Idle Jet #40, Absolutely Scooters & Supply
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Idle Jet #40

Idle Jet #40

This jet will fit either the GY6 carb or the QMB139 carb. It is a little longer than most GY6 idle jets making it's performance outstanding as it reaches further into the float bowl. For most cases this is too large a jet for the 50cc QMB139.