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1985 Honda CB450SC Nighthawk Later Carb Kit and Inlet Needle Choices

For carburetor service on a 1985 Honda CB450SC Nighthawk, match the later carb kit to the equipment fitted and assess the inlet needle’s mating seat separately. The kit establishes one-carb coverage without an exhaustive parts inventory. The separately listed 16155-413-751 needle supplies one needle and excludes its seat.

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Honda CB1100 CB1000 CB900 CB750 float bowl gasket

Honda CB1100/CB1000/CB900/CB750 Float Bowl Gasket

$9.50 USD
20-8031
Replace your DOHC CB float bowl gasket with this Float Bowl Gasket (O-ring). Broad fitment across the 1979-82 CB750 family, CB750SC Nighthawk, CB900/CB1000/CB1100, CB650...
Honda CB1100 CB1000 CB900 CB750 CB700 carb float needle 16155-413-751

Honda CB Carb Float Needle ~ Replaces 16155-413-751

$8.95 USD
48-5011
Replace your DOHC CB float needle (only) with this Float Needle, replacing OEM #16155-413-751.Key Features• Float needle (only)• Replaces OEM #16155-413-751• Honda part name:...
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Honda CB450SC carb rebuild kit

1983-86 Honda CB450SC Carb Rebuild Kit

$17.95 USD
48-1397
Rebuild your CB450SC Nighthawk carb with this Carb Rebuild Kit.Note: each kit rebuilds one carb, order the quantity you require.Key Features• Carb rebuild kit•...
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1985 Honda CB450SC Nighthawk · Carb Kits & Inlet Needles Buying guide

Use the carburetor identity to set kit coverage and separate inlet requirements

The later rebuild kit covers 1983–86 CB450SC carburetors, with two kits specified for a complete system. The needle listing states two for the listed CB450 twins and no seat supplied. A separately offered bowl gasket is sold individually; its four-gasket note belongs to a four-carburetor rack.

Parts to consider

1983-86 Honda CB450SC Carb Rebuild Kit One-carb later Nighthawk kitOne kit rebuilds one matched carburetor; two cover the listed complete CB450SC system.View part Honda CB Carb Float Needle ~ Replaces 16155-413-751 16155-413-751 needle supplied without its seatOne needle per item; the listed CB450 applications use two for full needle renewal.View part Honda CB1100/CB1000/CB900/CB750 Float Bowl Gasket Individually supplied bowl-joint gasketSeparate bowl gasket includes the current model application; count serviced joints without borrowing the four-carb rack total.View part

Confirm individual kit pieces instead of treating coverage as an inventory

The kit’s full listing names model coverage and comparison points but does not publish an exhaustive component list or exact jet sizes. If a needle, gasket or other specific piece is central to the repair, confirm its inclusion before adding a separate purchase. The photograph is not a substitute for that contents confirmation.

Assess the mating seat before selecting individual float needles

The needle listing calls for inspection of the seat and fuel inlet for wear, corrosion or debris. A correct seat or valve assembly may need separate service when it cannot seal with a new needle. Verify float movement and use the correct Honda float-height specification rather than an invented setting.

Parts ordering FAQs

What should I compare when the motorcycle carries replacement carburetors?

Use the carburetor model and compare bowl shape, jets, needles, gaskets and O-rings with the original pieces, as the kit listing specifies. The listed 1985 application does not identify every replacement assembly; confirm that component match before relying on one-kit coverage.

What retained parts should influence an order for the individually sold float needle?

Inspect the mating seat and fuel inlet for wear, corrosion or debris. The 16155-413-751 item includes one needle without its seat. If the correct seat or valve assembly also needs service, account for that requirement separately from the needle purchase.

How are individual needle and rebuild-kit quantities stated for complete CB450SC service?

The later kit specifies one package per carburetor and two for the complete system. The separate needle listing supplies one needle per item and states two for the listed CB450 twins. Confirm any needed needle’s kit inclusion before combining both purchases for the same positions.

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