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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 CB 39mm black round pod air filter

39mm Round Pod Air Filter with Black End Cap

$24.95 USD
15-0167
Replace worn or restrictive clamp-on filters with this aftermarket 39mm round pod air filter. The black end cap gives the filter a darker custom...
Honda CB550 CB500 CB400 CB350 secondary main jet 68 99202-601-0680

Honda CB Secondary Main Jet #68 with O-Ring ~ Replaces 99202-601-0680

$5.95 USD
48-1586
Replace a worn, damaged, or incorrect secondary main jet on compatible Honda CB Keihin carburetors with this aftermarket Keihin-type press-fit main jet in size...
Honda CB750 CB550 joker machine black gas tank cap latch assembly

Honda CB Joker Machine Black Gas Tank Cap Latch Assembly

$79.95 USD
73-1157
Upgrade your fuel tank latch with the Joker Machine Custom Black Gas/Fuel Tank Cap Latch Assembly. Designed as a premium alternative to the discontinued...
Honda CB750 CB550 CB500 joker machine billet black flip-up gas cap

Honda CB Joker Machine Billet Black Flip-Up Gas Cap

$149.95 USD
73-1156
Joker Machine’s Custom Black Flip-Up Billet Gas Cap is a beautifully crafted upgrade to your original tank cap. CNC-machined from solid 1" thick billet...
Honda CB550K CB500K jet needle set 16012-323-004

1971-76 Honda CB550K / CB500K Jet Needle Set ~ Replaces 16012-323-004

$24.95 USD
99-5330
Upgrade or restore your classic Honda motorcycle with this Jet Needle Set — high‑quality replacement components designed to match OEM performance standards. This needle...
Honda CB550K CB500K carburetor stabilizer bracket

1971-76 Honda CB550K / CB500K Carburetor Stabilizer Bracket

$49.95 USD
29-0540
Stabilize your CB500 or CB550 carburetors when running pods or hardtails with this Carburetor Stabilizer Bracket. High-quality stainless steel, made in Canada. A must-have...
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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.

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