1978 Honda CB550K Carb Floats & Drain-Screw Seals

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Honda CB1100 CB1000 CB900 CB750 float bowl drain screw o-rings pk 4

Honda CB Float Bowl Drain Screw O-Rings Pk/4

$5.80 USD

Replace your float bowl drain screw O-rings with this Float Bowl Drain Screw O-Rings 4-Pack.Key Features• Float bowl drain screw O-rings• 4 per packFitment...

Honda CB1100 CB1000 CB900 CB750 CB550 air screw needle o-ring

Honda CB Air Screw Needle O-Ring

$1.95 USD

Replace your air screw needle O-ring with this Air Screw Needle O-Ring, 2.8mm x 1.2mm.Note: sold each, order the quantity you require.Key Features• Air...

Honda CB1100 CB1000 CB900 CB750 float bowl drain screw -a

Honda CB Stock Type Float Bowl Drain Screw ~-A

$6.50 USD

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

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 CB650 CB550 CB125 carb float 16013-405-004

Honda CB750 / CB650 / CB550 / CB125 Carb Float ~ Replaces 16013-405-004

$27.95 USD

Replace your late-'70s CB carb float with this Carb Float with Pin, replacing OEM #16013-405-004 / #16013-393-004 / #16013-KCY-670 / #16013-MN1-671.4 carb floats are...

Honda CB750 / CB550 / CB400 / CB350 Keihin PD Carburetor Felt Throttle Shaft Seal Set/6

$21.95 USD

Replace worn or missing felt throttle shaft seals during carburetor service on compatible vintage Honda CB models with Keihin PD carburetors. These felt seals...

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1978 Honda CB550K · Carb Floats & Other Carb Components Buying guide

Choose the float or drain component actually needed

Float and pin contents differ from screw-and-seal and O-ring-only purchases. Check the fitted carburetor and seal position before combining these products, especially where a new drain screw already supplies the seal being considered separately.

Parts to consider

Honda CB750 / CB650 / CB550 / CB125 Carb Float ~ Replaces 16013-405-004

Carburetor float with pinFloat-and-pin product; its description states four floats used per bike, with quantity to be checked.View part

Honda CB Stock Type Float Bowl Drain Screw

Drain screw supplied with O-ringStock-type screw explicitly sold each with its O-ring; compare the fitted drain hardware.View part

Four-pack of drain-screw O-ringsFour drain-screw seals, separately offered from replacement screws.View part

Keep the float’s pin separate from inlet-needle needs

The float product supplies a pin and lists four floats used per bike. That application requirement is a quantity check, not proof of a four-float sales package. Identify the required float purchase and any separate needle requirement; a float needle is not named in the float-and-pin contents.

Check seal position and package overlap

The stock-type drain screw includes an O-ring, while the separate drain-seal pack contains four O-rings. Another product names the air-screw needle O-ring and is sold each. Compare the required positions before combining them; similar small seals should be chosen by their identified application rather than appearance alone.

Common ordering questions

Does the float description state that a pin is included?

Yes. It identifies a carb float with pin and gives replacement references, including 16013-405-004. Compare the fitted float and carburetor with that description, then confirm the purchase quantity needed for the work being planned.

Are screws included in the four-O-ring package?

The description identifies four float-bowl drain-screw O-rings. Replacement screws are separate products, including a stock-type screw with its O-ring supplied. Compare which parts are required before adding both a seal-only pack and new screw-and-seal purchases.

Can I choose the felt shaft seals from the year alone?

That product is expressly for compatible Keihin PD carburetors. Identify the carburetors on the motorcycle before selecting those felt seals. A model-year listing does not establish that a changed carburetor assembly has the specified throttle-shaft application.

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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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