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1974 Honda CB125S1 Fuel System

When choosing fuel-system parts for a 1974 CB125S1, start with the fitted carburetor and fuel tap. These selections cover the float assembly, bowl drain screw and original-tap body seal. Determine the leak or wear location before choosing a replacement.

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Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

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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...
New
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....
New
Honda CB125S CB100K fuel petcock 16950-107-000

1970-74 Honda CB125S / CB100K Fuel Petcock ~ Replaces 16950-107-000

$21.46 USD
29-0541
Replace your CB100K or CB125S fuel petcock with this Fuel Petcock, replacing OEM #16950-107-000 / #16950-107-005 / #16950-356-005 / #16950-356-700. Single fuel output type...
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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1974 Honda CB125S1 · Fuel System Buying guide

Choose the service part for the affected joint or assembly

A carburetor float, drain screw and tap body seal address different repairs. Check the component fitted to the bike, then distinguish confirmed package contents from any other service parts the job requires.

Parts to consider

Honda CB Carb Float ~ Replaces 16013-286-014 Carburetor float and pinOne replacement float assembly supplied with its pin. Sold individually, with replacement reference 16013-286-014.View part Honda CB Stock Type Float Bowl Drain Screw Bowl drain screw with sealStock-type float-bowl drain screw supplied with an O-ring. Each screw is sold individually.View part Honda CB Fuel Petcock Body O-Ring / Gasket ~ Replaces 16997-273-006 Original-tap body sealPetcock-to-tank body seal for the stock original tap. Replacement references 16997-273-006 and 16960-011-000.View part

Separate float service from bowl-drain service

The float is supplied with a pin and sold individually. The separate bowl drain screw includes an O-ring and is also sold individually. Compare the fitted carburetor and old components first; neither purchase establishes the contents of a complete carburetor rebuild kit.

Identify the tap before replacing its seal

The selected body seal is intended for the stock original petcock at the tank connection. Check that this joint is the source of the leak. A replacement or aftermarket tap may use a different sealing arrangement and needs its own compatible service part.

Buying questions

Is the float pin included?

Yes. The selected float assembly comes with its pin and is sold individually. Compare the assembly with the one in the fitted carburetor before ordering, especially if the carburetor has been changed.

Does the drain screw arrive with its seal?

The selected stock-type drain screw includes an O-ring. It is sold individually. Check the bowl and screw arrangement before purchase; the supplied seal does not establish compatibility with every replacement carburetor.

Can I fit the body seal to an aftermarket petcock?

Its supported scope is the stock original petcock. Identify any replacement tap and its seal requirements before ordering. An original-style appearance alone does not show that it uses the same tank-to-tap seal.

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