40503 AC fuel pump

[Dale S.]

Did anyone read my previous post on the AC 40503 fuel pump? Dale

[Brian M.]

Re: 40503 AC fuel pump

Dale, My very original 67 327/300 #7471 had a 40503 pump on it when I purchased it. I don't know for sure if it's original to the car but it makes me wonder.

[Dale S.]

Re: 40503 AC fuel pump

Brian, From an earlier post, Joe Lucia informed me that the AC 40503 was a replacement from 1968. It replaces the AC 40433. My question was what is stamped in the flange of the 40503. I have looked at 2 that have differnt numbers stamped in the flange. One has 177S40503, the other 015R40503. I am trying to find out what the prefix means. I have a 40503 on my 62 chevy pickup and it just has 40503. NO prefix. From another web site I found that the number 6416712 on the box, is the long number for the AC 40503. Thank you for your help. Dale

[Brian M.]

Re: 40503 AC fuel pump

Dale, I have the 40503 that I removed from my car and another used spare in it's original box I'll report the #'s on the flange this eve.

[Brian M.]

Re: 40503 AC fuel pump

My spare used boxed one has 163840503 stamped into the flange. The box is marked GP.0-3.900

1# 6416712 1#40503

I have not located the one that I removed from the car.

[Dale S.]

Re: 40503 AC fuel pump

Thank you Brian