This 12V starter relay is compatible with the following part numbers: 63070, 62135, 74900, 2875714, and 70715.It fits models including ST17, S2000, A2500, U4500, ATV2500, Terra25, LT2000, PE2.5, and X3000.The relay uses a small control current to engage the starter , supplying power to the starter motor and supporting proper starting function.Construction includes copper conductors, plastic housing, and metal components.The relay operates at 12V and is rated for 250A.