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The Thomas 5078S, Thomas 5080S, Thomas 5100, and Thomas 5120 diaphragm replacement kit includes the necessary components for replacing the diaphragms on your Thomas model.
This kit includes 2 diaphragms with mounting blocks, 2 heads with air valves, and a FREE replacement air filter.
Item #:DRK120
Manufacturer:Thomas
This repair kit fits the following models: