ACDelco 170 Amp Alternator - New - 13507127 Part #: 13507127 Line: ACD ACDelco 170 Amp Alternator - New 2 Year LIMITED WARRANTY Fan Type: Internal Polarity: Positive Rotation Direction: Clockwise Voltage Regulator Type: Internal New Or Remanufactured: New Pulley Included: Yes Pulley Type: Decoupler Pulley Diameter (in): 2-1/4 Inch Voltage (V): 13 Volt Pulley Diameter (mm): 57mm Amperage (A): 170 Amp OE Manufacturer: Denso Number Of Pulley Grooves: 5 One Wire Capable: No AC Tap: No Brushless Design: No Pulley Belt Type: Serpentine Cooling Method: Air Plug Clock Position: 10:00 Show More Show Less