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1973 Honda CB500K Fuel, Carburetor & Intake Repair Plan

Fuel-system work on your 1973 Honda CB500K can start at the tank, carburetor internals or intake. Identify the affected section before buying service parts. A carburetor kit covers one carb, the original airbox filter serves the bike, and a fuel cap has separate supporting pieces.

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Honda motorcycle parts

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Honda CB front fuel tank holder rubber 17611-283-010

Honda CB Front Fuel Tank Holder Rubber ~ Replaces 17611-283-010

$7.87 USD
02-6534
Secure the front of your fuel tank with this Front Fuel Tank Holder Rubber, a direct replacement for OEM #17611-283-010. Fits a broad range...
Honda CB750 CB550 CB500 carb fuel line o-ring kit

Honda CB750 / CB550 / CB500 Carb Fuel Line O-Ring Kit

$11.69 USD
48-0791
Refresh all your carb fuel-line and float-bowl seals with this Carb Fuel Line O-Ring Kit, 12 pieces. Includes 8 carb fuel connector tube O-rings...
Honda CB750K CB550K CB500K fuel petcock 16950-300-020

1969-74 Honda CB750K / CB550K / CB500K Fuel Petcock ~ Replaces 16950-300-020

$44.95 USD
20-8039
Replace your early CB750K fuel petcock with this Honda CB750 Fuel Petcock, replacing OEM #16950-300-020. Includes internal gaskets, strainers, and other internals.It's a good...
Honda CB750 CB550 CB500 throttle cable pull 17910-341-000

Honda CB750 / CB550 / CB500 Throttle Cable ~ Pull ~ Replaces 17910-341-000

$25.95 USD
51-2505
Replace your CB750 throttle pull cable with this Throttle Cable "Pull Type", replacing OEM #17910-341-000. End-to-end length 40". Made in Japan.Key Features• Throttle cable,...
Honda CB750K CB550K CB500K fuel petcock screw and washer set 93500-06028-0A

1969-74 Honda CB750K / CB550K / CB500K Fuel Petcock Screw and Washer Set ~ Replaces 93500-06028-0A

$3.95 USD
49-0223
Refresh your fuel petcock fasteners with this Fuel Petcock Screw and Washer Set, including 2 chrome-plated fuel petcock screws and 2 fibre washers. These...
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Honda CB750 CB550 CB500 CB400 CB360 gas cap rubber seal 17534-323-300

Honda CB Gas Cap Rubber Seal ~ Replaces 17534-323-300

$8.19 $7.95 USD
You save $0.24
20-0039
Replace your mid-'70s Honda gas cap rubber seal with this Gas Cap Rubber Seal, replacing OEM #17534-323-300. Broad fitment across the SOHC CB750K, CB500/CB550...
New
Honda CB750 CB550 CB500 CB350 CB200 fuel petcock gasket 16997-273-006

Honda CB Fuel Petcock Body O-Ring / Gasket ~ Replaces 16997-273-006

$5.50 USD
49-0260
Replace your fuel petcock gasket with this Fuel Petcock Gasket / O-Ring, replacing OEM #16997-273-006 / #16960-011-000. This is the O-ring that goes between...
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Honda CB throttle sleeve 53141-300-010

Honda CB Throttle Sleeve ~ Replaces 53141-300-010

$9.95 USD
02-2462
Refresh the throttle feel on your Honda with this Nylon Throttle Sleeve, a replacement for OEM Ref. #53141-300-010 with exceptionally broad fitment across the...
Honda CB750 CB550 CB500 CB350 CB77 fuel petcock gasket 16955-268-020

Honda CB Fuel Petcock Gasket ~ Replaces 16955-268-020

$7.50 USD
29-7028
Replace your fuel petcock gasket with this Fuel Petcock Gasket, replacing OEM #16955-268-020.Key Features• Fuel petcock gasket• Replaces OEM #16955-268-020• Honda part name: Gasket,...
Honda CB750 CB550 CB500 fuel petcock screen 1969-74 16957-268-010

Honda CB Fuel Petcock Screen 1969-74 ~ Replaces 16957-268-010

$5.50 USD
20-8065
Replace the fuel petcock screen in your 1969-74 CB750K stock petcock (our #20-8039) with this Replacement Fuel Petcock Screen, replacing OEM #16957-268-010.Key Features• Replacement...
Honda CB750 CB550 CB500 CB450 type filler chrome cap 17510-323-310

Honda CB OEM Type Filler Chrome Cap ~ Replaces 17510-323-310

$49.95 USD
20-0045
Replace your OEM-type filler cap with this OEM Type Gas/Fuel Tank Chrome Cap, including gasket and hinge pin with E-clip for easy installation. Replaces...
Honda CB750 CB550 CB500 CB450 CB400 gas fuel tank cap latch assembly

Honda CB Gas/Fuel Tank Cap Latch Assembly

$44.95 USD
20-0083
Replace your gas cap latch with this Gas/Fuel Tank Cap Latch Assembly. Includes a chrome latch, return spring, latch mounting pin, and C-clip.Key Features•...
Honda CB750 CB550 CB500 CB400 CB350 pilot jet set size 45 (pk 4)

Honda CB Pilot Jet Set ~ Size #45 (Pk/4)

$15.95 USD
48-3105
Tune your low-speed circuit with this Pilot Jet Set of 4, size #45. Jet height 28mm, outer diameter 5.5mm.Pilot jets control your idle and...
Honda CB Pilot Jet Set ~ Size #42 (Pk/4)

Honda CB Pilot Jet Set ~ Size #42 (Pk/4)

$15.95 USD
48-3104
Tune your low-speed circuit with this Pilot Jet Set of 4, size #42. Jet height 28mm, outer diameter 5.5mm.Pilot jets control your idle and...
Honda CB750 CB550 CB500 CB400 CB350 pilot jet set size 40 (pk 4)

Honda CB Pilot Jet Set ~ Size #40 (Pk/4)

$15.95 USD
48-3103
Tune your low-speed circuit with this Pilot Jet Set of 4, size #40. Jet height 28mm, outer diameter 5.5mm.Pilot jets control your idle and...
Honda CB750 CB550 CB500 float bowl drain screw o-rings pk 4

Honda CB750 / CB550 / CB500 Float Bowl Drain Screw O-Rings Pk/4

$5.95 USD
48-0793
Replace your float bowl drain screw with O-ring on these earlier models with this Float Bowl Drain Screw with O-Ring 4-Pack.Key Features• Float bowl...
Honda CB1100 CB1000 CB900 CB750 CB550 air screw needle o-ring

Honda CB Air Screw Needle O-Ring

$1.95 USD
48-5043
Replace your air screw needle O-ring with this Air Screw Needle O-Ring, 2.8mm x 1.2mm.Note: sold each, order the quantity you require.Key Features• Air...
Honda CB750 CB550 CB500 CB450 CB400 float bowl drain screw

Honda CB Stock Type Float Bowl Drain Screw

$7.50 USD
48-5041
Replace your stock-type float bowl drain screw with this Float Bowl Drain Screw with O-Ring.Note: sold each, order the quantity you require.Key Features• Stock-type...
Honda CB750 CB550 CB500 CB400 CB350 round pod air filter

Honda CB Round Pod Air Filter

$22.95 USD
15-0030
Match the 15-0020 fitment with a chrome end-cap pod using this 39mm Round Pod Air Filter with chrome end cap. Circular style, supplied dry,...
New
Honda CB550 CB500 CB360 rear fuel tank holder rubber 17613-286-000

Honda CB Rear Fuel Tank Holder Rubber ~ Replaces 17613-286-000

$9.95 USD
12-0133
Restore proper rear fuel tank mounting on your mid-'70s twin or four with this Rear Fuel Tank Holder Rubber, a direct replacement for OEM...
New
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Honda CB1000 CB900 CB750 fuel tank emblem clamp nut 87311-634-600

Honda CB Fuel Tank Emblem Clamp Nut ~ Replaces 87311-634-600

$6.25 USD
99-5267
Secure your fuel tank emblem properly with this Fuel Tank Emblem Clamp Nut, designed as a direct replacement for the original Honda hardware. This...
Honda CB750 CB550 CB500 CB360 throttle adjusting bolt 53190-300-000

Honda CB Throttle Adjusting Bolt ~ Replaces 53190-300-000

$9.95 USD
73-0846
Replace your throttle adjusting bolt with this Throttle Adjusting Bolt, replacing OEM #53190-300-000.Key Features• Throttle adjusting bolt• Replaces OEM #53190-300-000• Honda part name: Bolt,...
Honda CB750 CB550 CB500 CB400 CB350 pilot jet set size 38 (pk 4)

Honda CB Pilot Jet Set ~ Size #38 (Pk/4)

$15.95 USD
48-3102
Tune your low-speed circuit with this Pilot Jet Set of 4, size #38. Jet height 28mm, outer diameter 5.5mm.Pilot jets control your idle and...
Honda CB750 CB550 CB500 CB400 CB350 pilot jet set size 35 (pk 4)

Honda CB Pilot Jet Set ~ Size #35 (Pk/4)

$15.95 USD
48-3100
Tune your low-speed circuit with this Pilot Jet Set of 4, size #35. Jet height 28mm, outer diameter 5.5mm.Pilot jets control your idle and...
Honda CB550 CB500 CB400 CB350 float bowl gasket

Honda CB550 / CB500 / CB400 / CB350 Float Bowl Gasket

$7.00 USD
20-5022
Replace your float bowl gasket with this Float Bowl Gasket (O-ring), fitting the CB500K/CB550 family, CB350F Supersport, and CB350K.Key Features• Float bowl gasket (O-ring)Fitment...
Honda CB750 CB550 CB500 CB360 throttle adjusting spring 53191-300-000

Honda CB Throttle Adjusting Spring ~ Replaces 53191-300-000

$9.50 USD
73-0847
Replace your throttle adjusting spring with this Throttle Adjusting Spring, replacing OEM #53191-300-000.Key Features• Throttle adjusting spring• Replaces OEM #53191-300-000• Honda part name: Spring,...
Honda CB750 CB550 CB500 CB400 chrome velocity stack set 4 39mm id

Honda CB Chrome Velocity Stack Set/4 ~ 39mm ID

$169.95 USD
73-1145
Open up your intake with this Chrome Velocity Stack Set of 4 with integrated debris screens. 39mm inner diameter, sold as a complete set...
New
Honda CB550F CB550K CB500K CB500T carburetor screw kit

1971-77 Honda CB550 / CB500 Carburetor Screw Kit

$17.50 USD
49-0773
Refresh your CB500 or CB550 carb screws with this Carburetor Screw Kit. Get a new set of screws to clean up the look of...
Honda CB750 CB550 CB500 CB400 CB350 round pod air filter black red

Honda CB Round Pod Air Filter ~ Black/Red

$24.95 USD
15-0020
Fit performance pod filters on your SOHC CB with this 39mm Round Pod Air Filter with black body and red foam filter. Circular style...
Honda CB750 CB550 CB450 CB400F fuel tank cap latch 17510-323-310

Honda CB Matte Black Fuel Tank Cap with Latch ~ Replaces 17510-323-310

$69.95 USD
07-9967
Restore your classic Honda's tank with a factory-look matte-black finish using this Matte Black OEM-Type Fuel Tank Cap with Latch Assembly. A direct replacement...
Honda CB750 CB550 CB500 CB400 CB350 pilot jet set size 48 (pk 4)

Honda CB Pilot Jet Set ~ Size #48 (Pk/4)

$15.95 USD
48-3106
Tune your low-speed circuit with this Pilot Jet Set of 4, size #48. Jet height 28mm, outer diameter 5.5mm.Pilot jets control your idle and...
Honda CB550 CB500 CB400 CB350 float bowl gasket

Honda CB550/CB500/CB400/CB350 Float Bowl Gasket

$9.95 USD
20-8032
Replace your CB350F/CB400F or CL350/SL350 float bowl gasket with this Float Bowl Gasket (O-ring).Key Features• Float bowl gasket (O-ring)Fitment / Compatibility• Honda CB350F (1973‑74)...
Honda CB550F CB550K CB500K carb holder set 16211-323-000

1971-77 Honda CB550F / CB550K / CB500K Carb Holder Set ~ Replaces 16211-323-000

$54.95 USD
48-1476
Replace your CB500K, CB550K, or CB550F Supersport carb holders with this Carb Holder Set of 4. Replaces those old cracked or dried-up carb holders....
Honda CB550F CB550K CB500K carb float setting tool

1971-77 Honda CB550F / CB550K / CB500K Carb Float Setting Tool

$15.94 USD
73-0888
Set your carb floats with ease using this Carb Float Setting Tool. Use this tool to help set your floats with ease. This pre-set...
Honda CB500K carb rebuild kit

1971-73 Honda CB500K Carb Rebuild Kit

$34.95 USD
73-0829
Rebuild a CB500K carburetor with this Carb Rebuild Kit. Contains: float bowl gasket, carb top gasket, float needle and seat (1.8), secondary main jet...
Honda CB550F CB550K CB500K carb air box rubber boot set 4

1971-77 Honda CB550F / CB550K / CB500K Carb Air Box Rubber Boot Set/4

$89.95 USD
73-0137
Replace your CB500 or CB550 carb-to-air-box boots with this Carburetor to Air Box Rubber Boot Set of 4. Replaces your old worn, cracked, or...
Honda CB550F CB550K CB500K carb float 16013-329-004

1971-77 Honda CB550F / CB550K / CB500K Carb Float ~ Replaces 16013-329-004

$28.95 USD
20-6511
Replace your CB500 or CB550 carb float with this Carb Float with Pin, replacing OEM #16013-329-004.4 carb floats are used per bike, order the...
Honda CB500K stock type air filter 17210-323-030

1971-73 Honda CB500K Stock Type Air Filter ~ Replaces 17210-323-030

$32.95 USD
15-0162
Fit an alternate stock-type air filter option for your CB500K with this Stock-Type Air Filter, replacing OEM #17210-323-030.Key Features• Stock-type air filter• Replaces OEM...
Honda CB750 CB550 CB400F CB450 CB360 tank cap latch assembly black

Honda CB Gas/Fuel Tank Cap Latch Assembly ~ Black

$29.95 USD
01-9934
Replace a broken, missing, or worn-out fuel cap latch with this Gas/Fuel Tank Cap Latch Assembly in black. Includes the black latch, return spring,...
New
Honda CB750K CB550K CB500K fuel tank emblem Honda CB500 550 750

1971-76 Honda CB750K / CB550K / CB500K Fuel Tank Emblem Honda CB500/550/750

$69.95 USD
99-5542
Upgrade or restore your classic Honda motorcycle with this Fuel Tank Emblem — precision‑designed and styled to replace multiple factory emblems. This authentic replacement...
Honda CB550 CB500 CB400 CB350 float valve 16011-329-004

Honda CB550 / CB500 / CB400 / CB350 Float Valve ~ Replaces 16011-329-004

$13.95 USD
48-1510
Replace your float needle and seat with this Float Valve Set (needle and seat), replacing OEM #16011-329-004.Key Features• Float valve set (needle and seat)•...
Honda CB750 CB550 CB500 CB400 CB350 foam round pod air filter

Honda CB Foam Round Pod Air Filter

$16.95 USD
15-0095
Fit foam-media pods to your SOHC CB with this 39mm Round Foam Pod Air Filter with chrome end caps and rubber mouth. Circular style,...
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1973 Honda CB500K · Fuel System Buying guide

Build the order around the tank, carburetors or air intake

A one-carb rebuild kit and a four-holder intake set use different package counts. The stock-type filter references the original CB500K airbox, while the chrome cap includes its gasket and hinge hardware. Compare the existing assemblies before selecting a combination of parts.

Parts to consider

1971-73 Honda CB500K Carb Rebuild Kit Internal service kit for one CB500K carbThe Japanese-made kit lists gaskets, needle and seat, jets, jet needle, O-rings and small hardware. Four kits service the full four-carb rack.View part 1971-73 Honda CB500K Stock Type Air Filter ~ Replaces 17210-323-030 Single filter for the original airboxReferences 17210-323-030 for the 1971–73 CB500K; one stock-type filter services the original airbox.View part Honda CB OEM Type Filler Chrome Cap ~ Replaces 17510-323-310 Chrome cap with sealing and hinge partsReferences 17510-323-310 and includes a gasket, hinge pin and E-clip. The separate latch remains another order choice.View part

Related parts: Set of four engine-side carburetor holders · Individual replacement float with pin

Separate kit quantity from intake package quantity

The carb kit is explicitly for one carburetor, so four are needed for a complete rack rebuild. Its named internal contents should not be read as a set of intake holders or airbox boots. Those rubber products each have their own four-piece listings and clamp requirements.

Confirm the retained fuel and intake assemblies

A stock airbox filter depends on the original airbox being present. Likewise, cap and petcock service pieces depend on the fitted tank hardware. Identify modifications and compare component references before treating a listed model application as proof that an altered assembly uses the same replacement parts.

Common questions

Which internal carb parts are included, and which float parts are separate?

The one-carb kit includes bowl and top gaskets, needle-and-seat, jets, D26 needle, O-rings, screw with spring and C-clip. A float is not named in its contents. Compare that list before adding separate valves or gaskets; four kits rebuild the complete rack.

What original intake equipment must match the stock-filter order?

The element references Honda 17210-323-030 for the original 1971–73 CB500K airbox. One is supplied and one services that airbox. Confirm the retained intake before applying the specification; a pod or replacement-airbox conversion needs its own fitment comparison.

Which fuel-cap service parts should I avoid ordering twice?

The chrome cap already includes its gasket, hinge pin and E-clip under 17510-323-310. The latch is separately offered with its own return spring, pin and C-clip. Check the retained cap and latch before also adding separate seal or hinge-related purchases.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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Parts categories for 1973 Honda CB500K Four

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