For use with 18-5953-1 alternator conversion kits installed on Mercruiser (Model 470) 3.7 liter aluminum block engines with serial number 6902288 and Up.
Fits OMC 3.0L, 4.3L, 5.7L, 7.4L (1995-1998), 5.0L, 5.8L, 8.2L (1993-1998) and Mando for late model Volvo Penta. 12v, 65A with internal regulator and single-groove pulley.