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1973 Honda CB500K Tank Cap, Latch & Mounting Repairs

Tank hardware on your 1973 Honda CB500K may need a new cap, latch or support rubber rather than a complete assembly. Check the retained tank and each connection. The chrome cap supplies sealing and hinge pieces, while the latch and mounting rubbers remain separate products.

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Currently viewing Gas Tanks, Caps, Petcocks & Parts

Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

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 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 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...
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•...
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 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 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 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...
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1973 Honda CB500K · Tank Caps & Service Parts Buying guide

Identify cap hardware, tank support and petcock sealing

The chrome cap references 17510-323-310 and includes a gasket, hinge pin and E-clip. The chrome latch has its own spring and retaining parts. Rear tank support uses one listed rubber, while the front supports use two individually supplied pieces.

Parts to consider

Honda CB OEM Type Filler Chrome Cap ~ Replaces 17510-323-310 Chrome cap with gasket and hinge hardwareOne cap cross-references 17510-323-310, with gasket, hinge pin and E-clip named in the contents.View part Honda CB Gas/Fuel Tank Cap Latch Assembly Chrome latch and retaining piecesThe listing names a return spring, mounting pin and C-clip with the latch. It is separate from the filler-cap purchase.View part Honda CB Rear Fuel Tank Holder Rubber ~ Replaces 17613-286-000 One rear tank cushioning rubberReferences 17613-286-000. The stated CB500K rear-support application uses one piece.View part

Related parts: Separate cap seal, Honda 17534-323-300 · Front support rubbers, each sold individually · Tank-joint O-ring for the stock OEM petcock

Compare a whole cap purchase with a seal-only repair

The chrome cap already includes its gasket and hinge hardware. The separately offered rubber seal is a different repair choice for a retained compatible cap. Inspect the cap, filler neck, latch and vent path before choosing which parts to replace; a new gasket cannot correct bent or damaged hardware.

Match the petcock joint and tank support independently

The selected petcock O-ring is specified for a stock OEM body at the tank joint; changed petcocks need their own sealing comparison. The tank supports are separate rubber parts, with two front pieces sold individually and one rear piece for the stated CB500K application. Inspect all mounting contacts before choosing quantities.

Common questions

Which included hardware should I check before adding a separate latch or seal?

The chrome cap includes a gasket, hinge pin and E-clip under 17510-323-310. The latch separately includes a return spring, mounting pin and C-clip. Inspect the retained pieces and compare both contents lists before choosing overlapping cap, latch or sealing purchases.

How many front and rear tank support rubbers are supplied?

Each front rubber references 17611-283-010 and is sold individually, with two required. The CB500K rear support uses one separately supplied 17613-286-000 rubber. Count the damaged contacts before ordering; the front and rear positions do not share a single rubber specification.

Will the tank-joint gasket fit any aftermarket petcock?

The selected O-ring is specified for the stock OEM petcock-body-to-tank joint under 16997-273-006 or 16960-011-000. Compare the fitted tap and tank sealing groove before ordering. The listed CB500K application does not establish the sealing requirements of an aftermarket petcock.

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