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1965 Honda CB450K Carburetor Rebuild Kits & Jetting

A carburetor service kit and a single pilot jet are different purchases for your 1965 CB450K. Use the kit for its listed replacement components, or select the separate #35 jet only after confirming the installed jet pattern and intended size.

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Honda CB450 premium carb rebuild kit

1965-74 Honda CB450 Premium Carb Rebuild Kit

$21.95 USD
48-1228
Restore smooth fuel delivery with this Premium Carburetor Rebuild Kit, designed to refresh worn components inside your carburetor and restore proper performance. This kit...
Honda CB500T CB450 CB360 CB350 slow pilot jet #35 99124-286-0351

Honda CB500T / CB450 / CB360 / CB350 Slow / Pilot Jet #35 ~ Replaces 99124-286-0351

$7.00 USD
48-1587
Restore clean idle and low-speed fuel metering with this aftermarket Keihin-style slow / pilot jet, size #35. It replaces Honda OEM #99124-286-0351 for the...
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1965 Honda CB450K · Carb Rebuild & Jetting Buying guide

Read the contents before choosing a kit or jet

The premium kit includes a #125 main jet, #40 pilot jet and D8 needle, plus sealing and float-valve parts. The separate pilot jet is #35 and references Honda 99124-286-0351; it is not the same size as the kit’s pilot.

Parts to consider

1965-74 Honda CB450 Premium Carb Rebuild Kit Premium carburetor rebuild kitOne-carburetor service kit with bowl and top gaskets, O-rings, float needle, #2.0 seat, #125 main jet, D8 needle, #40 pilot jet, mixture screw and other listed small parts.View part Honda CB500T / CB450 / CB360 / CB350 Slow / Pilot Jet #35 ~ Replaces 99124-286-0351 #35 slow / pilot jetSeparate aftermarket Keihin-style pilot jet referencing Honda 99124-286-0351. Check the jet pattern and confirm that #35 is the size you require. Sold individually; order the quantity required.View part

Check more than the year label

The kit is listed for the 1965 CB450K, but an old motorcycle may carry carburetors or jets changed during an earlier repair. Compare the carburetor and removed components before installation. Keep the kit’s #125 main, #40 pilot and D8 needle specifications separate from any assumptions about original calibration.

Choose the repair parts you actually need

A separate pilot jet supplies a metering part; it does not supply the gaskets or float-valve components in the rebuild kit. Conversely, the rebuild kit’s published contents do not list a replacement float. Inspect the parts you intend to reuse and check the contents before committing to a service order.

Carb kit and jet buying questions

Is the separate #35 pilot jet the same jet supplied in the kit?

No. The kit lists a #40 pilot jet, while the separate listing is #35. Check the installed jet pattern and required size. The guide does not identify either size as the original calibration for your carburetors.

Does the premium kit include a new float?

The published contents list a float needle and #2.0 seat, but not a replacement float. Those are different components. If the float itself needs replacement, do not assume that buying this kit will cover it.

How many kits should I order for a full carburetor service?

Each premium kit services one carburetor. Count the carburetors you plan to rebuild and order accordingly. The separate #35 pilot jet is sold individually; it is an additional choice only if that size suits your setup.

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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