Aftermarket 12V Marine Starter Solenoid SMR6013 18-5801 89-76416A1

Aftermarket 12 V, four-terminal starter solenoid for selected Mercury, Mariner, MerCruiser and OMC marine starting systems. It uses a grounded mounting base and replaces the listed OEM and aftermarket references; compare the terminals and circuit before ordering.

Key Features

• Aftermarket marine starter-solenoid switch
• Four-terminal grounded-base design
• Phenolic housing with heavy-duty main studs
• Intermittent-duty starting application
• Direct replacement where the listed numbers and configuration match

Technical Specs

• Voltage: 12 V
• Terminals: 4
• Circuit: grounded base
• Duty: intermittent
• Main studs: 5/16-18
• Control studs: 10-32
• Mounting hardware: not stated as included

Compatibility / Fitment Guide

Used on selected Mercury/Mariner outboards, MerCruiser and OMC sterndrive or inboard systems, and some Johnson/Evinrude applications. Fitment is determined by the original solenoid number, grounded-base circuit, terminal sizes and mounting pattern—not by engine brand alone. Isolate the battery and compare the existing unit before installation.

Part Number Cross Reference

• Arrowhead / WAI: SMR6013
• Mercury: 89-76416A1
• OMC: 985064
• Sierra: 18-5801
• ARCO: SW394
• Prestolite: SAZ4201DCY
• J&N: 240-01097

Frequently Asked Questions

Is this a genuine Mercury or OMC solenoid?
No. It is an aftermarket replacement.

Is it continuous duty?
No. It is specified for intermittent starter duty.

How do I confirm fitment?
Match the original part number, 12 V rating, grounded-base circuit, four terminals and mounting layout.

Should I disconnect the battery first?
Yes. Isolate the battery before working on starter wiring.