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1978 Honda CB125S5 Carburetor Drain Screws

For a 1978 Honda CB125S5 bowl-drain repair, compare the screw in the installed carburetor before ordering. The featured stock-type replacement has a stated 1978–79 CB125S application and includes its O-ring, with each screw sold individually for a clearly defined purchase.

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Honda CB1100 CB1000 CB900 CB750 float bowl drain screw -a

Honda CB Stock Type Float Bowl Drain Screw ~-A

$6.50 USD
48-5042
Small part, but an important one. This float bowl drain screw with included O-ring allows you to properly drain the carburetor bowl without leaks,...
Honda CB1100 CB1000 CB900 CB750 float bowl drain screw

Honda CB Stock Type Float Bowl Drain Screw

$6.50 USD
48-5042
Replace your stock-type float bowl drain screw with this Float Bowl Drain Screw with O-Ring for the later DOHC and Nighthawk lineup.Note: sold each,...
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1978 Honda CB125S5 · Carburetor Drain Screws Buying guide

Check the drain screw and its seal as one purchase

The featured drain screw comes with its O-ring and is sold individually. Confirm the carburetor application before ordering, especially if a previous owner changed the carburetor or fitted a different bowl.

Parts to consider

Honda CB Stock Type Float Bowl Drain Screw ~-A Float bowl drain screw with O-ringStock-type drain screw with its O-ring included. Sold individually for the listed 1978–79 CB125S application.View part

Account for the included seal

The featured screw includes its O-ring, so check the contents of any other carburetor-service purchases before adding a duplicate seal. Individual supply lets you order for the components being replaced without assuming the purchase contains a multi-screw set.

Match a changed bowl before ordering

The documented application includes the 1978–79 CB125S. A different carburetor or bowl deserves a fresh comparison with the removed screw, because the motorcycle year alone cannot identify that replacement component. Use the appropriate service information for installation and sealing checks.

Common ordering questions

Should I order an O-ring along with this drain screw?

The O-ring is included with the featured screw. Check your other service parts before adding another seal, and confirm the installed carburetor application if its bowl has been changed.

How many drain screws does one order include?

The screw is sold individually, with its O-ring. Order the number of screws you actually intend to replace.

Can I choose this screw by bike year after changing the bowl?

Compare the changed bowl and removed screw before ordering. The stated 1978–79 CB125S application does not establish the thread or sealing arrangement of an unidentified replacement bowl.

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Send your model and year, plus photos of your existing part and any changes to the original setup.

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