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1972 Honda CB100K2 Fuel-System Parts

For a 1972 Honda CB100K2 fuel-system order, separate carburetor service from the seal between the original petcock and tank. The float comes with a pin, the drain screw includes an O-ring, and the petcock gasket requires a stock OEM tap.

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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...
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 CB100K carb rebuild kit

1970-72 Honda CB100K Carb Rebuild Kit

$22.95 USD
48-1387
Rebuild your CB100K carb with this Carb Rebuild Kit.Note: each kit rebuilds one carb, order the quantity you require.Key Features• Carb rebuild kit• Rebuilds...
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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1972 Honda CB100K2 · Fuel System Buying guide

Choose the repair location before choosing the parts

A float, bowl drain screw and petcock-body seal address different parts of the fuel system. Identify the fitted carburetor and fuel tap, then build the order around the repair you have established.

Parts to consider

Honda CB Carb Float ~ Replaces 16013-286-014 Carburetor Float with PinReplacement float supplied with its pin, sold individually. Reference 16013-286-014; CB100K application covers 1970–72.View part Honda CB Stock Type Float Bowl Drain Screw Float-Bowl Drain ScrewStock-type drain screw supplied with an O-ring, sold individually. Check the drain arrangement on the carburetor fitted to the bike.View part Honda CB Fuel Petcock Body O-Ring / Gasket ~ Replaces 16997-273-006 Original-Petcock Body SealO-ring for the joint between the stock OEM petcock body and tank. Not specified for aftermarket replacement petcocks.View part

Related parts: CB100K Carburetor Rebuild Kit · Float Needle and Seat

Keep kit contents distinct from separate service parts

The linked CB100K rebuild kit is specified to rebuild one carburetor, but its detailed contents are not enumerated. The separately linked float valve is a needle-and-seat set. Check the kit contents before ordering either alongside it; do not assume the float or drain screw is included.

Identify the tap before selecting its seal

The featured petcock seal is for a stock OEM tap at the body-to-tank joint. A replacement tap can require a different seal even on the same motorcycle. Check which tap is fitted before ordering this O-ring, especially when the tank has been changed.

Ordering questions

What should I record before ordering a float for a changed carburetor?

Identify the fitted carburetor and retain its float for comparison with reference 16013-286-014. The offered float includes a pin but gives no float dimensions; obtain the necessary geometry before ordering for a substituted carburetor.

Can I use the petcock gasket on an aftermarket tap?

The gasket is specified for a stock OEM petcock. Identify the fitted tap first; an aftermarket replacement requires its own seal specification rather than an assumption based on the motorcycle’s model year.

Should I add a needle and seat to the rebuild kit?

Check the kit’s contents before ordering both. The linked float-valve set explicitly supplies a needle and seat, while the rebuild-kit description confirms one-carb coverage without giving a detailed contents list.

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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