March 0125-0083-0200 6mm Bore Drive Magnet 0125-0083-0200

The March 0125-0083-0200 Drive Magnet is an OEM magnetic-coupling component with a 6 mm bore designed for compatible March magnetic drive pump assemblies. It is used on the motor side of the pump to transfer rotational force magnetically to the internal impeller magnet without requiring a direct motor shaft through the wet-end housing.

March officially identifies 0125-0083-0200 in the BC-2CP-MD 24V brushless configuration and in selected Series 809 24V brushless pumps. Correct bore size is essential because March manufactures several similar drive magnets with different motor-shaft dimensions.

Part of the Sealless Magnetic Drive System

The drive magnet is one of the key components that makes sealless magnetic-drive operation possible. As the motor rotates the external magnet, magnetic force drives the impeller magnet inside the isolated wet end. This removes the need for a conventional rotating shaft seal between the motor and pumped liquid.

6mm Bore Configuration

The 6 mm bore distinguishes 0125-0083-0200 from parts such as 0125-0083-0100 with a 0.250-inch bore. Although these drive magnets may serve similar functions, they should not be assumed interchangeable because motor shaft diameter and pump configuration must match.

Compatible Pump Families

March parts breakdowns show this drive magnet in compatible BC-2CP-MD brushless pumps and selected 809-PL-HS-C and 809-SS-HS-C 24V brushless assemblies. Compatibility should always be verified using the exact pump model, motor and original drive-magnet part number.

Replacement Guidance

When replacing a drive magnet, inspect the motor shaft, motor bracket and corresponding internal magnetic components for damage or abnormal wear. Selecting the correct March 0125-0083-0200 helps maintain the intended magnetic coupling and alignment of compatible 6 mm motor-shaft assemblies.