Brand New - "Gurtner Style" AR2-12 Aftermarket Carb / Carburetor  - 12mm.
NOTE: This is an Aftermarket carb and not a Genuine Gurtner Brand Carb. But they are identical in every way and perform great, at half the price. Even if you just use it for all of the replacement parts, you are saving a lot of money compared to the original.
FITS THE FOLLOWING MODELS:
Motobecane 40v, 50v, Mobylette, and Peugeot 103.