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

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

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.

Features:

• 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

Product Specifications

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

Technical Specifications:

• Voltage – 12V

• Amperage Output – 70 Amps

• Alternator Type – Premium Replacement Marine Alternator

• Pulley Type – Single-Groove V-Belt Pulley

• Regulator Type – Internal

• Cooling – Open-air cooled

• Polarity – Negative Ground

• Rotation – Clockwise (CW)

• Housing Material – Marine-grade aluminum

• Finish – Corrosion-resistant black coating

• Mount Type – OEM-style direct replacement

• Weight – Approx. 11.2 lbs / 5.08 kg

• Water Resistance – Designed for harsh marine environments

• Warranty – Limited manufacturer warranty

Mounting Application:

Designed as a direct replacement for marine engines requiring a 12V, 70A alternator with a single-groove V-belt pulley. Ideal for inboard and sterndrive marine applications, offering dependable power and marine-grade durability.

Product Manual

Quick Guide (pdf)

Product Warranty

ARCO Marine Warranty

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 arcomarine.com/product-registration 

Replaces:

MERCURY 32701
MERCURY 47456A1
MERCURY 56045
MERCURY 59755
MERCURY 69729
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.

Product FAQs

N/A