Alternator Terminal Insulator - BOSCH: 1 127 011 142 (BMW PN: 12 31 1 722 985)

Reproduced in perfect detail from glass filled nylon PA12 with a uniform shot peened finish. The original component is commonly broken when removing stubborn terminals that spin, or in shipping when adequate care in packaging is not practiced. 

Fits M70 alternators used on E31, E32 & E38