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1967 Honda CB450K Two-Gauge Carburetor Synchronizer

The universal synchronizer offered for the 1967 CB450K includes long and short threaded extensions as well as two gauges. Compare those pieces with the connection method your fitted carburetors require. A supplied adapter does not establish that a matching vacuum port is present.

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Universal motorcycle carburetor synchronizer vacuum gauge 2 carb synchronizer

Universal Motorcycle Carburetor Synchronizer Vacuum Gauge ~ 2 Carb Synchronizer

$54.95 USD
37-0003
Carburetor and throttle body synchronizer kit for bikes with 2 Carbs. Makes synching your carburetor setup fast and easy! For use with Honda, Kawasaki,...
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1967 Honda CB450K · Carburetor Tools Buying guide

Compare adapter length, thread and access together

The listed extensions are 180mm and 65mm long with 5mm threads. Their dimensions help you assess the measuring setup after identifying usable take-off points; they do not confirm a stock CB450K connection or a complete carburetor repair kit.

Parts to consider

Universal Motorcycle Carburetor Synchronizer Vacuum Gauge ~ 2 Carb Synchronizer Two-carburetor synchronizer with extensionsUniversal kit with two gauges, bracket, hoses, damping valves and instructions. Both 180mm and 65mm extension lengths are listed with 5mm threads.View part

Select the setup from the actual connection

Check thread size and access at the suitable vacuum take-off before deciding how to use the supplied extensions. Neither a long adapter nor a short one solves an unidentified connection requirement. Follow the appropriate service information for the carburetors and intake fitted to your motorcycle.

Read what belongs to the measuring kit

The descriptions list gauges, a bracket, hoses, damping valves, threaded extensions and instructions. They do not establish a dedicated CB450K connection kit or replacement carburetor internals. Confirm any separate connection pieces you require rather than assuming the included equipment completes every possible setup.

Buying questions

Are the two extension lengths separate product choices?

The same kit description lists 180mm and 65mm extensions, both with 5mm threads. It does not describe two alternative kits. Check which supplied pieces suit the connection and available access on the intake being measured.

Can a different extension length solve a thread mismatch?

Length and thread compatibility are separate checks. Both listed extension lengths have 5mm threads. Identify the actual intake connection and an appropriate measuring method before choosing any additional fitting; do not assume a longer extension changes the connection requirement.

What if the original intake has no obvious measuring port?

The universal listing does not verify an accessible stock CB450K vacuum connection. Consult the service information for the carburetors actually fitted and resolve the measuring connection first. The supplied adapters should not be treated as proof that a port exists.

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