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1966 Honda CB450K Fuel Tank Caps, Petcocks & Mounts

Keep your 1966 CB450K tank order specific to the connection being repaired. A filler cap, cap seal, front cushion and petcock are separate choices. Inspect the tank already fitted, then compare the filler arrangement, mounting cushions and petcock threads with each listing.

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Currently viewing Gas Tanks, Caps, Petcocks & Parts

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 CB450 CB400 CB350 gas cap rubber seal 17631-329-003

Honda CB Gas Cap Rubber Seal ~ Replaces 17631-329-003

$7.95 USD
20-0097
Replace the broad-fitment gas cap rubber seal on many classic Hondas with this Gas Cap Rubber Seal, replacing OEM #17631-329-003. Exceptionally wide fitment covering...
Honda CB450 CB360 CB350 CL350K0 CL350K2 fuel petcock 16950-292-000

Honda CB Fuel Petcock ~ Replaces 16950-292-000

$34.95 USD
29-0542
Replace your CB450, CL450, CB350, or CB360 fuel petcock with this Fuel Petcock, replacing OEM #16950-292-000 with M16 x 1.5 threads. Please verify the...
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Honda CB450 CL450 CB350 CB72 gas tank filler cap 17620-402-000

Honda Gas Tank Filler Cap ~ Replaces 17620-402-000

$7.95 USD
07-4647
Restore an early-era Honda with this Chrome Gas Tank Filler Cap (with gasket installed), replacing OEM #17620-402-000 / #17620-402-010. Fits the oldest models in...
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1966 Honda CB450K · Gas Tanks, Caps & Petcocks Buying guide

Match the filler, outlet or mounting point

The chrome cap includes a gasket, while a cap seal is offered separately. The petcock uses M16 × 1.5 threads. Front cushion rubbers are sold individually, with two listed per motorcycle; no replacement tank is featured here.

Parts to consider

Honda CB Fuel Petcock ~ Replaces 16950-292-000 M16 × 1.5 fuel petcockFuel tap referencing Honda 16950-292-000 with M16 × 1.5 mounting threads. Verify the threads on the tank actually fitted to your motorcycle before selecting this replacement.View part Honda Gas Tank Filler Cap ~ Replaces 17620-402-000 Chrome filler cap with gasketChrome tank filler cap supplied with its gasket installed, referencing Honda 17620-402-000 / 17620-402-010. Compare your tank’s filler and existing cap before ordering.View part Honda CB Gas Cap Rubber Seal ~ Replaces 17631-329-003 Fuel cap rubber sealSeparate rubber seal referencing Honda 17631-329-003 and listed for the 1966 CB450K. Compare it with the seal in the cap you are retaining; it is not a complete filler cap.View part

Related parts: Front fuel tank cushion rubber

Choose a cap or seal according to what is worn

The cap listing explicitly includes its gasket installed. The separate rubber seal is a service choice when retaining a compatible cap. Compare the existing components before buying both; an installed gasket does not mean every seal listed under the same model is automatically an extra requirement.

Check the tank rather than assuming its history

A replacement tank can change the filler or outlet fittings while the motorcycle still carries its original model badge. Verify the petcock’s M16 × 1.5 thread requirement and compare the cap arrangement. Renew front cushions by the stated sold-each quantity, after inspecting the mounting points that need attention.

Buying questions for your CB450K

Do I need the separate rubber seal with a new filler cap?

The chrome filler cap is described as having its gasket installed. The separate seal is useful when renewing a compatible retained cap. Compare what you have and what the new cap supplies before adding a second sealing part.

Is the petcock thread size confirmed by the model year alone?

The listing specifies M16 × 1.5 and instructs the buyer to verify the thread. Use the outlet on the tank fitted to the motorcycle, particularly with a replacement tank; model year alone does not verify an altered fitting.

Are the two front tank cushion rubbers supplied together?

The listing states two used per motorcycle but sells each rubber individually. Order the quantity needed for the mounting positions you are renewing. This cushion listing does not establish inclusion of other tank mounting hardware.

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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