12V Heavy Duty Starter Solenoid for Mercury Marine Mercruiser 89-96158 18-5817
89-02718
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12V Marine Solenoid 89-96158
Heavy-Duty Replacement for Mercury & Mercruiser
This heavy-duty 12-volt solenoid is engineered specifically for marine environments, providing a reliable electrical link between your ignition and starter or power trim system. Designed as a direct-fit replacement for Mercury Marine and Mercruiser applications, it features an isolated ground (insulated base) to ensure compatibility with specialized marine wiring circuits.
Key Features
- β Isolated Ground: Required for many Mercury/Mercruiser systems.
- β Dual Function: Used for both starters and power trim motors.
- β Precision Fit: Direct replacement for 4-terminal units.
- β Corrosion Resistant: Built for harsh saltwater & freshwater use.
Technical Specs
| Voltage | 12V DC |
| Terminals | 4 |
| Base Design | Isolated (Insulated) |
| Main Studs | 1/4-20 & 1/2-20 |
| Small Studs | 8-32 (Switch/GND) |
| Duty Cycle | Intermittent |
Compatibility / Fitment Guide
| Application | Models Covered | Notes |
|---|---|---|
| Mercury Outboard | 35HP to 275HP (Mariner) | Starter Solenoid Relay |
| Mercruiser | Stern Drive Inboard/Outboard | Starter & Power Trim Systems |
| Specific Outboards | 40HP, 50HP, 60HP, 70HP, 90HP, V135 | Check SN prefix (e.g., 6445653-Up) |
OEM Cross Reference
This part replaces the following manufacturer numbers:
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket replacement part from DB Electrical, manufactured to meet or exceed original equipment (OE) standards for marine performance.
How do I know if it is compatible?
We recommend checking your current part number against the OEM Cross Reference list. If your original unit is marked 89-96158 or 89-96158T, this is a guaranteed fit.
What does "Isolated Ground" mean for this part?
It means the solenoid's coil is not grounded through the metal mounting bracket. Instead, it uses a dedicated ground terminal (the 4th post), which is a common requirement for many Mercury Marine safety circuits.
Note: Please verify your original part number against the references above before purchasing. Domain: 4boats.co.uk
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