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1979 Honda CB400TI Hawk I Carburetor Service Parts

Small carburetor parts should be chosen for the location being repaired on the 1979 Honda CB400TI Hawk I. This guide focuses on a bowl drain screw with its O-ring and the separate air cut-off valve components, each with a clear service role.

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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,...
Honda CB750 CB400 carb float 16013-679-005

1978-79 Honda CB750 / CB400 Carb Float ~ Replaces 16013-679-005

$29.95 USD
20-6506
Replace your 1979 DOHC CB750 or CB400 carb float with this Carb Float with Pin, replacing OEM #16013-679-005.4 carb floats are used per bike,...
Honda CB400 air cut off valve 16048-425-671

1978-79 Honda CB400 Air Cut Off Valve ~ Replaces 16048-425-671

$27.03 USD
20-4022
Replace your CB400's carb air cut-off valve with this Carb Air Cut-Off Valve, replacing OEM #16048-425-671 (diaphragm) plus spring and O-ring.Key Features• Carb air...
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1979 Honda CB400TI Hawk I · Carburetor Service Parts Buying guide

Match the part to the carburetor location

The bowl drain screw and air cut-off assembly are distinct purchases. Confirm where the original component belongs, then compare the supplied sealing pieces before adding individual parts to the carburetor order.

Parts to consider

Honda CB Stock Type Float Bowl Drain Screw Bowl Drain Screw & O-RingStock-type drain screw with O-ring, sold individually.View part 1978-79 Honda CB400 Air Cut Off Valve ~ Replaces 16048-425-671 Air Cut-Off Valve SetCarburetor diaphragm, spring and O-ring; diaphragm reference 16048-425-671.View part

A drain screw is an individual package

The stock-type bowl drain screw includes an O-ring and is sold each. Count the screws needed for the actual service. A second listing with similar wording is not evidence that the selected screw comes as a pair or a complete carburetor hardware kit.

Keep the diaphragm set together

The air cut-off selection provides the diaphragm, spring and O-ring. Its diaphragm reference is 16048-425-671, with the 1979 Hawk I explicitly included in the application. Use those established contents when comparing it with a diaphragm-only offer elsewhere.

Ordering questions

Do I need to add an O-ring to the drain screw order?

The selected drain screw includes its O-ring. Order the number of screw packages needed; do not assume one package covers both carburetors or all carburetor seals.

Is the air cut-off product only a rubber diaphragm?

The described package includes the diaphragm, spring and O-ring. Those contents distinguish it from a diaphragm-only replacement; confirm the fitted carburetor application before ordering.

Will these parts fit a replacement carburetor bank?

The verified application is the original Hawk I carburetor arrangement. If a different bank has been installed, identify it first and compare the specific drain-screw or diaphragm requirement before using the motorcycle year as the guide.

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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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