The Stearns 50400350001B is a Size 3.5 magnet body and coil assembly designed for CRS Clutch Roto Sprocket and CRP Clutch Roto Sheave units. This OEM replacement component (Part Number 8020552) ensures reliable electromagnetic clutch operation in industrial power transmission systems. Compatible with Stearns Size 3.5 clutch assemblies for equipment maintenance and repair.