I keep seeing parts references indicating the Iseki TX1500F is the same machine/ crossover as the Bolens G174 and others saying the G174 and the 2160 are the same/ crossovers. That is my observation, I cant claim to know if that is truly accurate but might be helpful. Again, I would start by checking online salvage yards for parts machines. Just curious, are you located in the U.S.?
Home | West Kentucky Tractor Parts | Kevil, KY | The Parts You Need, At A Price You Can Afford! lists a G174 parts machine in stock ( who knows if they have a front axle but worth a shot) I would also contact
Sheaffer's Town & Country Tractor may have a parts machine but if not they can often times order obscure parts from Japan. Len Scheaffer is one of the undisputed heavyweight champs of grey market tractors knowledge and parts sourcing.