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  3. MERCURY 899959A01

MERCURY 899959A01 Verado Reflash Kit

fits make: Mercury.

899959a01 Mercury Verado Reflash Kit P#899959a01

( Manufacturer Part Number: 899959A01 )

Review MERCURY Verado Reflash Kit P#899959a01

The **Mercury 899959A01 Verado Reflash Kit** is a meticulously engineered solution designed to restore and enhance the performance of Mercury s iconic Verado outboard engines, ensuring they operate with the precision and efficiency of a brand-new unit. This high-quality reflash kit is specifically tailored for the **2016 2023 Verado 200, 250, and 300 HP models**, allowing boat owners to update their engine s control module firmware to the latest software iteration, which optimizes throttle response, fuel efficiency, and overall drivability. Engineered with cutting-edge technology, the reflash kit includes a **dedicated reflash cable**, **compatible software tools**, and **detailed installation instructions**, all of which work seamlessly with Mercury s proprietary reflashing software to ensure a smooth and hassle-free upgrade process. Whether you re a seasoned boater looking to maximize performance or a technician seeking a reliable solution for professional service, this kit delivers unmatched convenience and performance benefits. By leveraging the latest firmware updates, users can experience improved power delivery, reduced emissions, and enhanced reliability, making their Verado engine feel as fresh as the day it left the factory. The reflash kit is a cost-effective alternative to a full engine replacement, extending the lifespan of your investment while keeping it at the forefront of Mercury s technological advancements. With its straightforward installation and proven results, this kit is an essential tool for anyone committed to maintaining the peak performance of their Verado outboard.

### **Pros and Cons of buying a Mercury 899959A01 Verado Reflash Kit**

#### **Pros:**

1. **Performance Enhancement** The reflash kit is designed to optimize the engine s performance by updating the ECU (Engine Control Unit) software. This can improve throttle response, fuel efficiency, and overall power output, especially in the Verado s 4.6L V8 engine.

2. **Compatibility with Stock and Modified Engines** The kit is engineered to work with both stock and aftermarket-modified Verado engines, including those with performance upgrades like cold air intakes, exhaust systems, or fuel system enhancements.

3. **Legal Compliance** Unlike some aftermarket tuning solutions, a reflash from an authorized dealer or Mercury-approved tuner ensures the vehicle remains compliant with emissions regulations, avoiding potential issues with inspections or warranties.

4. **Improved Driving Experience** Many users report smoother power delivery, better shift points (if paired with a transmission tuner), and a more refined idle, making the boat more responsive and enjoyable to operate.

5. **Potential Fuel Efficiency Gains** In some cases, the reflash can optimize fuel delivery, leading to better mileage, especially if the engine was previously running slightly rich due to stock tuning.

6. **Warranty Considerations** If installed by an authorized dealer or technician, the reflash may not void the factory warranty, depending on the specific terms of the manufacturer s coverage.

7. **Future-Proofing** Newer reflash kits often include updates that address software bugs, improve reliability, and introduce minor performance tweaks, ensuring the engine runs more efficiently over time.

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#### **Cons:**

1. **Cost** The reflash kit itself is relatively affordable (typically under $200), but the installation often requires a professional visit to a Mercury dealer or certified tuner, adding labor costs (usually $100 $300 depending on location and service provider).

2. **Limited Power Gains** Unlike a full engine rebuild or forced induction upgrade, the reflash provides modest performance improvements (often 5 15% more power) rather than dramatic increases. For serious power seekers, additional modifications (e.g., turbocharging, supercharging) may be needed.

3. **Potential for Over-Tuning** If not installed correctly or if the engine has pre-existing issues (e.g., worn components, fuel system problems), a reflash could exacerbate problems like detonation, excessive wear, or fuel system stress.

4. **Transmission Compatibility Issues** While the reflash improves engine performance, it may not always sync perfectly with the transmission s shift points. Some users report slightly harsher shifts unless a transmission tuner is also applied.

5. **Risk of Voiding Warranty (If DIY or Unauthorized)** Attempting to reflash the engine yourself or using an unapproved tuner could void the factory warranty, leaving you responsible for any future engine-related repairs.

6. **Not a Permanent Solution for Aging Engines** If the Verado s engine is already worn or has mechanical issues, a reflash will not fix those problems. It s a software upgrade, not a hardware overhaul.

7. **Dependence on Professional Installation** Unlike plug-and-play performance parts, reflashing requires specialized equipment and knowledge. DIY attempts can lead to bricking the ECU or other software errors, potentially requiring a full reset or replacement.

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### **Conclusion**

The Mercury 899959A01 Verado Reflash Kit is a worthwhile investment for owners looking to unlock subtle but noticeable performance improvements in their Verado s 4.6L V8 engine. It offers a cost-effective way to enhance throttle response, fuel efficiency, and drivability without major mechanical modifications. However, it is not a cure-all for aging engines or a replacement for more aggressive power upgrades.

The key to a successful reflash lies in professional installation by an authorized dealer or a reputable tuner. While the gains are modest, they can significantly improve the boat s handling and responsiveness, making it a smart choice for those who want to squeeze out extra performance from their stock or lightly modified Verado.

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### **Recommendation**

If you own a **2016 2020 Mercury Verado (4.6L V8)** and are considering a reflash, proceed with the following steps:

1. **Verify Compatibility** Ensure your specific model year and engine configuration support the reflash kit. Check with a Mercury dealer or the manufacturer for confirmation.

2. **Choose a Reputable Installer** Have the reflash performed by an **authorized Mercury dealer or a certified tuner** to avoid warranty issues and ensure proper calibration.

3. **Consider Additional Modifications** If you plan to push performance further, pair the reflash with complementary upgrades like a **cold air intake, performance exhaust, or fuel system enhancements** for optimal results.

4. **Monitor Engine Health** After installation, pay close attention to engine behavior. If you notice rough idling, hesitation, or unusual noises, have it checked promptly to prevent long-term damage.

5. **Budget for Labor** While the kit itself is affordable, factor in installation costs (typically $100 $300) when deciding whether to proceed.

**Final Verdict:** The Verado reflash kit is a **low-risk, high-reward upgrade** for those who want a noticeable but subtle performance boost without major modifications. If installed correctly, it can enhance your Verado s driving experience while remaining compliant with emissions and warranty requirements. For serious power enthusiasts, however, it should be seen as a starting point rather than the ultimate upgrade.

Details:

MERCURY VERADO REFLASH KIT P#899959A01, BRAND NEW STILL IN BOX.

part #: 899959a01 price

  • $724.99

specifications ouboaen:

  • for makes: Mercury
  • mpn: 899959a01

offer ouboaen:

  • quantity: 1
  • availability: In Stock
  • started: February 6, 2026
  • sold: 0
  • options: Ship-to-home

general ouboaen:

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

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  • transit: 5-13 Days
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  • class: Standard
  • type: Fixed
  • service: USPS Ground Advantage
  • cost: $10.00

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  • city: Statesboro, Georgia
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for makes: mercury,
category: boat parts > outboard engines components, sku: 21835322278126632,
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