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This is the fuel pump I just took out of my '51 200 coupe (288 cid). I cannot find any markings that identify it. I'm thinking it may be an aftermarket replacement. I'd like to get it refurbished, but don't know what kind it is.

Anyone know who made it?

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Hi mtpackard51 aka Turbopackman2, I'm firmly convinced that our experts will help you as soon as time permits. To shorten the time you could skim over the project blog from Charles (51Packard). It contains a lot of information on how to identify another fuel pump. Perhaps you can benefit from the given information. It starts from "post" --> #490, intermittently extending over three pages until #513 and especially includes a --> fuel pump conversion chart, provided by Dave (O_D).

Additional I entrust you to check the following quotation from Howard (HH56), dated 2012/3/29:

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Thanks for the links. It looks alot like the AC "CV" model from maritime drag racing. But it doesn't have this little thing (circled in red)

What is ist?

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When you get ready to overhaul it, try Terrill Machine in DeLeon TX. Good, fast and reasonable.

The "little thing" circled in red is just a pulse dome and shouldn't be relied on to differentiate one pump from another. It can be present or absent on all manner of pumps though more common on earlier pumps back into the 30s. In your photo #2 there may be a threaded hole and plug in the fuel outlet where the pulse dome could be attached. As a practical matter it really makes no difference in performance if it's there or the opening is plugged as is often case. It's function was to minimize the pulses of fuel and make a slightly more uniform flow. Obviously later experience by pump makers and car manufacturers showed it wasn't worth the added cost.

What brand the original pump was should have no affect on having it rebuilt, just send it to a well-regarded rebuilder like Gould Rebuilders or Terrill.

Dave, I agree and add the belief that its name was "air dome".

If you look at BigKev's fuel pump rebuild how to, his looks a lot like yours. He has a '54. Maybe you have a pump from a later model car?

Don't worry about what kind of fuel pump it is....send it to Feltz Terrill @ Terrill Machine, Deleon, TX and he can tell you and send it back rebuilt. He has rebuilt all fuel pumps on all my cars--excellent work, reasonable

The arm is different than on the one on my '54 Clipper. My Clipper has a sliding arm saddle, this one does not.

Thanks again for all the input. I've already made arrangements to send it off to Gould.