The Gear Box 14.4 /18V with Manufacturer Part Number (MPN)2609111566 is a genuine Bosch spare part for the following models:
Bosch 3 601 JD6 000 Gsr 14,4 V-Ec Cordless Drill Driver 14.4 V / Eu
Bosch 3 601 JD6 100 Gsr 18 V-Ec Cordless Drill Driver 18 V / Eu