---
product_id: 618188074
title: "SouthMarine Boat Engine 89-96054T 89-96054 8M0185149 Starter Relay/Solenoid Switch for Mercury Mercruiser Marine Outboard Motor 8HP-115HP, fit Sierra 18-5816"
brand: "southmarine"
price: "¥5955"
currency: JPY
in_stock: true
reviews_count: 2
category: "South Marine"
url: https://www.desertcart.jp/products/618188074-southmarine-boat-engine-89-96054t-89-96054-8m0185149-starter-relay
store_origin: JP
region: Japan
---

# 12V power compatibility Direct fit for multiple OEM part numbers Fits 8HP-115HP Mercury engines SouthMarine Boat Engine 89-96054T 89-96054 8M0185149 Starter Relay/Solenoid Switch for Mercury Mercruiser Marine Outboard Motor 8HP-115HP, fit Sierra 18-5816

**Brand:** southmarine
**Price:** ¥5955
**Availability:** ✅ In Stock

## Summary

> ⚡ Start Strong, Sail Longer – Power Your Adventure with Confidence!

## Quick Answers

- **What is this?** SouthMarine Boat Engine 89-96054T 89-96054 8M0185149 Starter Relay/Solenoid Switch for Mercury Mercruiser Marine Outboard Motor 8HP-115HP, fit Sierra 18-5816 by southmarine
- **How much does it cost?** ¥5955 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/618188074-southmarine-boat-engine-89-96054t-89-96054-8m0185149-starter-relay)

## Best For

- southmarine enthusiasts

## Why This Product

- Trusted southmarine brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Build:** Crafted with high-quality materials to withstand marine environments and extend engine life.
- • **Reliable 12V Power:** Optimized for 12V electrical systems to deliver consistent and efficient starting performance every time.
- • **OEM-Grade Precision:** Matches original part numbers 89-96054T, 8M0185149, and Sierra 18-5816 for guaranteed fit and function.
- • **Seamless Compatibility:** Engineered to fit a wide range of Mercury Mercruiser engines from 8HP to 115HP, ensuring hassle-free installation.
- • **Plug-and-Play Installation:** Designed for quick replacement with minimal tools, reducing downtime and getting you back on the water faster.

## Overview

The SouthMarine 89-96054T Starter Relay/Solenoid Switch is a precision-engineered replacement part compatible with Mercury Mercruiser marine outboard motors ranging from 8HP to 115HP. Operating on a 12V system, it fits multiple OEM part numbers ensuring direct compatibility and reliable electric start performance. Lightweight and compact, this solenoid switch is built to endure harsh marine conditions, making it an essential upgrade for seamless engine starts and extended boating adventures.

## Description

Description:Fit Part Number: 89-96054T 89-96054 8M0185149 18-5816Fit Engine: 8HP-115HP, 12VIf you are unsure, please provide your engine serial number.Application:This 96054T SOLENOID fits Mercury the following models and components:Crate Engines 5.7L 350 CID EFI Gen.+ RePower Plus ALL & Up ELECTRICAL BOX AND COMPONENTS25HP 7020507 1987 Electric Components20HP 7020224 1984 Electric Components20HP 7020227 1987 Electric Components20HP 7020206 1986 Electric Components25HP Mercury 18 7207858 THRU 7209532 Electric Components25HP Mercury 25 9378116 THRU 9415100 Electric Components25HP 7025527 1987 Electric Components25HP 7025205 1985 Electric Components20HP 7020205 1985 Electric Components18HP 6416713 THRU 6443972 Electric Components18HP 7207858 THRU 7209532 Electric Components20HP 7020225 1985 Electric Components8HP 7008237 1987 Electric Components25HP 7025206 1986 Electric Components25HP Mercury 25 7207858 THRU 7209532 Electric Components25HP Mercury 25 6416713 THRU 6443972 Electric Components25HP 7025577 1987 Electric Components25HP Mercury 18 9378116 THRU 9415100 Electric Components9.9HP 7010211YD 1991 Electric Components20HP 7020204 1984 Electric Components25HP 7025207 1987 Electric Components15HP 7015201YD 1991 Electric Components25HP 7025225 1985 Electric Components8HP 7008201YD 1991 Electric Components18HP 9378116 THRU 9415100 Electric Components25HP 7025226 1986 Electric Components6HP 7006211YD 1991 Electric Components9.9HP 7010507 1987 Electric Components9.9HP 7010527 1987 Electric Components25HP Mercury 18 6416713 THRU 6443972 Electric Components20HP 7020226 1986 Electric Components9.9HP 7010312YD 1991 Electric Components20HP 7020525 1985 Electric Components25HP 7025525 1985 Electric Components25HP 7025557 1987 Electric Components20HP 7020504 1984 Electric Components9.9HP 7010201YD 1991 Electric Components25HP 25 9332837X THRU 9390058X Electric Components15HP 7015211YD 1991 Electric Components20HP 7020207 1977 Electric Components18HP 9332837X THRU 9390058X Electric Components25HP 18 9332837X THRU 9390058X Electric Components25HP 7025227 1987 Electric Components8HP 7008211YD 1991 Electric Components20HP 7020527 1987 Electric Components6HP 7006201YD 1991 Electric Components9.9HP 7010227 1987 Electric Components9.9HP 7010207 1987 Electric Components20HP 7020524 1984 Electric Components25HP 7025505 1985 Electric Components25HP 7025312YD 1991 Electric Start Components25HP 7025311YD 1991 Electric Start Components20HP 7020211YD 1991 Electric Start Components25HP 7025201YD 1991 Electric Start Components20HP 7020201YD 1991 Electric Start Components25HP 7025211YD 1991 Electric Start Components40HP 7040412YD 1991 Electrical Box Components40HP 7040312YD 1991 Electrical Box Components40HP 7040411YD 1991 Electrical Box Components40HP 7040213YD 1991 Electrical Box Components50HP 7050412YD 1991 Electrical Components (50/60)60HP 7060412YD 1991 Electrical Components (50/60)75HP 7075625 1985 STARTER MOTOR AND WIRING HARNESS75HP 7075716 1986 STARTER MOTOR AND WIRING HARNESS75HP 7075525 1985 STARTER MOTOR AND WIRING HARNESS80HP 8066915 & Up STARTER MOTOR AND WIRING HARNESS80HP 5763341 THRU 6432900 STARTER MOTOR AND WIRING HARNESS80HP 7080520 1980 STARTER MOTOR AND WIRING HARNESS75HP 7075524 1984 STARTER MOTOR AND WIRING HARNESS80HP 7080629 1979 STARTER MOTOR AND WIRING HARNESS75HP 7075624 1984 STARTER MOTOR AND WIRING HARNESS80HP 7080620 1980 STARTER MOTOR AND WIRING HARNESS75HP 7075726 1986 STARTER MOTOR AND WIRING HARNESS80HP 7162528 THRU 7208572 STARTER MOTOR AND WIRING HARNESS60HP 7060726 1986 Starter Motor, Starter Solenoid, Rectifier70HP 7177688 THRU 7208332 Starter Motor, Starter Solenoid, Rectifier50HP 7050726 1986 Starter Motor, Starter Solenoid, Rectifier70HP 7070622 1982 Starter Motor, Starter Solenoid, Rectifier70HP 7070623 1983 Starter Motor, Starter Solenoid, Rectifier60HP 7060524 1984 Starter Motor, Starter Solenoid, Rectifier70HP 7070520 1980 Starter Motor, Starter Solenoid, Rectifier60HP 7060624 1984 Starter Motor, Starter Solenoid, Rectifier70HP 7070620 1980 Starter Motor, Starter Solenoid, Rectifier60HP 7060525 1985 Starter Motor, Starter Solenoid, Rectifier60HP 7060625 1985 Starter Motor, Starter Solenoid, Rectifier70HP 5702220 THRU 6428680 Starter Motor, Starter Solenoid, Rectifier60HP 7060716 1986 Starter Motor, Starter Solenoid, Rectifier50HP 7050716 1986 Starter Motor, Starter Solenoid, Rectifier70HP 7070523 1983 Starter Motor, Starter Solenoid, Rectifier115HP 7115746 1986 SWITCH BOX AND STARTER SOLENOID115HP 7115747 1987 SWITCH BOX AND STARTER SOLENOID90HP 7190903 THRU 7208847 SWITCH BOX AND STARTER SOLENOID90HP 7090620 1980 SWITCH BOX AND STARTER SOLENOID90HP 7090726 1986 SWITCH BOX AND STARTER SOLENOID115HP 7115644 1984 SWITCH BOX AND STARTER SOLENOID115HP 5738891 THRU 6436122 SWITCH BOX AND STARTER SOLENOID115HP 7191308 THRU 7208847 SWITCH BOX AND STARTER SOLENOID115HP 7115645 1985 SWITCH BOX AND STARTER SOLENOID115HP 7115620 1980 SWITCH BOX AND STARTER SOLENOID......

Review: Electri start works well now. be sure to disconnect battery before replacing - nuts are very close to metal that is grounded.
Review: Got the electric start working again on my 25 hp Mariner. Works like a charm.

## Features

- Fit Part Number: 89-96054T 89-96054 8M0185149 18-5816
- Fit Engine: 8HP-115HP, 12V
- If you are unsure, please provide your engine serial number.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CBM9JWH3 |
| Item model number | 89-96054T 89-96054 8M0185149 |
| Manufacturer | SouthMarine |
| Package Dimensions | 11.3 x 7.9 x 6.3 cm; 155 g |

## Product Details

- **Brand:** SouthMarine
- **Connector type:** Solder
- **Contact material:** Silver Copper
- **Contact type:** Normally Open
- **Mounting type:** Other Mount

## Images

![SouthMarine Boat Engine 89-96054T 89-96054 8M0185149 Starter Relay/Solenoid Switch for Mercury Mercruiser Marine Outboard Motor 8HP-115HP, fit Sierra 18-5816 - Image 1](https://m.media-amazon.com/images/I/71VwOpBqNxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***B on 23 October 2024*

Electri start works well now. be sure to disconnect battery before replacing - nuts are very close to metal that is grounded.

### ⭐⭐⭐⭐⭐ Review
*by R***E on 10 March 2024*

Got the electric start working again on my 25 hp Mariner. Works like a charm.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-09*