Honda CB500K Four Parts | Carb, Gasket & Brake Repairs – Tagged "Engine"– Page 2

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Honda Motorcycle ATV Tappet Adjuster Screw and Nut Set 90012-426-000

Honda Motorcycle ATV Tappet Adjuster Screw & Nut Set - Replaces Honda OEM 90012-426-000

$4.29

49-0784

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Honda Motorcycle ATV Tappet Adjuster Screw & Nut Set - Replaces Honda OEM 90012-426-000. This nut fastens the specified component onto its matching threaded...

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Honda Yamaha Suzuki Motorcycle Gear Change Lever

$23.61

Honda Yamaha Suzuki Motorcycle Gear Change Lever. This gearshift lever clamps to the shift shaft so your foot can select transmission gears. Compare shift-shaft...

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Honda CB750 CB550 CB500 CB650 Cylinder Sleeve O-Ring Gasket Set 91304-286-000

Honda CB750 CB550 CB500 CB650 Cylinder Sleeve O-Ring Gasket Set - Replaces Honda OEM 91304-286-000

$4.07

Honda CB750 CB550 CB500 CB650 Cylinder Sleeve O-Ring Gasket Set - Replaces Honda OEM 91304-286-000. This cylinder-sleeve O-ring set seals the sleeves at the...

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Honda CB550F CB550K CB500K Cylinder Head Cover Gasket 12391-323-000

Honda CB550F CB550K CB500K Cylinder Head Cover Gasket - Replaces Honda OEM 12391-323-000

$41.37

Honda CB550F CB550K CB500K Cylinder Head Cover Gasket - Replaces Honda OEM 12391-323-000. This valve cover gasket seals the cylinder-head cover to the top...

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Honda CB550F CB550K CB500K Cylinder Head Gasket 12251-374-306

Honda CB550F CB550K CB500K Cylinder Head Gasket - Replaces Honda OEM 12251-374-306

$66.53

Honda CB550F CB550K CB500K Cylinder Head Gasket - Replaces Honda OEM 12251-374-306. This cylinder head gasket seals the joint between the cylinder and cylinder...

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Honda CB550 CB500 CB650 Cylinder Base Gasket 12191-426-306

Honda CB550 CB500 CB650 Cylinder Base Gasket - Replaces Honda OEM 12191-426-306

$17.46

Honda CB550 CB500 CB650 Cylinder Base Gasket - Replaces Honda OEM 12191-426-306. This cylinder base gasket seals the joint between the cylinder block and...

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1971-73 Honda CB500K Overhaul Gasket Set

$131.35

1971-73 Honda CB500K Overhaul Gasket Set. This complete engine gasket set supplies the gaskets and seals needed for a major teardown, overhaul, or full...

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Honda CB550F CB550K CB500K Gasket Set (Top End Set Only)

$140.53

Honda CB550F CB550K CB500K Gasket Set (Top End Set Only). This top-end gasket set supplies the upper-engine gaskets and seals used when servicing the...

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1971-73 Honda CB500K Athena Engine Gasket Set

$220.45

1971-73 Honda CB500K Athena Engine Gasket Set. This engine gasket set supplies the gaskets and seals needed to reseal the engine during teardown or...

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Honda Kawasaki Suzuki Vintage Japanese Motorcycle Oil Drain Plug 12mm 92800-12000

Vintage Japanese Motorcycle Oil Drain Plug - 12mm - Replaces Honda OEM 92800-12000

$11.77

15-0016

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Vintage Japanese Motorcycle Oil Drain Plug - 12mm - Replaces Honda OEM 92800-12000. This oil drain plug seals the engine oil-drain opening and allows...

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Honda CB750 CB550 CB500 CB400 Chrome Points Cover 30370-300-020

Honda CB750 CB550 CB500 CB400 Chrome Points Cover - Replaces Honda OEM 30370-300-020

$43.73

Honda CB750 CB550 CB500 CB400 Chrome Points Cover - Replaces Honda OEM 30370-300-020. This points cover protects the ignition points cavity and finishes the...

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Honda CB550 CB500 CB400 CB350 High Performance Kibblewhite Valve Stem Seal Set

$51.73

Honda CB550 CB500 CB400 CB350 High Performance Kibblewhite Valve Stem Seal Set - Replaces Honda OEM 12209-333-005. This valve-stem seal controls oil at the...

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Honda CB550F CB550K CB500K High Performance Kibblewhite Intake/Exhaust Valve Guide

$62.09

Honda CB550F CB550K CB500K High Performance Kibblewhite Intake/Exhaust Valve Guide. This valve guide supports and centers the valve stem in the cylinder head while...

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Honda CB550F CB550K CB500K High Performance Kibblewhite Black Diamond Exhaust Valve

$76.89

Honda CB550F CB550K CB500K High Performance Kibblewhite Black Diamond Exhaust Valve - Replaces Honda OEM 14721-323-005. This engine valve opens and seals the combustion...

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Honda CB550 CB500 CL100 CL125 High Performance Kibblewhite Black Diamond Intake Valve

$81.33

12-0080

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Honda CB550 CB500 CL100 CL125 High Performance Kibblewhite Black Diamond Intake Valve. This engine valve opens and seals the combustion chamber at the correct...

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Honda CB550F CB550K CB500K High Performance Kibblewhite Valve Spring Set

$109.45

Honda CB550F CB550K CB500K High Performance Kibblewhite Valve Spring Set. This valve spring set closes the valves and helps control valve motion at the...

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Honda CB750 CB550 CB500 CB400 Tappet Covers

$7.18

01-9980

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Honda CB750 CB550 CB500 CB400 Tappet Covers. This protective cover closes and protects the matching service opening or mounted component. Fitment / Compatibility Fits...

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1971-73 Honda CB500K Engine Oil Seal Kit

$27.31

1971-73 Honda CB500K Engine Oil Seal Kit. This oil seal retains oil around the matching shaft, hub, or housing bore. Replace hardened, cut, grooved,...

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About the Honda CB500K Four

Classic Four repair choices with explicit year and brake-position applications.

The CB500 Four introduced in 1971 is the four-cylinder motorcycle behind the classic CB500K restoration search. Its carburetor bank, engine and brake applications need to be kept separate from the CB500T twin and later CB500 generations.

Go directly to a Four application

The year buttons and repair shortcuts above the products provide direct classic-Four routes. Use the separate bowl gasket for the bowl joint, the front master-cylinder kit for hydraulic service, or the wider engine gasket set for a teardown. Each example lists its own Four years.

Choose the model and repairClassic CB500K Four versus later CB500 listings

CB500 generation and repair routes
Motorcycle	Use this route	Parts-selection detail
Classic CB500K Four	The 1971, 1972 and 1973 year buttons above the product list.	The carburetor kit, bowl gasket, overhaul gasket set, front-cylinder kit and rear shoes below explicitly list those classic years.
CB500T twin	CB500T twin repair guide.	Choose twin-specific engine and carburetor applications.
Later CB500 motorcycle	CB500 generation guide.	A later model-year application appearing in the unfiltered grid is not an early Four application.

A year filter narrows the product list; the exact product application and fitted component still decide the order.

Identify your motorcycle before orderingCB500K frame, engine and component checks

Start with the full model year and motorcycle identity. The examples describe individual product applications, not a complete serial-to-year chart.

CB500K identification checklistWhat to record before ordering

CB500K model and component identification checklist
Check	What to record	How it helps
Year and generation	Classic Four or later K catalog application	Keeps the two repair groups separate.
Frame and engine	Both complete stamped identities	Records the fitted engine as well as the chassis.
Carburetors	Body markings and bowl profile	Separates the early repair kit from later bowl gaskets.
Forks and rear brake	Fork identity and rear-hub details	Matches the narrower seal and shoe applications.

Need help identifying your CB500K?

Contact PartsNMore with the full model and year, frame and engine markings, and clear photos of the component.

Classic CB500K Four repair parts

These are explicit Four applications. Use the direct product links to avoid confusing a later CB500 part with a classic repair.

Classic CB500K Four repair parts
Repair	Listed application	Parts and buying detail
Carburetor overhaul	1971–1973	1971–1973 Four carburetor repair kit — match the fitted bank and required service pieces.
Float-bowl joint	1971–1973	1971–1973 Four float-bowl gasket — available separately and sold individually.
Engine overhaul gaskets	1971–1973	1971–1973 Four overhaul gasket set — compare the actual contents with the teardown.
Front master-cylinder internals	1971–1973	1971–1973 front master-cylinder kit — front hydraulic repair.
Rear drum friction	1971–1973	1971–1973 Four rear brake shoes — rear wheel application.
Fork oil sealing	1972–1973	1972–1973 Four fork oil-seal pair — two oil seals, 35 × 48 × 10.5/11 mm.

Bowl gasket or carburetor repair kit

The 1971–1973 Four float-bowl gasket seals the bowl-to-body joint. The 1971–1973 Four carburetor repair kit is a broader service-parts option. Both explicitly list the classic Four years shown; compare the fitted carburetor and confirm kit contents for the planned repair.

More carburetor parts

Four-cylinder engine resealing

The 1971–1973 Four overhaul gasket set lists the 1971–1973 Four. A CB500T engine set or later CB500 gasket application serves a different engine. Identify the engine and list the joints being opened before checking the set’s contents.

More engine parts

Front hydraulic and rear drum repairs

The 1971–1973 front master-cylinder kit services the front master cylinder. The 1971–1973 Four rear brake shoes service the rear drum. These are separate assemblies and should be matched by position and fitted hardware.

More brakes parts

Fork oil seals for 1972–1973

The 1972–1973 Four fork oil-seal pair contains two oil seals. For a 1971 bike or a replacement fork, record its identity and complete seal dimensions for a separate application check.

More suspension parts

Restoring or customizing your CB500K?

For an early Four restoration, preserve the original controls as a reference before changing handlebars or mirrors. Later CB500 controls and routing need their own measurements.

Measure handlebar diameter, mirror threads, cable reach and clearance. Universal parts may require modification and are not a confirmed CB500K fit.

Why buy Honda CB500K parts from PartsNMore?

Supplying motorcycle parts since 2002. Meet PartsNMore.

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Stock on our shelves

Items marked in stock are held in our warehouse. Orders typically ship the same or next business day.

Free ground shipping

USA: order subtotal of $50 USD or more. Canada: orders over $50 CAD. Shipping rates and delivery details.

60-day returns

Eligible unused, unaltered parts in original packaging, with no restocking fee. Electrical parts are excluded. Return conditions.

Ask our parts team with your complete model, year, component markings and clear photos before ordering an uncertain application.

Honda CB500K parts questions

How do I avoid later CB500 parts when buying for a classic Four?

Use the 1971, 1972 or 1973 CB500K year buttons and the confirmed Four repair shortcuts above the product list. The unfiltered grid also contains later applications. Check the exact year and component on each product rather than relying on the collection name alone.

Is a separate bowl gasket available for the 1971–1973 CB500K?

Yes. This guide links a float-bowl gasket with explicit CB500K 1971–1973 applications, sold individually. It seals the bowl-to-body joint. The separate Four carburetor repair kit is another option when additional service pieces are needed.

Which CB500K brake parts are linked for 1971–1973?

The guide links a front master-cylinder repair kit and a separate rear drum-shoe product, each explicitly listing CB500K 1971–1973. Match the actual front cylinder or rear hub, particularly if the motorcycle has changed brake components.

Do the featured Four fork seals include a 1971 application?

The linked oil-seal pair lists CB500K 1972–1973 and states 35 × 48 × 10.5/11 mm. It does not establish 1971 fitment. Identify the fork and old seal specification for that year or for a replacement front end.

Browse parts

Choose your Honda CB500 model

Honda Motorcycle ATV Tappet Adjuster Screw & Nut Set - Replaces Honda OEM 90012-426-000

Honda Yamaha Suzuki Motorcycle Gear Change Lever

Honda CB750 CB550 CB500 CB650 Cylinder Sleeve O-Ring Gasket Set - Replaces Honda OEM 91304-286-000

Honda CB550F CB550K CB500K Cylinder Head Cover Gasket - Replaces Honda OEM 12391-323-000

Honda CB550F CB550K CB500K Cylinder Head Gasket - Replaces Honda OEM 12251-374-306

Honda CB550 CB500 CB650 Cylinder Base Gasket - Replaces Honda OEM 12191-426-306

1971-73 Honda CB500K Overhaul Gasket Set

Honda CB550F CB550K CB500K Gasket Set (Top End Set Only)

1971-73 Honda CB500K Athena Engine Gasket Set

Vintage Japanese Motorcycle Oil Drain Plug - 12mm - Replaces Honda OEM 92800-12000

Honda CB750 CB550 CB500 CB400 Chrome Points Cover - Replaces Honda OEM 30370-300-020

Honda CB550 CB500 CB400 CB350 High Performance Kibblewhite Valve Stem Seal Set

Honda CB550F CB550K CB500K High Performance Kibblewhite Intake/Exhaust Valve Guide

Honda CB550F CB550K CB500K High Performance Kibblewhite Black Diamond Exhaust Valve

Honda CB550 CB500 CL100 CL125 High Performance Kibblewhite Black Diamond Intake Valve

Honda CB550F CB550K CB500K High Performance Kibblewhite Valve Spring Set

Honda CB750 CB550 CB500 CB400 Tappet Covers

1971-73 Honda CB500K Engine Oil Seal Kit

About the Honda CB500K Four

Go directly to a Four application

Choose the model and repairClassic CB500K Four versus later CB500 listings

Identify your motorcycle before orderingCB500K frame, engine and component checks

CB500K identification checklistWhat to record before ordering

Classic CB500K Four repair parts

Bowl gasket or carburetor repair kit

Four-cylinder engine resealing

Front hydraulic and rear drum repairs

Fork oil seals for 1972–1973

Restoring or customizing your CB500K?

Why buy Honda CB500K parts from PartsNMore?

Stock on our shelves

Free ground shipping

60-day returns

Honda CB500K parts questions

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Honda CB500K Parts

1971–1973 CB500K Four: choose your year

Browse parts

Choose your Honda CB500 model

Go directly to a Four application

Choose the model and repairClassic CB500K Four versus later CB500 listings

Identify your motorcycle before orderingCB500K frame, engine and component checks

CB500K identification checklistWhat to record before ordering

Classic CB500K Four repair parts

Bowl gasket or carburetor repair kit

Four-cylinder engine resealing

Front hydraulic and rear drum repairs

Fork oil seals for 1972–1973

Restoring or customizing your CB500K?

Why buy Honda CB500K parts from PartsNMore?

Stock on our shelves

Free ground shipping

60-day returns

Honda CB500K parts questions

Your cart