Aftermarket Mercury 821663A1 Alternator
Replacement Nippon Denso alternator to replace Mercury and Mariner 225, 250 and 300HP 3.0L carburetor and EFI models. Features internal fan, regulator and single V belt pulley.
- 12V
- 50A
Replaces - 101211-3020, 101211-3021, 821663, 821663A1, ND171, 18-6960, 9-19200
