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1973 Honda CB175K7 Tank Caps & Petcocks

Tank-cap sealing and fuel-tap replacement are separate decisions on a 1973 Honda CB175K7. Choose a complete chrome cap, renew a matched cap seal, or compare the late-CB175K petcock with the tank connection and surrounding space on your motorcycle.

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Currently viewing Gas Tanks, Caps, Petcocks & Parts

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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
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...
New
Honda CB175K CB200K fuel petcock 16950-336-005

1972-74 Honda CB175K / CB200K Fuel Petcock ~ Replaces 16950-336-005

$42.95 USD
07-4649
Replace a leaking or stuck fuel petcock with this Fuel Petcock, a direct replacement for OEM #16950-336-005. Stock fit for the 1972-73 CB175K and...
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1973 Honda CB175K7 · Tank Caps & Petcocks Buying guide

Choose the tank component that needs attention

An installed gasket makes the complete cap a different purchase from the loose replacement seal. The petcock has its own application and must be checked against any changed tank.

Parts to consider

Honda Gas Tank Filler Cap ~ Replaces 17620-402-000 Chrome tank capChrome filler cap with its gasket installed; references 17620-402-000 and 17620-402-010.View part Honda CB Gas Cap Rubber Seal ~ Replaces 17631-329-003 Tank-cap rubber sealSeparate replacement cap seal, reference 17631-329-003. Compare the fitted cap before ordering.View part

Related parts: Late-CB175K fuel petcock

Retain a usable cap when appropriate

The complete chrome filler cap replaces 17620-402-000 and 17620-402-010 and arrives with its gasket installed. The loose seal replaces 17631-329-003. Choose the complete cap for a damaged cap assembly; retain a sound, correctly matched cap when only its rubber needs renewal.

Distinguish the late petcock application

The linked petcock replaces 16950-336-005 and is a stock-fit replacement for the 1972–73 CB175K. The same product serves earlier CB175K models with a length difference. That distinction matters when a 1973 frame carries a tank from an earlier motorcycle.

Questions before buying

Should I buy the complete cap or only its rubber seal?

Choose the loose 17631-329-003 seal for a sound matching cap. The complete chrome cap replaces 17620-402-000 or 17620-402-010 and includes its gasket, so an extra seal is not needed for that new cap.

Is the earlier CB175K length warning for this model?

The petcock distinguishes the 1972–73 CB175K stock application from the earlier 1969–71 application, where it is longer than the original. A changed tank still requires an independent clearance check.

What information is needed for a replacement-tank petcock?

Identify the tank connection and check the tap’s outlet position and clearance. No mounting-thread size is supplied for this petcock, so confirm that detail before ordering for a tank outside its listed stock application.

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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