The Zerostart Engine Heater 3100063 is designed for BMW 6 Cylinder models 1982-91 L6 - 2.5, 2.7, 3.5L. This model is to be installed in the 2nd RF at (point element) 4 o'clock. This product features a 44mm Bore Diameter. The replacement cord for this item is model no. 3600006.