Voltage 14, Amp 170, Remarks 3 This Alternator has a COM terminal on the regulator. It is recommended that the OEM number is used to check suitability before ordering., Source Valeo, Grooves/pulley 6, Regulator type IR, Belt Adjustment Bracket Hole 1 10.50, Mounting Bracket Distance 76.00, Radius 93.00, Pulley Diameter 53.30, Prod. info BN/OE, Bracket Hole Size Rear M10, Communication BSS, Pulley SP, Pulley Distance 60.50, Servicing BMW, Plug no. 1 PL86, Radius 2 93.00, B+ M8, Rotation CW, Bracket Hole Size 1 10.70, Terminal type COM, Holder Arm Width 28.00, Belt Adjustment Bracket Hole Position 45, Total Length 185.50, Position 5, B+ Position 52