB400 Oil Filter ~ Replaces 15412-413-005

$8.95 USD
15-0007
Service your CB400 or CB450 with this Stock-Type Oil Filter Element (paper filter), replacing OEM #15412-413-005 / #154A1-413-005 / #154A1-MA6-000.Key Features• Stock-type paper oil...
Honda CB450 CB400 oil filter bolt 15420-413-000

1978-86 Honda CB450 / CB400 Oil Filter Bolt ~ Replaces 15420-413-000

$28.95 USD
15-3021
Fit the CB400 or CB450 oil filter bolt with this Oil Filter Bolt, replacing OEM #15420-413-000.Key Features• Oil filter bolt• Replaces OEM #15420-413-000• Honda...
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1978 Honda CB400TII Hawk II · Oil Service Buying guide

Check the filter and its retaining hardware

The paper element, oil-filter bolt and sump drain plug are separate service items. Identify the part you need and inspect its mating surfaces before choosing a replacement.

Parts to consider

1978-86 Honda CB450 / CB400 Oil Filter ~ Replaces 15412-413-005 Paper oil filterStock-type paper element for the Hawk II oil-filter housing, replacing reference 15412-413-005.View part Honda CB Magnetic Oil Drain Plug Magnetic drain plugM14 × 1.5 magnetic drain plug for the listed Hawk II application; compare the existing sump threads before fitting.View part 1978-86 Honda CB450 / CB400 Oil Filter Bolt ~ Replaces 15420-413-000 Oil-filter retaining boltReplacement oil-filter bolt corresponding to reference 15420-413-000, for the original-type filter arrangement.View part

Keep the filter hardware in order

Lay out the filter assembly as it comes apart and compare it with the Honda manual. The retaining bolt and associated pieces must return to their proper positions. Replace damaged hardware rather than forcing a worn bolt or compensating with extra tightening.

Inspect what the drain plug reveals

The magnetic plug can collect ferrous debris, but its condition does not replace normal oil and filter inspection. Compare the plug threads and seating face before fitting. Use the correct sealing arrangement and the manual’s procedure when returning the motorcycle to service.

Common questions

Is this a paper element for the original housing?

Yes. The featured filter is a stock-type paper element for the listed CB400TII application. Compare the existing housing and element if the engine or oil-filter arrangement has been changed.

What thread does the magnetic drain plug use?

It uses M14 × 1.5. Confirm the existing sump threads are the correct size and undamaged before fitting, particularly on an engine with a repaired drain opening.

Can a new filter bolt fix a leaking housing?

Only if the bolt is the cause. Check the housing, threads, sealing pieces and seating surfaces as well. Replace the defective part and follow the manual’s assembly instructions rather than overtightening the bolt.

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