Hayward Filter Head Screw Set for Perflex Extended-Cycle DE Filters W3EC40AC W3EC50AC | ECX10271A DE Filter Media and gasket kits are not

and gasket kits are not interchangeable between them

Using an incorrect impeller will result in reduced flow

W3C12002 Compatibility is based on Hayward parts documentation and available OEM records

Pentair 1-1/2" 2 Way Compool PVC Valve - #263038

replace the diffuser gasket as a matter of course even if it appears intact — compression set and minor cracking are difficult to spot until the pump is reassembled and running

Hayward Filter Head Screw Set for Perflex Extended-Cycle DE Filters W3EC40AC W3EC50AC | ECX10271A DE Filter Media and gasket kits are notThe Hayward Filter Head Screw Set (ECX10271A) is the OEM replacement hardware set for securing the filter head on Perflex Extended Cycle DE filters. This screw set maintains the integrity of the filter head assembly, ensuring a secure, leak free connection between the filter head and body during operation. Replacing worn, corroded, or damaged screws with this OEM matched set restores proper clamping force and prevents head movement under operating