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1986 Honda CB450SC Nighthawk Engine Service Parts Comparison

Use the repair location to narrow an engine order for your 1986 CB450SC Nighthawk. A cover opened for service needs a different set of comparisons from a filter change or a warning-light fault. Start with the fitted assembly, then use the named Honda references and written package contents to select the required pieces.

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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 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...
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 CB750 CB650 CB550 front sprocket lock plate set 23811-292-000

Honda CB Front Sprocket Lock Plate Set ~ Replaces 23811-292-000

$5.95 USD
49-0782
Replace your front sprocket lock plate with this Front Sprocket Lock Plate with 2 lock plate bolts. Always good to replace these when installing...
Honda CB1100 CB1000 tach drive oil seal 4.8 x 14.5 x 5 91256-425-003

Honda CB Tach Drive Oil Seal ~ 4.8 x 14.5 x 5 ~ Replaces 91256-425-003

$4.95 USD
73-0964
Replace your tach drive oil seal with this Tach Drive Oil Seal, 4.8 x 14.5 x 5, replacing OEM #91256-425-003. High-quality, made in Japan.Key...
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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...
New
Honda CB750 CB550 CB500 rear shock swingarm bushing 40548-268-000

Honda CB Rear Shock Swingarm Bushing ~ Replaces 40548-268-000

$6.20 USD
28-6918
Rear shock swingarm bushing designed to replace the original Honda component, matching OEM reference 40548-268-000. Fits between the shock and swingarm to provide proper...
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 CB750 CB450 CB400 CB350 CL450K0 steel front sprocket 17 tooth

Honda CB Steel Front Sprocket ~ 17 Tooth

$23.45 USD
99-4817
Front sprocket designed for a range of Honda models. A critical drivetrain component, it transfers power from the engine to the chain, making proper...
Honda CB750 CB450 CB400 CB360 CB77 valve guide clip 12211-250-310

Honda CB Valve Guide Clip ~ Replaces 12211-250-310

$1.95 USD
73-0939
Replace your valve guide clip with this Valve Guide Clip, replacing OEM #12211-250-310.Sold each, order the quantity you require.Key Features• Valve guide clip• Replaces...
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...
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Honda CB450 CB400 valve cover gasket 12328-413-830

1978-86 Honda CB450 / CB400 Valve Cover Gasket ~ Replaces 12328-413-830

$31.95 USD
12-1014
Replace your CB400 or CB450 valve cover gasket with this Athena Brand Valve Cover Gasket, replacing OEM #12328-413-830. Fits the full CB400A/TI/TII/T range plus...
Honda CB400 CB450 silent cam chain a 412H x 110 14401-MR4-901

Honda CB400 / CB450 Silent Cam Chain A 412H x 110

$89.95 USD
01-0206
Keep your CB400 or CB450 running quiet and in spec with this Silent Cam Chain A, 412H x 110 links. High-quality construction made in...
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Honda CB450SC CB450TC Athena overhaul gasket set

1982-86 Honda CB450SC / CB450TC Athena Overhaul Gasket Set

$99.95 USD
18-0104
Rebuild your CB450T or CB450SC engine with this Athena Overhaul Engine Gasket Set. Athena of Italy is an original-equipment supplier to Yamaha, Honda, Kawasaki,...
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...
Honda CB400 CB450 CB125 valve stem seal 12208-413-003

Honda CB400 / CB450 / CB125 Valve Stem Seal

$3.10 USD
01-0128
Stop top-end oil loss with this Valve Stem Seal, a replacement for OEM #12208-413-003 / #12209-KL4-005 / #12209-428-003. Fits a range of smaller-displacement Hondas,...
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1986 Honda CB450SC Nighthawk · Engine Buying guide

Connect the fitted assembly to a specific purchase

The main cover gasket, paper filter and genuine Honda pressure switch are separate service choices with explicit single-piece supply. The overhaul gasket set needs a contents confirmation for deeper work. A photograph can help identify a part’s shape, but it cannot settle unlisted hardware or gasket inclusions.

Parts to consider

1978-86 Honda CB450 / CB400 Valve Cover Gasket ~ Replaces 12328-413-830 Main cover gasket for the identified jointThe Athena gasket replaces 12328-413-830, with one supplied and one used per compatible engine. Check any separate sealing pieces shown for the exact model when planning the cover work.View part 1978-86 Honda CB450 / CB400 Oil Filter ~ Replaces 15412-413-005 One stock-type paper filter elementThe element replaces 15412-413-005, 154A1-413-005 or 154A1-MA6-000. One is supplied for one motorcycle; compare those references with the filter arrangement actually fitted.View part Honda CB Oil Pressure Switch ~ Genuine Honda OEM Genuine Honda warning-switch replacementThis Japan-made switch lists the 1986 application and five Honda replacement references. Its fit depends on the matching terminal and sealing arrangement as well as the reference.View part

Related parts: Confirm the broader gasket-set contents · Five washers for the paper-filter assembly · Exact 412H silent-chain specification

Establish whether the warning indicates a switch problem

If the oil-pressure lamp remains illuminated, stop the engine and verify the oil level, wiring and actual pressure with the Honda test procedure. A new switch does not repair a blocked oil passage, worn pump or bearing-clearance problem. That assessment should guide the purchase before the warning circuit is treated as the sole fault.

Keep written supply separate from a visual parts layout

The main cover gasket and filter have explicit quantities, while the Athena overhaul set does not list every included piece. Compare an itemized contents confirmation with the planned joints before relying on it. The switch photograph also shows a loose screw, but the written supply establishes one switch rather than promising that extra fastener.

Engine purchase questions

Which Honda references help identify a replacement for the warning switch?

Compare the removed switch with 35500-MJ4-024, 35500-MB9-004, 35500-MJ4-014, 35500-MJ0-004 or 35500-MJ4-004. Also match its electrical terminal and sealing arrangement. These listed references give the supplier a concrete comparison when the fitted switch’s history is uncertain.

How should I choose between the single filter washer and the five-pack?

The single 15414-300-000 listing supplies one washer for the specified filter-bolt location. Choose it for one required replacement, or choose the five-pack for several required replacements and planned spares. Base the quantity on the pieces you need to replace or retain.

What should I confirm when adding the overhaul set to a larger repair order?

Request its included gasket and seal list, then compare that list with every joint being opened. The Athena set names the CB450SC application but does not publish itemized contents, so any required pieces should be confirmed before the order is finalized.

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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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