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ARCO Marine

ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V 70A [20102]

ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V 70A [20102]

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Regular price $149.95 USD
Regular price $221.35 USD Sale price $149.95 USD
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Premium Replacement Alternator with Single Groove Pulley - 12V 70A

Replacement alternator that will fit Mercruiser, BRP-OMC, 12 Volt, 70 Amp, Self-exciting, Ignition protection screens, Internal regulator, Negative ground, 1-wire connection, 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 


Sierra 18-5950

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


  • Amperage: 70A
  • Voltage: 12V
  • Box Dimensions: 8"H x 8"W x 9"L WT: 12 lbs
  • UPC: 693006001128

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