OE QUALITY 50-8M0142679 Volt Starter Motor 175HP 200HP 225HP 250HP 300HP V6 V8 18-55505

( Brand: Oe Quality ), ( Manufacturer Part Number: 50-8M0142679 ), ( Reference Oe/oem Number: 50-8m0142679, 8m0187292, 8m0104011, 8m0099252, 8m0061073, 8m0096343, 8m0137789, M0074530, 18-55505, Starter Motor ), ( Fit Engine: 175hp 200hp 225hp 250hp 300hp V6 V8 ), ( Type: Starter Motor ), ( Manufacturer Warranty: 2 Years )

Review OE QUALITY Volt Starter Motor Mercury 175hp 200hp 225hp 250hp 300hp V6 V8 fits 2012

The **50-8M0142679 12-Volt Starter Motor** is a high-performance, direct-replacement starter designed specifically for Mercury marine engines in the **V6 and V8 series**, covering a broad range of horsepower ratings from **175HP to 300HP**, including models like the **18-55505** and its variants. Engineered to meet the demanding requirements of modern marine propulsion systems, this starter motor delivers robust, reliable cranking power with precision-engineered components that ensure smooth, consistent starts even under the most challenging conditions. Built with a **12-volt electrical system compatibility**, it integrates seamlessly with Mercury s advanced fuel injection and ignition systems, providing the necessary torque and rotational force to overcome the increased compression and displacement found in high-performance V6 and V8 engines. The starter features a **heavy-duty solenoid**, which ensures quick engagement and disengagement of the pinion gear, reducing wear on both the starter and the engine s flywheel ring gear while maximizing efficiency. Constructed from **high-grade steel and reinforced alloys**, the motor s internal components including the brushes, armature, and field windings are designed to withstand prolonged use, extreme temperatures, and the corrosive marine environment, ensuring longevity and dependability. Its **direct-drive design** eliminates the need for additional reduction gears, allowing for a more compact and efficient installation while maintaining optimal power delivery. Whether used in **recreational boats, performance yachts, or commercial vessels**, this starter motor guarantees consistent performance, reducing the risk of failed starts and minimizing downtime. Backed by Mercury s reputation for quality and backed by a robust warranty, this starter motor is an essential upgrade for any marine enthusiast seeking peak reliability and performance from their high-horsepower V6 or V8 engine.

### **Pros and Cons of Buying a 50-8M0142679 12V Starter Motor for Mercury V6/V8 Engines (175HP 300HP, 18-55505 Series)**

1. **Compatibility** The **50-8M0142679** starter motor is designed specifically for Mercury marine engines in the **18-55505 series**, covering **V6 (175HP 250HP) and V8 (250HP 300HP)** models. This ensures proper fitment with the engine s electrical and mechanical requirements.

2. **High Torque Performance** Marine starter motors in this range are built to handle **cold starts, high cranking demands, and deep-cycle battery conditions**, which is crucial for outboard engines that may experience frequent starts in varying conditions.

3. **Durability** Mercury marine starters are engineered for **marine environments**, meaning they are often **rust-resistant, sealed against water intrusion, and built to withstand vibration** unlike some automotive starters that may fail prematurely in wet conditions.

4. **OEM Quality** As an **original equipment or high-quality aftermarket replacement**, this starter should meet Mercury s performance standards, reducing the risk of early failure compared to generic or low-quality alternatives.

5. **Ease of Installation** Since it is a **direct replacement**, swapping it out typically requires minimal modifications. Most users can install it themselves with basic tools, though some may need to adjust wiring or mounting brackets.

6. **Warranty Coverage** Reputable brands (such as Mercury, Universal, or MarineStar) often provide **extended warranties (1 2 years)**, offering peace of mind against premature failure.

7. **Compatibility with Aftermarket Upgrades** If you ve modified your engine (e.g., **turbocharging, forced induction, or high-performance alternators**), a **high-torque starter** like this one can help ensure reliable starts under increased electrical load.

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1. **Cost** A **high-quality marine starter motor** in this range typically costs **$200 $500**, depending on brand and retailer. This is **significantly more expensive** than a generic automotive starter, which can sometimes be found for **$50 $150**.

2. **Potential Overkill for Some Applications** If your engine is **lightly used or in good condition**, a **lower-cost automotive starter** (with proper marine modifications, such as **waterproofing**) *might* work in a pinch though this is **not recommended** for long-term reliability.

3. **Limited Availability** Unlike mass-produced automotive parts, **marine starters can be harder to find** in local stores, requiring **online purchases** (e.g., from **Mercury dealers, MarineStar, or eBay**).

4. **Installation Challenges** Some users report that **mounting brackets or wiring connections** may require **additional adjustments**, especially if the boat s electrical system is outdated or poorly maintained.

5. **Potential for Counterfeit Parts** If purchasing from **unverified sellers**, there is a risk of receiving a **fake or low-quality starter** that fails quickly. Always buy from **authorized dealers or trusted brands**.

6. **Battery Compatibility Issues** If your **marine battery is weak or incompatible** (e.g., **low CCA rating**), even the best starter may struggle to crank the engine reliably. A **new battery or battery upgrade** may be necessary for optimal performance.

7. **Weight & Space Considerations** Marine starters are **bulkier than automotive ones**, which may require **modifications to the engine bay** if space is limited.

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### **Conclusion & Recommendation**

#### **Should You Buy the 50-8M0142679 Starter for Your Mercury 18-55505 Engine?**

- You **prioritize reliability** and want a **direct OEM or high-quality replacement** that matches Mercury s engineering standards.

- Your engine **requires frequent starts** (e.g., in cold water, with forced induction, or under heavy load).

- You **have a good marine battery** (or are willing to upgrade) to support the starter s torque demands.

- You **value long-term durability** over short-term cost savings.

- You re on a **tight budget** and can find a **properly modified automotive starter** (with waterproofing) at a fraction of the cost.

- Your engine is **rarely used** and starts easily under normal conditions.

- You **cannot confirm the starter s authenticity** (risk of counterfeit parts).

1. **Check Battery Health** A **weak battery will drain the starter quickly**. Test **cold cranking amps (CCA)** and replace if below **500 600 CCA** for marine use.

2. **Use Marine-Grade Connectors** Ensure **corrosion-resistant terminals** and **waterproof connections** to prevent electrical failures.

3. **Lubricate & Inspect** Apply **marine grease** to brushes and bearings during installation to reduce wear.

4. **Consider a Battery Charger** If your boat sits unused for long periods, a **maintenance charger** prevents sulfation and extends starter life.

5. **Buy from a Reputable Source** Purchase from **authorized Mercury dealers, MarineStar, or well-reviewed online retailers** to avoid counterfeits.

**For most Mercury 18-55505 V6/V8 owners (especially those running 250HP or modified engines), the 50-8M0142679 starter is the best choice.** While it costs more upfront, its **superior torque, marine durability, and reliability** make it a **worthwhile investment** compared to cheaper alternatives that may fail under demanding conditions.

If you re **on a tight budget and the engine starts easily**, a **properly modified automotive starter** (with waterproofing) *could* be a temporary solution but **not recommended for long-term use**. Always **prioritize marine-grade components** for outboard engines.

Details:

Starter Motor. With these parts you can replace your defective simply plug and play. 1 x Outboard Engine Starter Motor. 24 months without mileage limitation.

Please compare carefully with Photos or OE number before purchasing the part.

part #: 508m0142679 price

• $152.99

specifications ouboaen:

• for makes: Mercury
• for years: 2012
• brand: Oe Quality
• mpn: 50-8m0142679
• reference oe/oem number: 50-8m0142679, 8m0187292, 8m0104011, 8m0099252, 8m0061073, 8m0096343, 8m0137789, M0074530, 18-55505, Starter Motor
• fit engine: 175hp 200hp 225hp 250hp 300hp V6 V8
• type: Starter Motor
• manufacturer warranty: 2 Years

general ouboaen:

• Boat Parts > Outboard Engines Components > Complete Outboard Engines
• condition: New

seller ouboaen:

• rating: 99.0%
• city: Chino, California
• # reviews: 3667

shipping ouboaen:

• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery
• cost: $0.00
• type: Fixed
• class: Standard
• transit: 5-8 Days

offer ouboaen:

• sold: 0
• best offers: True
• options: Ship-to-home
• availability: In Stock
• started: March 28, 2026
• quantity: 9

returns ouboaen:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

payments ouboaen:

• other
• credit card: Visa
• wallet: Apple-pay

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