ARCO Marine Premium Replacement Outboard Alternator w/Multi-Groove Pulley - 12V 50A [20850]

ARCO Marine Premium Replacement Outboard Alternator w/Multi-Groove Pulley - 12V 50A [20850]

Replacement alternator that will fit 1.5L & 3.0L Mercury Outboard, 12 Volt, 50 AMP, Internal Fan, Multi-groove serpentine pulley included, Includes wire/plug connector.

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 Outboard Alternator w/Multi-Groove Pulley - 12V 50A [20850] Product Specifications

Technical Specifications:

• Voltage – 12V

• Amperage Output – 50 Amps

• Alternator Type – Premium Replacement Marine Outboard Alternator

• Pulley Type – Multi-Groove Serpentine Pulley

• Regulator Type – Internal

• Cooling – Open-air cooled

• Polarity – Negative Ground

• Rotation – Clockwise (CW)

• Housing Material – Marine-grade aluminum

• Finish – Black corrosion-resistant coating

• Mount Type – OEM-style direct replacement

• Weight – Approx. 10.2 lbs / 4.63 kg

• Water Resistance – Built for harsh marine environments

• Warranty – Limited manufacturer warranty

Mounting Application:

Direct replacement for select outboard motors requiring a 12V, 50A alternator with a multi-groove serpentine pulley. Ideal for Mercury and other compatible marine outboards, offering reliable charging and easy installation.

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:

DELCO Alternator 8600514
DELCO Alternator 19020704
DELCO Alternator 19020707
MERCURY Alternator 8M0064020
MERCURY Alternator 8M6000803
MERCURY Alternator 828506
MERCURY Alternator 875286A-1
MERCURY Alternator 881247A1
MERCURY Alternator 889956
SIERRA Alternator 18-6455
PROTORQUE Alternator PH300-0031
PROTORQUE Alternator PH200-T010
PROTORQUE Alternator PH200-T015
PROTORQUE Alternator PH200-T016
MPPARTS Alternator TRM0009
MPPARTS Alternator TRM0066

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

Product FAQs

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