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1984 Honda CB650SC Nighthawk Engine Service Parts

Before opening the engine on your 1984 CB650SC, separate the routine service order from the sealing work. A paper oil filter, individual valve-cover gasket and overhaul gasket set cover different needs. Use the repair plan to decide which parts are actually required.

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Honda CB1100 CB1000 CB900 CB750 CB650 oil filter 15410-426-010

Honda CB Oil Filter ~ Replaces 15410-426-010

$7.95 USD
15-0002
Service your classic Honda with this Stock-Type Oil Filter Element (paper filter), replacing OEM #15410-426-010 / #15410-422-004. Exceptionally broad fitment covering the full SOHC...
New
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...
Honda CB1100 CB1000 CB900 CB750 CB650 oil filter spring 15415-300-000

Honda CB Oil Filter Spring ~ Replaces 15415-300-000

$2.95 USD
15-0055
Replace the spring inside your oil filter housing with this Oil Filter Spring, replacing OEM #15415-300-000. Matches the fitment of our #15-0002 oil filter...
New
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Honda CB1100 CB1000 oil filter pack of 3 15410-426-010

Honda CB Oil Filter Pack of 3 (Volume Deal!) ~ Replaces 15410-426-010

$18.95 USD
15-0024
Keep your engine protected with this Pack of 3 Stock Type Oil Filter Elements, designed as direct replacements for the original Honda paper oil...
Honda CB Piston Pin Clips 15mm Pk/2 ~ Replaces 94601-15000

Honda CB Piston Pin Clips 15mm Pk/2 ~ Replaces 94601-15000

$1.95 USD
05-7201
Secure your piston pins with this 2-pack of 15mm Piston Pin Clips, Japanese made to superior quality and replacing OEM Ref. #94601-15000. Exceptionally broad...
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...
New
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Honda CB1100 CB1000 CB900 CB750 oil filter pack of 5 15410-426-010

Honda CB Oil Filter Pack of 5 (Best Deal!) ~ Replaces 15410-426-010

$27.95 USD
15-0025
Keep your engine properly protected with this Pack of 5 Stock Type Oil Filter Elements, designed as direct replacements for the original Honda paper...
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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 CB650SC CB550SC Athena overhaul gasket set

1983-85 Honda CB650SC / CB550SC Athena Overhaul Gasket Set

$229.95 USD
18-0108
Rebuild your CB550SC or CB650SC Nighthawk engine with this Athena Overhaul Engine Gasket Set. Athena of Italy is an original-equipment supplier to Yamaha, Honda,...
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Honda CB650SC CB550SC valve cover gasket 12391-ME5-306

1983-85 Honda CB650SC / CB550SC Valve Cover Gasket ~ Replaces 12391-ME5-306

$39.95 USD
12-1023
Replace your Nighthawk valve cover gasket with this Fibre-Type Valve Cover Gasket, replacing OEM #12391-ME5-306 / #12391-ME5-000. Fits the CB650SC (1983-85) and CB550SC (1983)...
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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1984 Honda CB650SC Nighthawk · Engine Service Parts Buying guide

Build the engine order from the service plan

The available engine parts support paper-filter service and later-Nighthawk gasket repairs. Choose according to the assembly being opened, and check individual parts against any package you already intend to buy.

Parts to consider

Honda CB Oil Filter ~ Replaces 15410-426-010 Paper oil filterStock-type paper element replacing references 15410-426-010 and 15410-422-004.View part 1983-85 Honda CB650SC / CB550SC Valve Cover Gasket ~ Replaces 12391-ME5-306 Valve-cover gasketReplacement gasket using references 12391-ME5-306 and 12391-ME5-000.View part 1983-85 Honda CB650SC / CB550SC Athena Overhaul Gasket Set Athena engine gasket setOverhaul engine gasket set listed for the 1983–85 CB650SC Nighthawk.View part

A small cover repair can stay focused

The individual valve-cover gasket uses references 12391-ME5-306 and 12391-ME5-000. Compare its outline with the correct cover. An overhaul set is a broader purchase whose contents should be checked against the entire disassembly plan.

Treat filter parts as an assembly

The replacement supplies one paper element; O-rings, spring and washer are separate. Inspect the retained housing pieces before ordering replacements. The drain fitting and its sealing washer are different service points with their own dimensions and application checks.

Engine Service Parts questions

When is the individual cover gasket the better starting point?

When the valve cover is the only joint being opened, compare that specific gasket first. For wider disassembly, confirm which joints the overhaul package covers before adding individual pieces.

What should I check if the valve-cover leak returns?

Inspect the cover for damage and check separate sealing washers, grommets and rubber plugs for wear or hardening. The individual replacement contains only the main valve-cover gasket. Follow the service-manual tightening sequence and torque because overtightening can damage the gasket or distort the cover.

Can I keep sound filter-housing hardware?

Inspect the existing spring, washer and seals against the service guidance and replace worn or damaged pieces as needed. The paper element includes none of those replacement components, so add them separately when required.

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