PMO Carburetor Syncrometer — Airflow Balancing Tool, Made in Germany | PMO & Weber Carbs (PM-O401-0) mod-signature It is a wear item

It is a wear item and should be replaced with the points during normal tune-up service

Configuration: Left side (driver) only

this is the kit that goes back together right

(2) -3 AN banjo fittings

They are for 94–96mm bore Type 4 / 2

PMO Carburetor Syncrometer — Airflow Balancing Tool, Made in Germany | PMO & Weber Carbs (PM-O401-0) mod-signature It is a wear itemYou cannot tune six throttle bores by ear. The PMO Carburetor Syncrometer (PM O401 0) is the German made airflow gauge that turns carburetor balancing from guesswork into a measurement seat it over one throat, read the flow, move to the next, and adjust until they match. It's the difference between an engine that idles and one that idles right. Features Direct airflow measurement at each throttle bore, so you balance to a number instead of a feel.