Here is the correct "long-reach" NGK B6ES spark plug for vintage Vespa Scooters like the Rally and the Super Sport. It will also work on those classic and very collectable Italian-made Lambretta models.
Not all Vespas from back in the day used the same size plugs, so please refer to our Compatibility tab for a correct list of compatible Vespa models.
Name: NGK B6ES
Thread: 14 mm
Reach: 3/4" (19 mm)
Heat: 6 (medium)