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1968 Honda CB450K Fuel Tank Fittings & Mounting Rubbers

Your 1968 CB450K tank may need an outlet fitting, filler seal or mounting cushion rather than a complete replacement. Separate those jobs before ordering. The petcock has a stated thread requirement, the new cap includes a gasket, and the front cushions have their own quantity rule.

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Currently viewing Gas Tanks, Caps, Petcocks & Parts

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Honda CB rear fuel tank holder rubber 17613-292-000

Honda CB Rear Fuel Tank Holder Rubber ~ Replaces 17613-292-000

$14.95 USD
02-6535
Secure your fuel tank at the rear with this Rear Fuel Tank Holder Rubber, a direct replacement for OEM #17613-292-000. One used per 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 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...
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 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...
New
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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1968 Honda CB450K · Gas Tanks, Caps & Petcocks Buying guide

Check the outlet, filler and mounting points individually

The petcock requires M16 × 1.5 threads. The chrome cap arrives with a gasket installed; a separate seal is offered for a retained cap. Emblem clamp nuts are retaining hardware for the emblem, distinct from mounting rubbers.

Parts to consider

Honda CB Fuel Petcock ~ Replaces 16950-292-000 M16 × 1.5 fuel tapPetcock referencing Honda 16950-292-000 with M16 × 1.5 threads. The listing requires a thread-size check before ordering; measure the outlet on the tank fitted to the motorcycle.View part Honda Gas Tank Filler Cap ~ Replaces 17620-402-000 Chrome fuel filler capCap with its gasket installed, referencing Honda 17620-402-000 / 17620-402-010. Match the filler arrangement and existing cap before choosing a complete cap replacement.View part Honda CB Front Fuel Tank Holder Rubber ~ Replaces 17611-283-010 Front fuel tank cushionFront cushion rubber referencing Honda 17611-283-010. Two used per motorcycle, explicitly sold each. Sold individually; order the quantity required for the front mounting points being renewed.View part

Related parts: Separate rubber cap seal · Tank emblem retaining nut

Treat front and rear tank cushions as different parts

The front cushion references 17611-283-010 and is explicitly sold each, with two used per motorcycle. The rear cushion has another reference, 17613-292-000, and lists one used per motorcycle. Compare the actual mounting point and confirm package quantity where it is not explicitly stated.

Check the retained cap and emblem hardware

A new chrome cap includes its gasket, so the separate seal is not an automatic extra purchase. Match it to the cap you intend to retain. The emblem clamp nut is sold individually and concerns emblem attachment; do not count it as a fuel-tank mounting rubber or a complete badge set.

Practical CB450K buying questions

Does the new chrome cap already include its gasket?

The cap description states that its gasket is installed. A separate rubber seal is another service choice for a compatible retained cap. Check the cap and filler arrangement before adding both items to the same repair order.

Are front and rear cushion rubbers the same part?

They have different references and positions: 17611-283-010 for the front and 17613-292-000 for the rear. Compare the mounting point being renewed. The front is explicitly sold each; the rear’s one-used statement alone does not define its supplied package quantity.

Does an emblem clamp nut order include the tank badge?

The item is the retaining clamp nut, sold individually, with references 87311-634-600 / 87311-516-000. Its description does not identify a supplied emblem. Inspect the emblem attachment and count the retaining pieces needed for that repair.

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