Ok, I didn't get much help on this one but through a little ingenuity I was able to measure what I had left. I thought I'd update for those looking in the future. For the pump pictured, the correct cylinder size is 12.5 x 25.5". Now...if anyone has one of those lying around, please let me know!


Last edited by petropumps; Wed Aug 24 2016 04:00 PM.