ARCO Marine

ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V, 55A [60050]

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Premium Replacement Alternator with Single Groove Pulley - 12V, 55A

Premium replacement alternator that will fit late model Mercruiser, 12 Volt, 55 Amp, Internal regulator. 2-inch mounting foot. Single groove pulley included.


  • All alternators are engineered for performance and reliability
  • All alternators are engineered and manufactured with precision and quality
  • All alternators must meet or exceed OEM performance before being boxed

Warranty Information:

When properly installed, all ARCO products are warrantied against defects in materials and workmanship for a period of 12 months for leisure use and 90 days for commercial or racing applications. 

Add an extra year of warranty to your rotating electric ARCO product (Tilt/Trim Motors, Alternators, Outboard Starters, and Inboard Starters) when you register your product within 30 days of purchase. You can register your product by visiting 


MARINE POWER Alternator 1210-000
MERCURY Alternator 12449
MERCURY Alternator 78403A1
MERCURY Alternator 78403A2
MERCURY Alternator 817119A1
MERCURY Alternator 817119A4
MERCURY Alternator 92497A3
MERCURY Alternator 98555
MERCURY Alternator 98555A1
SIERRA Alternator 18-5957
SIERRA Alternator 18-5966

This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.


  • Amperage: 55A
  • Voltage: 12V
  • Box Dimensions: 7"H x 8"W x 8"L WT: 9.75 lbs
  • UPC: 693006001258

Quick Guide (pdf)