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1973 Honda SL350K3 Fuel System Parts

The 1973 Honda SL350K3 fuel selection covers float-bowl sealing O-rings and a screw kit for two carburetors. Locate the leak or worn hardware first, then match the parts to the carburetors actually fitted, especially on a motorcycle with replacement bowls.

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Honda CB550 CB500 CB400 CB350 float bowl gasket

Honda CB550/CB500/CB400/CB350 Float Bowl Gasket

$9.95 USD
20-8032
Replace your CB350F/CB400F or CL350/SL350 float bowl gasket with this Float Bowl Gasket (O-ring).Key Features• Float bowl gasket (O-ring)Fitment / Compatibility• Honda CB350F (1973‑74)...
New
Honda CB350 CL350K0 CL350K1 CL350K2 CL350K3 carburetor screw kit

Honda CB Carburetor Screw Kit

$17.57 USD
48-0795
Refresh your CB350 or CL350 / SL350 carb screws with this Carburetor Screw Kit. Enough for 2 carbs. Get a new set of screws...
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1973 Honda SL350K3 · Fuel System Buying guide

Separate bowl sealing from worn carburetor hardware

A bowl O-ring seals the bowl joint; the hardware kit supplies drain screws with their own O-rings plus fastening screws. Both have explicit 1973 SL350 applications, but they address different repair points.

Parts to consider

Honda CB550/CB500/CB400/CB350 Float Bowl Gasket Float-bowl sealing O-ringO-ring-style bowl gasket with a listed 1970–73 SL350 application. Compare the fitted bowl and sealing groove if the carburetor has been changed.View part Honda CB Carburetor Screw Kit Two-carburetor screw kitHardware for two carburetors, including two drain screws with O-rings and three sizes of screws with lock washers.View part

Order for the leak location

The bowl gasket and the drain-screw O-rings seal different areas. Have the leak located before ordering, then inspect the corresponding bowl groove or drain assembly. The screw kit includes two drain screws with O-rings; its remaining fasteners address hardware renewal rather than the bowl sealing joint.

Plan the hardware alongside the seals

The screw kit covers two carburetors and includes eight 4 × 10 screws, eight 4 × 8 screws and two 5 × 12 screws, each group with lock washers, plus the two drain screws. Match each position before assembly; confirm the bowl gasket’s package quantity when planning multiple seals.

Buying questions

Should I buy the bowl gasket for a leak at the drain screw?

First confirm the leak source. The bowl gasket seals the bowl joint, while the screw kit includes replacement drain screws with O-rings. Choose the part for the identified sealing point rather than treating both seals as interchangeable.

Does one screw kit cover both carburetors?

Yes, the kit is specified for two carburetors. It includes two drain screws with O-rings and the three itemized groups of fastening screws with lock washers. Inspect the fitted carburetors before renewing their hardware.

What changes if my motorcycle has replacement carburetors?

Identify their maker and model and compare the bowl groove, drain assembly and screw positions. The stated SL350 application describes the listed parts’ intended use; a later replacement assembly may have different sealing or hardware requirements.

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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