This genuine JCB 71420103 Alternator Regulator is designed for 12V electrical systems with an 85A output. It ensures stable power regulation for the alternator across a wide range of JCB agricultural and construction machinery, including 3CX, 4CX backhoe loaders, Loadall telehandlers, Fastrac tractors, and various excavators. This OEM component is crucial for maintaining optimal charging performance and electrical system integrity.