Its best to use Sirio Plugs.
TURBO BUGGY GLOW PLUG S5 S00 1720115
TURBO BUGGY GLOW PLUG S6 S00 1720116
TURBO BUGGY GLOW PLUG S7 S00 1720117
Number 6 is fine for most conditions.
Some other makes do not fit exactly same, alternatively you can use Orion as made by the same company.
ORI88854TURBO BUGGY GLOW PLUG S5
ORI88855TURBO BUGGY GLOW PLUG S6
ORI88856TURBO BUGGY GLOW PLUG S7
Normally Sponsers provide Glow plugs!!!!!
