These might help with identification of Aaladin pump question. The measurements of the ceramic plungers are 18.00mm diameter x 32.9mm length, the valve cages measure 20mm diameter x 14.25 thick the head is 4 3/16" wide x 3 1/4" tall the bolt pattern on the head is 31.5mm center to center from right to left and 24.0mm center to center top to bottom with a pattern like a number 8 domino piece also here's some pictures I'm looking to rebuild it or replace it depending on $.