Spark plug for t5

Schaltroller / Classic Motoscooters Vespa Largeframe
1

wot is the correct ngk plug for bog standard t5 i am using b7es gone through a couple on long journeys … [?[]

2

thanks m8 will get one 2morrow …

3

hello,

it is B9ES.
other equiv.= Bosh W3CC, Champion N-2C

                                  :p