Older diaphragm pump parts can be difficult to find and repair kits or overhauls even trickier. However, a few steps can help you identify the components you need to get your pump up and running again. Replacement diaphragms are the easiest to match. We come across Mud Sucker, Home Lite, Mud Hog, AMT, Tsurumi, Multiquip, Wacker and Honda diaphragm pumps all the time that we can match. Repair kits like pump rods, covers, flapper valves and gaskets might be a bit tougher.