Mercruiser OMC Volvo 3.0 4.3 5.0 Marine Starter Motor PMGR Offset Bolt GM
Mercruiser OMC Volvo 3.0 4.3 5.0 Marine Starter Motor PMGR Offset Bolt GM
SKU:6423N
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M1786 Marine Starter Motor
Reliable Starting Power for Mercruiser, OMC & Volvo Penta GM Engines
Ensure flawless engine starts with the M1786 high-performance Marine Starter Motor, specifically engineered for a wide range of popular marine applications. This robust starter is a perfect replacement for various Mercruiser, OMC, and Volvo Penta models utilising GM-based 3.0L, 4.3L, 5.0L, 5.7L, and 6.2L engines. Designed for the challenging marine environment, it delivers consistent, powerful cranking power when you need it most.
Featuring a modern Permanent Magnet Gear Reduction (PMGR) design, the M1786 offers superior efficiency, increased torque, and a lighter, more compact form factor compared to older direct-drive units. Its precision engineering guarantees reliability and durability, making it an essential upgrade or replacement for your marine engine.
Key Features
- ✔ PMGR Design: Permanent Magnet Gear Reduction for higher torque & efficiency.
- ✔ OE Quality: Engineered to meet or exceed original equipment specifications.
- ✔ Marine Durability: Built to isolate internal components from harsh elements and resist corrosion.
- ✔ Enhanced Performance: Offers improved cold start capabilities and reduced current draw.
- ✔ Compact & Lightweight: Smaller footprint allows for easier installation.
Technical Specs
| Unit Type: | Starter |
| Voltage: | 12V |
| KW: | 1.4KW |
| Rotation: | CW (Clockwise) |
| Teeth: | 11 |
| Starter Type: | PMGR (Permanent Magnet Gear Reduction) |
| Mounting Holes: | 2, Offset Bolt Pattern |
Vehicle Fitment Guide
| Make | Model (Engine Size) | Year Range |
|---|---|---|
| Mercruiser | 3.0L / 181CI 4-Cyl (GM-based) | 1996 - 1999, 1999 & Newer |
| Mercruiser | 4.3L / 262CI V6 (GM-based) | 1996 - 2002, 1999 & Newer |
| Mercruiser | 5.0L / 305CI V8 (GM-based) | 1996 & Newer |
| Mercruiser | 5.7L / 350CI V8 (GM-based) | 1998 & Newer |
| Mercruiser | 6.2L / 377CI V8 (GM-based) | 1999 & Newer |
| OMC Marine | Various GM applications | 1999 - Onwards |
| Volvo Penta | 3.0L, 4.3L, 5.0L, 5.7L (GM-based) | Various years (verify with OEM P/N) |
OEM Part Number Cross Reference
| Mercruiser | 50-863007A1, 50-807904A1, 50-863007A1 |
| OMC / Volvo Penta | 3860566, 3857747, 3885317 |
| Sierra Marine | 18-6275, 18-6946 |
| Delco | 9000839, 9000840, 8000282, PG260G |
| Other Equivalents | 4093283, HY4093283, SDR0253, 6791, 6792 |
Frequently Asked Questions
What makes this a 'Permanent Magnet Gear Reduction' (PMGR) starter?
PMGR starters use permanent magnets instead of traditional field coils and incorporate a gear reduction system. This design allows for a smaller, lighter unit that delivers higher torque and greater efficiency, especially during cold starts, by amplifying the motor's power output to the flywheel.
How do I know if this starter motor (M1786) is compatible with my boat's engine?
This starter is designed for Mercruiser, OMC, and Volvo Penta marine engines based on GM blocks (3.0L, 4.3L, 5.0L, 5.7L, 6.2L) with an offset bolt pattern. The best way to confirm compatibility is to cross-reference your existing starter's OEM part number with the list provided, or verify the specifications (12V, 11 teeth, CW rotation, offset holes) and visually compare with your current unit.
What are the benefits of upgrading to a PMGR starter for my marine application?
Upgrading to a PMGR starter offers several advantages including more reliable engine cranking, especially in cold conditions, reduced battery drain due to higher efficiency, a lighter and more compact design, and enhanced durability against marine corrosion thanks to sealed components.
Note: Please verify your bike's model and year before purchasing.
Fast shipping available across the UK and Europe.
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