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1985 Honda CB650SC Nighthawk Petcocks & Tank Parts

Check the fitted tank and fuel valve before ordering for your 1985 CB650SC. Choose between replacing the petcock and renewing its service parts, then inspect the front tank cushions while access is clear. Modified tanks need their own connection check.

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Honda CB650SC CB550SC fuel petcock 16950-MA6-035

1983-85 Honda CB650SC / CB550SC Fuel Petcock ~ Replaces 16950-MA6-035

$54.95 USD
33-0010
Keep fuel flowing reliably to your carburetors with this Fuel Petcock, designed as a direct replacement for several original Honda fuel valve assemblies. This...
Honda CB front fuel tank rubber cushion 17611-KE8-000

Front Fuel Tank Rubber Cushion ~ Replaces Honda OEM 17611-KE8-000

$5.50 USD
27-5520
This aftermarket front fuel tank rubber cushion replaces Honda OEM 17611-KE8-000 on the listed Honda CB-series applications. It mounts to the frame and supports...
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Honda CB700 CB650 CB550 CB450 fuel petcock repair kit

Honda CB700 / CB650 / CB550 / CB450 Fuel Petcock Repair Kit

$27.95 USD
20-0020
Rebuild your Nighthawk fuel petcock with this Fuel Petcock Repair Kit. Includes a diaphragm, spring, and 2 O-rings.Key Features• Fuel petcock repair kit• Includes...
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1985 Honda CB650SC Nighthawk · Petcocks & Tank Mounts Buying guide

Identify the valve and tank mounts before ordering

Compare the fuel valve actually fitted with the replacement and repair-kit applications. Inspect the tank mounting rubber as a separate repair decision, particularly if the tank has been changed.

Parts to consider

1983-85 Honda CB650SC / CB550SC Fuel Petcock ~ Replaces 16950-MA6-035 Replacement fuel petcockPetcock specified for the CB650SC 1983–85 Nighthawk application.View part Honda CB700 / CB650 / CB550 / CB450 Fuel Petcock Repair Kit Petcock repair kitPetcock service kit for the listed Nighthawk fuel-valve application.View part Front Fuel Tank Rubber Cushion ~ Replaces Honda OEM 17611-KE8-000 Front tank rubber cushionAftermarket replacement for reference 17611-KE8-000, sold individually.View part

Match the replacement valve by reference

The replacement petcock lists 16950-MA6-035, 16950-MA6-025, 16950-ME5-005 and 16950-ME5-015. Compare those references with the valve and tank actually fitted before choosing the assembly.

Check the repair-kit inventory against the fault

The repair kit lists a diaphragm, spring and two O-rings. Compare that inventory with the parts needed after inspecting the valve; confirm any other essential component rather than assuming the list covers every repair.

Ordering questions

Is a tank connection thread specified for the replacement petcock?

The available specification does not establish a thread measurement. Compare the actual tank connection or have it confirmed before ordering for a modified or uncertain tank.

Will the repair kit fit a petcock that was replaced previously?

Confirm the identity of the valve and the kit application first. Both products list this motorcycle, but the descriptions do not establish that kit 20-0020 rebuilds the listed replacement valve or an unidentified aftermarket valve.

When should I replace the front tank cushions?

The cushion listing identifies cracked, flattened, missing or age-hardened rubber as reasons for replacement. Compare the existing mount shape and reference, especially with a changed tank, then order the individually supplied cushions needed.

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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