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1986 Honda CB450SC Nighthawk Filter Hardware & Pressure Switch Fit

Lay out the filter hardware during service on your 1986 CB450SC Nighthawk and decide which retained pieces need replacement. The element, filter washer, housing bolt and drain washer have their own references or dimensions. A warning-switch order needs a separate pressure and wiring assessment before a part is chosen.

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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 CB1100 CB1000 CB700 CB650 CB550 oil pressure switch

Honda CB Oil Pressure Switch ~ Genuine Honda OEM

$69.95 USD
99-5094
Upgrade or restore your classic Honda motorcycle with this Genuine Honda Oil Pressure Switch — precision‑engineered and made in Japan. This authentic replacement part...
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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1986 Honda CB450SC Nighthawk · Oil Service Buying guide

Match the element and its retained service hardware

The paper element has three listed Honda replacement numbers. Its 15414-300-000 washer can be purchased singly or in a five-pack, while the housing bolt identifies 15420-413-000. The drain washer measures 14 mm ID, 20 mm OD and 1 mm thick; switch selection depends on the original terminal and sealing arrangement.

Parts to consider

1978-86 Honda CB450 / CB400 Oil Filter ~ Replaces 15412-413-005 Paper element with three Honda referencesOne element is supplied for one motorcycle, replacing 15412-413-005, 154A1-413-005 or 154A1-MA6-000. Check the actual housing and removed element against the listed application.View part Honda CB Oil Filter Washer ~ Each ~ Replaces 15414-300-000 One dimensioned filter-bolt washerThe individual 15414-300-000 washer measures approximately 30 mm OD, 20.5 mm ID and 0.5 mm thick. One is used at the specified filter-bolt position.View part Honda CB Oil Pressure Switch ~ Genuine Honda OEM Genuine Honda pressure warning switchOne switch is supplied for one compatible engine. Listed references include 35500-MJ4-024; verify the reference, terminal and sealing arrangement and investigate a continuing warning before replacement.View part

Related parts: M14 × 1.5 magnetic drain-plug choice · Single 14 × 20 × 1 mm drain washer · Separate 15420-413-000 housing bolt

Separate the drain washer from filter-assembly hardware

The drain washer and 15414-300-000 filter washer have different dimensions and named locations. Count one drain washer for the engine plug and renew it when the plug is removed. At the filter assembly, use the Honda-specified washer position and bolt tightening procedure; a damaged washer or excess torque can contribute to leakage or hardware damage.

Confirm exactly what the bolt and magnetic plug orders supply

The filter bolt is offered as a separate 15420-413-000 replacement without a written extra-hardware inventory. The magnetic plug specifies M14 × 1.5 and 92800-14000, but its photographed loose washer is not promised as included. Ask about those supply details while comparing the repair’s retained pieces.

Oil Service purchase questions

What information should accompany a filter-bolt replacement request?

Provide Honda reference 15420-413-000 and the fitted housing details, then confirm the supplied hardware. The bolt is offered as a separate replacement without specified accompanying washers or other pieces. Inspect and list the retained parts needed for the repair before ordering.

Which drain-washer checks matter if an earlier owner changed the plug?

Compare the actual plug shank and sealing-seat requirements with 14 mm inside diameter, 20 mm outside diameter and 1 mm thickness. The listed washer supplies one for one compatible engine drain plug and calls for replacement whenever the plug is removed.

What needs checking before a continuing oil-pressure warning leads to a switch order?

Stop the engine and check oil level, switch wiring and actual oil pressure with the Honda test procedure. A new switch cannot correct a blocked oil passage, worn pump or bearing-clearance problem. Confirm the original switch match only after establishing the cause.

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