Our Polyurethane Diaphragms are a direct fit for your Indeco MES521. The OEM part number is 0501490.
Big Hammer Co is an aftermarket manufacturer for all the brands we sell. Big Hammer Co is not endorsed or sponsored by, or in any way associated with Indeco. This product is an aftermarket part.
Any use of or reference to the Indeco trademark is for the sole purpose of indiIndecoing compatibility or product fit, and is not meant to imply any affiliation or relationship between Big Hammer Co and Indeco and/or the Indeco Trademark.