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1975 Honda CB125S2 Fuel System Parts

For fuel-system work on your 1975 Honda CB125S2, separate tank-joint sealing from carburetor repairs. The selected parts cover the stock petcock body seal, a float with its pin and a drain screw with an O-ring, each with its own matching checks.

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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 CB500 CB450 CB125 CB100 float valve 16011-302-004

Honda CB Float Valve ~ Replaces 16011-302-004

$9.95 USD
48-5009
Replace your float needle and seat with this Float Valve Set (needle and seat), replacing OEM #16011-302-004 / #16011-375-004.Key Features• Float valve set (needle...
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 CB750 CB550 CB500 CB450 CB400 float bowl drain screw

Honda CB Stock Type Float Bowl Drain Screw

$7.50 USD
48-5041
Replace your stock-type float bowl drain screw with this Float Bowl Drain Screw with O-Ring.Note: sold each, order the quantity you require.Key Features• Stock-type...
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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 CB450 CB350 CB200 CB175 front cable clip 45465-270-000

Honda CB Front Cable Clip ~ Replaces 45465-270-000

$7.00 USD
73-1116
Keep your wiring clean and secure with this Front Cable Clip, designed to hold the stop switch wires neatly against the front cable. Replaces...
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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Honda CB125S premium carb rebuild kit

1973-75 Honda CB125S Premium Carb Rebuild Kit

$31.95 USD
48-1223
Restore proper fuel delivery with this Premium Carburetor Rebuild Kit, designed to refresh worn internal components and bring your carburetor back to reliable operation....
Honda CB350 CB125 CB100 CB77 CB72 carb float 16013-286-014

Honda CB Carb Float ~ Replaces 16013-286-014

$22.95 USD
20-6500
Replace your carb float with this Carb Float with Pin, replacing OEM #16013-286-014. Fits the CB350F 1973, CB350K/CL350K/SL350, and the earliest classics including CB72/CB77...
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1975 Honda CB125S2 · Fuel System Buying guide

Order for the component being serviced

A petcock body seal, carburetor float and bowl drain screw serve different positions. Identify the fitted tank fittings and carburetor before selecting parts, especially when earlier repairs have changed either assembly.

Parts to consider

Honda CB Fuel Petcock Body O-Ring / Gasket ~ Replaces 16997-273-006 Petcock body O-ringSeals the joint between a stock OEM petcock body and the tank; references 16997-273-006 and 16960-011-000.View part Honda CB Carb Float ~ Replaces 16013-286-014 Carburetor float with pinReplacement float supplied with its pin; reference 16013-286-014. Sold individually.View part Honda CB Stock Type Float Bowl Drain Screw Float-bowl drain screwStock-type drain screw supplied with an O-ring. Sold individually; choose the quantity required.View part

Locate the sealing joint before choosing a gasket

The petcock O-ring seals between the stock OEM petcock body and the tank. It is not a general-purpose seal for every fuel tap. Identify that joint and the fitted petcock before ordering, particularly if the tank or tap has been replaced.

Plan the carburetor order by contents

The float includes a pin, and the separate drain screw includes an O-ring. Both are sold individually. Compare the carburetor components being serviced and keep the two jobs distinct; ordering one item does not supply the other or establish that additional worn parts are serviceable.

Buying questions

Will the petcock O-ring fit a replacement fuel tap?

The stated application is for a stock OEM petcock. If an aftermarket or unidentified tap is fitted, compare its sealing design and obtain a confirmed match before ordering this body-to-tank O-ring.

Does the carburetor float include a pin?

Yes. The float is supplied with its pin and is sold individually. Compare the float arrangement in the installed carburetor before ordering, since a replacement carburetor may use different components.

Is the O-ring included with the drain screw?

Yes. The stock-type float-bowl drain screw includes an O-ring and is sold individually. Match it to the fitted bowl and choose the required quantity rather than assuming a multi-screw pack.

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