Lego Electric. Tested and working fine. There is no black axle to attach a gear to. 4.5v Motor.
LEGO ELECTRIC - 12 V/4,5 V grau Einzelzinken 14 Nieten Draht (765c01, x466) EUR 5,76 - PicClick DE
PARTI TECNICHE PER servotreno multipotenza costruzione motore elettrico per LEGO EUR 5,47 - PicClick IT
LEGO BOAT GREY + Electric Boat Motor Long 26cm Wide 10cm £16.95 - PicClick UK
Piezas y ladrillos de LEGO, Juegos de construcción LEGO, Juegos de construcción, Juguetes - PicClick ES
Lego Electric - 4.5v Technic Motor - Grey - 3 Prong - NO Axle (6216) - 31
Exploring-67-years-of-LEGO/datasets/sets.csv at master · ApoorvRusia/Exploring-67-years-of-LEGO · GitHub
Minifigures pièces, access., Jeux de construction, Jouets et jeux - PicClick FR
Lego Technic - Wikipedia
LEGO TECHNIC ELECTRIC Motor 4.5 V 17 x 6 x 5 Tested and Working £12.99 - PicClick UK
LEGO ELECTRIC - 4.5v Technic Motor - Grey - 3 Prong (6216) - 33 EUR 11,71 - PicClick IT
Kits complets et packs, LEGO, Jeux de construction, Jouets et jeux - PicClick FR
BrickScout - Produktsuche nach 837 in Einzelteile
Lego Electric - 4.5v Technic Motor - Grey - 3 Prong - NO Axle (6216) - 31
Lego Technic - Wikipedia