ARCO Marine Premium Replacement Alternator w/Single-Groove Pulley - 12V, 70A [20810]

ARCO Marine Premium Replacement Alternator w/Single-Groove Pulley - 12V, 70A [20810]

Replacement alternator that will fit Mercruiser 3.0L, 1999-Up, 12 Volt, 70 AMP, Internal Fan, 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 [20810] 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

• Mounting Style – Direct OEM-style replacement

• Polarity – Negative Ground

• Housing Material – Marine-grade corrosion-resistant aluminum

• Finish – Black protective coating

• Weight – Approx. 11.5 lbs / 5.2 kg

• Rotation – Bi-directional

• Warranty – Limited manufacturer warranty

Mounting Application:

• Designed as a direct replacement for select marine engines requiring a 12V, 70A alternator with a single-groove pulley. Ideal for inboard and sterndrive applications where reliability and corrosion resistance are critical.

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 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 19020600
• DELCO Alternator 19020604
• MERCURY Alternator 862030T
• MERCURY Alternator 862030T01
• SIERRA Alternator 18-5983
• PROTORQUE Alternator PH300-0033
• PROTORQUE Alternator PH300-0034
• MPPARTS Alternator ADR0317
• MPPARTS Alternator ADR0299
• QUICKSILVER Alternator 862030T01
• QUICKSILVER Alternator 862031T

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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