We have replacement K'nex parts!
Type: Replacement Parts
Brand: K'nex
Color: Green
Material: Plastic
Part: Battery Powered Motor Green
MPN: 22722
Quantity: 1
Features: Battery Operated
Requires: 2 AA Batteries Not Included
Measurements: 4 in. x 2 7/8 in. x 1 1/4 in. approximately
Condition: Used, In played with condition. Tested and works! Please see pics!