Starter Motor for Mercury Mariner 40 50 HP 2-Stroke Outboard Engine 50-73521
Starter Motor for Mercury Mariner 40 50 HP 2-Stroke Outboard Engine 50-73521
SKU:5399N
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Premium Starter Motor for Mercury Mariner
Reliable Starting Power for 40-50 HP 2-Stroke Outboard Engines
Ensure quick and dependable starts for your Mercury or Mariner 40-50 HP 2-stroke outboard engine with our high-quality aftermarket starter motor. Engineered to meet or exceed OEM specifications, this brand-new unit provides the robust performance required for marine environments, eliminating the frustrations of a failing original starter.
Designed for direct fitment, this starter motor (OEM Part No. 50-73521) is built with durable, corrosion-resistant components to withstand harsh saltwater and freshwater conditions. Upgrade your outboard's starting system with a reliable replacement that offers long-lasting efficiency and peace of mind on the water.
Key Features
- ✔ Marine-Grade Quality: Constructed with robust materials for superior durability and resistance to harsh marine environments.
- ✔ Direct OEM Replacement: Engineered to match the fit, form, and function of your original Mercury/Mariner starter motor.
- ✔ New Unit Guarantee: This is a brand-new starter, not a remanufactured part, ensuring maximum lifespan and reliability.
- ✔ Efficient & Powerful Starts: Delivers high torque for fast and efficient engine ignition every time.
Technical Specs
| Voltage: | 12V |
| Rotation: | Counterclockwise (CCW) |
| Teeth on Drive: | 10-Tooth Bendix Gear |
| Starter Type: | PMDD (Permanent Magnet Direct Drive) |
| Gear OD: | ~1.213" / 30.8mm |
| Field Housing Length: | ~4.11" / 104.5mm |
Vehicle Fitment Guide
| Make | Engine HP | Model Type | Year Range (Approx.) |
|---|---|---|---|
| Mercury Marine | 40 HP | 2-Stroke Outboard (e.g., 40EL, 40ELHPTO) | 1976-1997, various models up to 2010 |
| Mercury Marine | 45 HP | 2-Stroke Outboard | 1976-1997, various models |
| Mercury Marine | 50 HP | 2-Stroke Outboard (e.g., 50EL, 50EH, 50ELH, 50ELPT) | 1976-1997, various models up to 2010 |
| Mariner | 40-50 HP | 2-Stroke Outboard | 1976-1997, various models |
OEM Part Number Cross Reference
| Mercury Marine | 44369A1, 50-44369, 50-44369A1, 50-73521, 50-73521T, 50-72531, 50-73521-1, 50-73521T1, 50-898265005 |
| Sierra Marine | 18-5605, 18-5606 |
| ARCO | 5379 |
| Johnson Electric | 1097028M030SM, 4820221, 4820240, 4820240M030SM, 996240, SM10790, SM10970, SM48202 |
| Lester | 5399 (similar to 5399N) |
Frequently Asked Questions
What Mercury/Mariner engines is this starter motor compatible with?
This starter motor is compatible with various Mercury and Mariner 40 HP, 45 HP, and 50 HP 2-stroke outboard engines, generally from the mid-1970s up to late 1990s and early 2000s, depending on the specific model. Please refer to the OEM cross-reference and vehicle fitment guide, and always verify with your existing part number.
Is this a new or remanufactured starter?
This is a brand-new aftermarket starter motor, not a remanufactured unit. It is designed to deliver reliable performance and a long service life.
What are the key technical specifications of this starter?
Key specifications include 12-volt operation, counterclockwise (CCW) rotation, and a 10-tooth bendix gear. It is a Permanent Magnet Direct Drive (PMDD) starter type.
Note: Please verify your bike's model and year before purchasing.
Fast shipping available across the UK and Europe.
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