This brand new regulator rectifier is made from the highest quality materials. This unit is made to fit the 2005-2013 BMW F800 ST. It has been redesigned with the newest power cicuits available and has an improved heat sink capacity, making it superior to the OEM part it replaces. Internal regulation circuits accurately and efficiently control the output voltage which produces a stable output power across the RPM range. This unit meets or exceeds all factory specifications. Installation is fast and easy.

OE# 6131234550