The Ausf. F tanks that received the new, longer, KwK 40 L/43 gun were temporary named Ausf. F2 (with the designation Sd.Kfz. 161/1). The tank increased in weight to 23.6 tonnes (26.0 short tons). Three months after beginning production, the Panzer IV Ausf. F2 was renamed Ausf. G.
