Like a lot of other parts that are special to the Model G Tractor, this fuel sediment bowl is no different. The model G has an inline fuel bowl which attaches right to the Carburetor via a small 1/8" pipe extension. Inlet and outlet are both NPT 1/8" pipe thread.  
 
This bowl assy will also fit these model Tractors as well:
Model 170- serial # 7501-up  (gas)   Models: 175, 180  ALL  (gas)