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1972 Honda CB500K Fuel Tank Caps, Seals & Mounts

Fuel tank service for a 1972 CB500K may involve the filler cap, latch, cushions or the joint at the petcock. Inspect the actual part before buying. A cap’s gasket and hinge hardware are different from a latch assembly, while stock fuel-valve seals require the appropriate valve.

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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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1972 Honda CB500K · Tank Cap, Seals & Mounts Buying guide

Choose the damaged tank component and its matching hardware

The chrome cap lists sealing and hinge pieces, and the latch has its own package. Front cushions are individual items while the rear holder is different rubber. Verify the stock petcock before choosing the body-to-tank O-ring shown in the related parts.

Parts to consider

Honda CB OEM Type Filler Chrome Cap ~ Replaces 17510-323-310 Chrome filler cap with hinge hardwareIncludes the gasket, hinge pin and E-clip; reference 17510-323-310.View part Honda CB Gas/Fuel Tank Cap Latch Assembly Chrome fuel cap latch assemblySeparate latch package containing its return spring, pin and C-clip.View part Honda CB Rear Fuel Tank Holder Rubber ~ Replaces 17613-286-000 Rear tank support rubberOne rear cushion for the listed tank arrangement, replacing 17613-286-000.View part

Related parts: Fuel cap rubber seal · Front tank cushion — supplied individually · OEM-petcock body-to-tank O-ring

Inspect the retained cap before buying only a seal

The replacement seal source calls for checking the hinge, latch, cap and sealing surfaces. A seal does not renew bent cap hardware or a damaged filler neck. If more pieces are needed, compare the chrome cap’s stated hinge contents with the separate latch package before completing the order.

Identify the fuel valve before ordering its body seal

The selected O-ring is expressly for the stock OEM petcock and seals the joint to the tank. Inspect the installed valve and sealing groove. An aftermarket valve must be checked on its own application; the motorcycle’s model year does not prove that its body accepts this stock seal.

Common questions

Which small parts are stated to come with the chrome cap?

The cap includes a sealing gasket, hinge pin and E-clip under Honda reference 17510-323-310. Its latch is separately offered with a return spring, mounting pin and C-clip. Compare the existing hinge, latch and seal before choosing replacement packages.

How are the three tank-support positions supplied?

Each front cushion is individually supplied under 17611-283-010, with two required per bike. The rear rubber references 17613-286-000 and supplies one for the CB500K rear position. Inspect each contact before ordering a front pair, rear piece or both.

Where is the featured petcock O-ring used?

References 16997-273-006 and 16960-011-000 identify the stock OEM petcock-body-to-tank joint. One O-ring is supplied for that joint. Confirm the actual petcock body and tank groove before ordering if either has been replaced or changed from the original arrangement.

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