This alternator assembly with OEM codes 51261017271 and 51261019271 fits MAN commercial trucks perfectly. It acts as the core charging component to supply stable electricity and maintain normal battery charging. Adopting high-grade copper coils and durable shell structure, it features anti-heat, anti-vibration and high efficiency performance. Made fully according to OEM standards, it is easy to install and an ideal replacement for failed or aging original alternator units.