BGM ORIGINAL countersunk screw for fastening the carburetor pan on the engine. Suitable for all Vespa largeframe engines with rotary valve control up to 1984. The screw used by Vespa to attach the carburetor pan on the engine does not correspond to any common DIN standard. Conventional DIN screws have a countersunk head that is too large, which means that the screw protrudes over the sealing surface. The BGM [...]
