Dellorto Float fast flow needle valve, 3.50, PH/VH, Viton, MB

This MB made 3.5mm fast flow float needle valve is used on PH and VH type Dellorto carburettors to help solve the fuel starvation problem they suffer when used on Lambrettas and Vespas when fitted with a standard 2mm smaller valve.

Made from Viton to help with modern fuels.

These work on any engine of any size standard or tuned which are using smaller valves.

TIP - DO NOT OVER TIGHTEN THESE they will snap in position, very little torque is required to nip these up, use a small smear of grease on the threads when fitting.