So I replaced my airdog150 for the new 4G 165, my only question is why does the return have such a small hole (0.138)? Of course my return dumps into the filler neck and just checking to make sure this will work. Because the system they sent draws through the old sender basket. I have the draw straw drilled at the top of the tank. I think my old 150 electrical plug in is the same so I shouldnt have to replace that, right?

I guess I've never had the chance to install a 165 Airdog yet. I've got a AirDog 165 GPH pump head mounted to my 150 GPH base and works just the same as my old 150 GPH. Same pressures no real change.

Got the 4G installed and I must say its smooth no doubt, quite and pumps 18 psi at idle and wot 17. I think with a load it will come down to 16. As for the new 150 I'll be sending it back to Airdog and see what they say.

Edited March 12, 20223 yr by JAG1

Are the go to filters still Baldwin BF1275 and Donaldson P551315 ? I searched and didnt understand it very well. Sorry for beating a old horse.