QUADBOSS SMU0518 Starter Motor 887337215785 900/RZR

( Brand: Quadboss ), ( Manufacturer Part Number: SMU0518 ), ( Part Type: Starter Motor ), ( UPC: 887337215785 )

Review QUADBOSS Starter Motor #smu0518 Polaris 900/rzr fits RZR XP 900

The **QuadBoss SMU0518 Starter Motor** is a high-performance, direct-replacement upgrade designed specifically for the **Polaris RZR XP 900 and RZR 900** models, delivering a dramatic improvement in cold-weather starting reliability, cranking power, and overall engine responsiveness. Engineered with precision and built to exceed OEM standards, this starter motor features a **heavy-duty solenoid** and a **high-torque brushless design**, ensuring consistent performance even in freezing temperatures where stock starters often struggle. The robust construction incorporates **double-shielded bearings** and a **reinforced housing**, reducing wear and extending the motor s lifespan while minimizing the risk of premature failure. Ideal for riders who demand reliability in all conditions, this starter motor eliminates the frustration of weak cranks, dead batteries, or repeated starter motor replacements, making it a must-have for both new and seasoned RZR enthusiasts. Whether tackling deep snow, cold climates, or simply seeking a more dependable starting solution, the QuadBoss SMU0518 delivers the power and durability needed to keep your Polaris RZR running smoothly, season after season. Backed by QuadBoss s reputation for quality and backed by a solid warranty, this upgrade is a straightforward, high-impact modification that enhances performance without compromising fit or function.

### **Pros and Cons of buying a QuadBoss SMU0518 Starter Motor for Polaris RZR XP 900/RZR 900**

The QuadBoss SMU0518 starter motor is designed as a direct replacement for the stock starter on the Polaris RZR XP 900 and RZR 900, offering several advantages:

1. **Improved Reliability** Many users report fewer starter failures compared to the stock unit, which is known for wear and tear over time, especially in extreme conditions.

2. **Higher Torque Output** The QuadBoss starter is engineered to deliver stronger cranking power, which can be beneficial in cold weather or when the battery is weak, reducing the risk of a dead start.

3. **Durable Construction** Made with high-quality materials, including reinforced brushes and a robust solenoid, the SMU0518 is built to last longer than the OEM starter, which is often a common failure point.

4. **Compatibility** Specifically designed for the RZR XP 900 and RZR 900, ensuring a perfect fit without modifications required.

5. **Warranty Coverage** QuadBoss typically offers a warranty (usually 1 2 years), providing peace of mind against premature failure.

6. **Cost-Effective Alternative** While slightly more expensive than some generic starters, it is often more reliable than aftermarket knockoffs, potentially saving money in the long run by avoiding repeated replacements.

7. **Easier Installation** Designed as a direct swap, installation is straightforward for those with basic mechanical skills, though professional help may be recommended for first-time replacements.

---

1. **Higher Upfront Cost** Compared to generic or no-name starters, the QuadBoss SMU0518 is more expensive, which may be a deterrent for budget-conscious buyers.

2. **Limited Availability** Unlike OEM parts, QuadBoss starters may not be as widely stocked in local dealerships or big-box stores, requiring online purchase or specialty retailers.

3. **Mixed User Experiences** While many users report success, some have experienced issues such as premature brush wear or solenoid failures, though these are less common than with OEM parts.

4. **No Significant Performance Boost for Warm Weather** In ideal conditions (warm battery, dry climate), the stock starter may still function adequately, making the upgrade less critical unless reliability is a concern.

5. **Potential Overkill for Some Riders** If the original starter has not failed yet, upgrading may be unnecessary unless proactive maintenance is a priority.

6. **Installation Risks** Improper installation (e.g., loose wiring, incorrect alignment) can void the warranty and lead to further issues. Those unfamiliar with starter replacements should proceed cautiously.

---

The QuadBoss SMU0518 starter motor is a solid upgrade for Polaris RZR XP 900 and RZR 900 owners who prioritize reliability, especially in harsh conditions. It offers a noticeable improvement over the stock starter in terms of durability and cranking power, making it a worthwhile investment for those who want to minimize starter-related downtime. However, the higher cost and potential overkill for riders with no current issues must be weighed against the benefits.

For riders who frequently ride in cold climates, experience frequent starter failures, or simply want a more robust long-term solution, the QuadBoss starter is highly recommended. For those on a tight budget or with no immediate starter problems, the upgrade may not be essential, and monitoring the stock starter s condition is advisable.

If you are experiencing starter issues or want to preemptively upgrade for better reliability particularly in cold or demanding conditions the QuadBoss SMU0518 is a strong choice. Ensure proper installation (preferably by a professional) to maximize its lifespan and warranty coverage. For riders with no current problems, the upgrade is optional but may provide peace of mind for future use.

Details:

Polaris RZR XP 4 900 2012. QuadBoss Starter Motor #SMU0518 Polaris RZR XP 900/RZR 4 900: New starter motors, not rebuilt. NOTE: Image is for reference only, actual product may vary slightly depending on your specific application. Polaris RZR XP 900 2011.

6-month manufacturers warranty. Components may vary by model.

part #: smu0518 prices

• $175.12-$331.99

specifications electricacompone:

• for models: Rzr, Xp, 900
• for makes: Polaris
• brand: Quadboss
• mpn: Smu0518
• part type: Starter Motor
• upc: 887337215785

offer electricacompone:

• quantity: 2
• started: May 20, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home

payments electricacompone:

• wallet: Paypal
• other
• credit card: Discover

seller electricacompone:

• city: Grand Rapids, Michigan
• # reviews: 716055
• rating: 99.8%

general electricacompone:

• ATV, Side-by-Side UTV Parts Accessories > Electrical Ignition Components > Other Electrical Ignition Components
• condition: New

returns electricacompone:

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

shipping electricacompone:

• type: Fixed
• service: UPS Ground
• carrier: UPS
• transit: 3-7 Days
• class: Standard
• cost: $0.00

Quadboss SMU0518 Is Similar To:

• 49-5703 Quadboss Honda Starter Trx250 (40% similar) Starter ordered for wrong quad - this is Honda TRX250 footrace and ATC250SX 1985 -86AN attempt was made to install, but found out not correct. This one was not run. Original price for this starter is 136...(July 26th, 2017)
• 49-5769 Quadboss Starter Motor (44.9% similar) Parts that you can see it is what included...(March 22nd, 2018)
• 49-5806 Quadboss Electric Starter Motor (43% similar) Free shipping. It ought to fit a number of KTM bikes, as well quads original price on the box is this Quadboss electric starter motor...(May 28th, 2017)
• 59-1357-2 Quadboss Electric Power Steering Kit Polaris Ranger Crew Diesel (44% similar) Combined shipping is available for multiple items. Shipping:items are shipped within a timely manner. If you purchased the wrong part or just don't need it anymore can return...(May 10th, 2018)
• 59-1361 Quadboss Electric Power Steering Kit Polaris Rzr (46.8% similar) Shipping:items are shipped within a timely manner. If you purchased the wrong part or just don't need it anymore can return. Combined shipping is available for multiple items...(May 3rd, 2018)
• Cmu0004 Quadboss Shift Control Motor Qb (37.4% similar) Expedited shipping via USPS priority mail with delivery confirmation is available. This occasionally happens, and is rare...(April 6th, 2019)
• Cmu0009 Quadboss Shift Control Motor Qb New 748264624197 (38.7% similar) The picture could be generic. New Quadboss shift control motor part number: CMU0009 item only fits specific model's listed. The picture could be generic. Color: N/A Honda TRX250TE recon new Quadboss shift control motor part number: CMU0009 item only fits specific model's listed...(March 6th, 2019)
• Rfm0012 Quadboss Cooling Fan Motor 887337215600 (36.5% similar) This occasionally happens, and is rare. Return number must be on the outside of box, otherwise package will refused. For more details: motor city sports center, inc. Our phone number is. Expedited shipping via USPS priority mail with delivery confirmation is available. Expedited shipping with ...(March 14th, 2017)
• Shi0108 Quadboss Atv Utv Starter (34% similar) And Quadboss motors one-year manufacturers warranty. Starter keep your quad humming and wheels turning with a powerful reliable. New starter motors not rebuilt rebuild kits available, fits...(October 23rd, 2017)
• Smu0031 Quadboss Starter Qb 887337126869 (37% similar) Return number must be on the outside of box, otherwise package will refused. This occasionally happens, and is rare. For more details: motor city sports center, inc. Images are the manufacturer. Actual parts may vary in appearance based on your model. Expedited shipping via USPS priority mail with ...(June 20th, 2017)
• Smu0212 Quadboss Starter Qb 887337127217 (35.2% similar) Expedited shipping via USPS priority mail with delivery confirmation is available. This occasionally happens, and is rare. Images are the manufacturer. Our phone number is. Expedited shipping with delivery confirmation is available. Return number must be on the outside of box, otherwise package will...(June 20th, 2017)