Original Bing 2.20 jet holder for Bing SRE/SRA carburetors, for 3.5mm main jets.

 

Originally mounted on Puch, Sachs, Velux, etc.

 

Bing original product.

 

Overall length: 29.5 mm

Diameter: 7 mm

Top thread M 6 x 0.75

Bottom thread M 3.5

 

The carburetor mixing tube, also known as the jet holder, is a part in the carburetor where the main jet is also attached.

In such a mixing tube, the gasoline is mixed with air, producing the so-called air-fuel mixture.

Such mixing tubes are not all the same, as each manufacturer has its own design for each model. They differ in size, number, and arrangement of the holes.

A jet holder is rarely replaced, as it is difficult to know what is correct and what is wrong.

Only absolute specialists know what a replacement would achieve.