The Pentair 356790 EQ Series motor adapter is designed for compatible EQ Series pump applications where the motor-to-pump interface component needs replacement. An adapter like this is useful because it helps connect related motor and pump components correctly, supporting proper fit and alignment within the assembly.Replacement is often helpful when the original adapter is cracked, worn, damaged, or no longer suitable after disassembly. Installing the proper Pentair motor adapter can help restore cleaner assembly fit and improve confidence in the repair.This OEM motor adapter is a practical service part for compatible EQ Series pump systems that need the correct connection hardware between major components. OEM Pentair EQ Series motor adapter Fits compatible EQ Series pump applications Helps support proper motor-to-pump fit and alignment Useful when the original adapter is damaged or worn Supports cleaner and more dependable pump assembly service