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Mercruiser Starter Motor 50-863007A1 3.0 4.3 5.0 5.7 6.2 7.4 8.1 8.2 12V PMGR
Mercruiser Starter Motor 50-863007A1 3.0 4.3 5.0 5.7 6.2 7.4 8.1 8.2 12V PMGR
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Mercruiser Starter Motor 50-863007A1
High-Torque PMGR 12V Marine Starter
This premium quality replacement starter motor is designed for high-performance cranking in marine environments. Specifically engineered for MerCruiser 4, 6, and 8-cylinder engines, this PMGR (Permanent Magnet Gear Reduction) unit provides superior torque and reliable starting even under heavy load. It features marine-grade seals and corrosion-resistant materials to withstand harsh saltwater and freshwater conditions.
Key Features
- ✔ Permanent Magnet Gear Reduction (PMGR)
- ✔ 11-Tooth Pinion for efficient engagement
- ✔ Offset (Staggered) 2-bolt mounting pattern
- ✔ SAE J1171 Marine Certified ignition protection
- ✔ Direct fit for 14-inch flywheels
Technical Specs
| Voltage | 12V |
| Power | 1.7 kW |
| Rotation | CW (Clockwise) |
| Teeth count | 11 Teeth |
| Mounting Type | Bottom Mount (Offset) |
Compatibility / Fitment Guide
| Engine Application | Year Range | Notes |
|---|---|---|
| MerCruiser 3.0L / 181ci | 1999 & Newer | Fits 4-Cylinder models |
| MerCruiser 4.3L V6 | Mid-80s to Current | Includes Carb & MPI models |
| Small Block V8 (5.0L, 5.7L, 6.2L) | Late Model | Fits 305, 350, 377 MAG MPI |
| Big Block V8 (7.4L, 8.1L, 8.2L) | Various Years | Fits 454, 496, 502 Mag |
OEM Cross Reference
| Mercury / MerCruiser | 50-863007A1, 50-806964A2, 50-806964A3, 50-806964A4, 50-807904A1, 50-812428A3, 50-812604A2, 50-822330A2 |
| Sierra Marine | 18-6275, 18-5913, 18-5905, 18-5900 |
| Arco Marine | 30470, 30450, 30433 |
| Volvo Penta / OMC | 3860566, 3855177, 3850525, 3860764, 3857747 |
| Delco | 9000839, 9000840, 9000884, 9000885 |
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and performance.
How do I know if it is compatible?
We recommend checking the SKU/MPN and Cross Reference list provided above. This unit fits late-model GM engines with an offset (staggered) bolt pattern and a 14-inch flywheel.
What is a PMGR starter?
PMGR stands for Permanent Magnet Gear Reduction. These starters are lighter and provide more cranking torque than older direct-drive units, making them more efficient for starting large displacement marine engines.
Note: Please verify your original part number or mounting bolt pattern against the references above before purchasing. Domain: 4boats.co.uk.
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