Arco 20850 12v 50a Outboard Alternator With Pulley
by ARCO Marine

Price:  $390.34
MFG Part:  20850
UPC:  693006008219
Condition:  New

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ARCO Marine 12V 50A Outboard Alternator with Multi-Groove Pulley

This premium replacement alternator is designed to fit 1.5L & 3.0L Mercury Outboard engines. It operates at 12 volts and provides 50 amps of power. The unit comes with an internal fan and includes a multi-groove serpentine pulley and wire/plug connector.

Warranty Information:

ARCO products are warranted against defects in materials and workmanship for 12 months for leisure use and 90 days for commercial or racing applications when properly installed. Extend your warranty by one year for rotating electric products (Tilt/Trim Motors, Alternators, Outboard Starters, and Inboard Starters) by registering within 30 days of purchase at 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.


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Specifications

  • High-performance and reliable replacement alternator
  • Precision-engineered for quality and durability
  • Meets or exceeds OEM specifications for performance
  • Includes multi-groove serpentine pulley for easy installation

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 Lui Paulino

So bright!

March 16, 2026

Works excellent. No more problems. You must buy this manufacturers product, not aftermarket.


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