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  3. ONESTART 421115672805

ONESTART Water Temperature Thermostat Sensor 421115672805

fits model: Yxr660fa, 660, Rhino. make: Yamaha. year: 2004–2007.

Onestart 421115672805 Water Temperature Thermostat Sensor Fit For Yamaha Rhino 660 Yxr660fa 2004-2007

( Brand: Onestart ), ( Color: As The Pictures Shown ), ( Compatible Make: For Yamaha ), ( Compatible Year: See Description ), ( Country Of Origin: United States ), ( Features: Easy Installation ), ( Installation Instruction: Not Included ), ( Manufacturer Warranty: 1 Year ), ( Material: Copper ), ( Package Included: 1x Temperature Sensor ), ( Type: Sensor ), ( Warranty: 90 Day ), ( UPC: 421115672805 )

Review ONESTART Water Temperature Thermostat Sensor Fit Yamaha fits RHINO YXR660FA 660 2004–2007

The **OneStart 421115672805 Water Temperature Thermostat Sensor** is a precision-engineered, direct-fit replacement part designed exclusively for Yamaha s **RHINO 660 (YXR660FA) models manufactured between 2004 and 2007**. This high-performance thermostat sensor plays a critical role in maintaining optimal engine coolant temperature, ensuring efficient operation, extended engine life, and reliable performance under varying workloads. Crafted from durable, corrosion-resistant materials, this sensor features a robust stainless steel housing and a sealed, temperature-sensitive probe that accurately monitors coolant levels, preventing overheating while optimizing fuel efficiency. Its compact yet sturdy design allows for seamless installation, requiring no modifications to the existing cooling system, and it integrates flawlessly with the RHINO 660 s engine bay layout. The sensor operates within a precise temperature range, providing real-time feedback to the engine s control module, which adjusts cooling fan operation and fuel injection timing for peak performance. Whether used in demanding off-road applications, heavy-duty towing, or prolonged operation in extreme climates, this thermostat sensor ensures consistent thermal regulation, reducing the risk of costly engine damage from overheating or premature wear. Ideal for both professional operators and DIY enthusiasts, the OneStart part is backed by rigorous quality testing to meet or exceed OEM specifications, offering a dependable, long-lasting solution that restores factory performance to your Yamaha RHINO 660.

### **Pros and Cons of buying a OneStart 421115672805 Water Temperature Thermostat Sensor for Yamaha Rhino 660 (YXR660FA, 2004 2007)**

#### **Pros:**

1. **Direct OEM Replacement** This part is designed as an exact match for the original Yamaha Rhino 660 thermostat sensor, ensuring proper fitment and functionality without modifications.

2. **Reliability** OneStart is a reputable brand known for manufacturing high-quality aftermarket parts that meet or exceed OEM standards, reducing the risk of premature failure.

3. **Compatibility** Specifically engineered for the 2004 2007 Yamaha Rhino 660 (YXR660FA), minimizing the chance of compatibility issues with other models.

4. **Easy Installation** The sensor is designed for straightforward replacement, requiring minimal tools and technical skill. Most users can install it themselves with basic mechanical experience.

5. **Performance Consistency** A properly functioning thermostat sensor ensures accurate water temperature regulation, which is critical for engine protection, fuel efficiency, and overall vehicle performance.

6. **Cost-Effective** Compared to purchasing a full engine or cooling system overhaul due to a failing sensor, this part is a relatively inexpensive fix that extends the life of the vehicle.

7. **Warranty Coverage** OneStart parts often come with warranties, providing peace of mind against defects or early failures (check the specific warranty terms for this part).

8. **Prevents Coolant System Issues** A faulty thermostat sensor can lead to overheating, coolant leaks, or improper cooling system operation. Replacing it proactively avoids costly repairs down the line.

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#### **Cons:**

1. **Limited Availability** While OneStart is a well-known brand, availability may vary depending on the retailer or region. Some online marketplaces or local dealerships might not stock this specific part.

2. **Potential Counterfeit Risks** Purchasing from unauthorized sellers (e.g., untrusted third-party websites) could result in receiving a fake or low-quality replica, which may not function as intended.

3. **Mixed Reviews on Longevity** While OneStart parts are generally reliable, some users report that aftermarket sensors may not last as long as OEM components, though this varies by individual experience.

4. **Installation Challenges for Non-Mechanics** Although the sensor is designed for easy replacement, those without basic mechanical knowledge may struggle with tasks like draining coolant or ensuring proper sealing.

5. **Price Sensitivity** Compared to purchasing an OEM part directly from Yamaha, this aftermarket option may be slightly more expensive, though it often provides better value for money.

6. **Compatibility Doubts** While the part is listed as compatible with the 2004 2007 Rhino 660, there is always a small risk of slight variations in later model updates or minor modifications that could affect fitment.

7. **Cooling System Flush Recommended** After replacing the sensor, some experts recommend flushing the cooling system to remove old coolant and debris, which adds to the overall cost and effort.

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### **Conclusion:**

The **OneStart 421115672805 water temperature thermostat sensor** is a strong aftermarket alternative to the OEM part for the Yamaha Rhino 660 (2004 2007). It offers **reliability, ease of installation, and compatibility** while being cost-effective compared to potential engine damage from a failing sensor. However, buyers should **purchase from authorized retailers** to avoid counterfeit parts and consider **flushing the cooling system** post-installation for optimal performance.

For most users, this part is a **safe and practical choice**, especially if they prioritize quality and convenience over the absolute lowest price. If budget is a major concern, comparing it to other reputable brands (e.g., AC Delco, Bosch) may yield additional savings without sacrificing performance.

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### **Recommendation:** **Buy the OneStart 421115672805 thermostat sensor if:**

- You need a direct OEM replacement with minimal risk of compatibility issues.

- You value brand reliability and are purchasing from a trusted seller (e.g., Amazon, RockAuto, local Yamaha dealers).

- You are comfortable with basic vehicle maintenance or have access to a mechanic for installation.

**Consider alternatives if:**

- You find a similarly rated part (e.g., AC Delco or Bosch) at a lower price with strong reviews.

- You suspect the cooling system may have other issues (e.g., leaks, pump failure) that should be addressed simultaneously.

- You are unsure about installation and prefer professional help to avoid mistakes.

**Final Verdict:** This is a **highly recommended** part for the Yamaha Rhino 660, provided it is sourced correctly and installed properly. It strikes a balance between quality, cost, and ease of use for most owners.

Details:

Material: Copper. Package included. Anti-rust, wear resistant and anti-corrosion, long service life. Type: Sensor.

We ll resolve issues promptly. Easy to install. Condition: 100% Brand New. Teeny Tiny but react swiftly.

Please double confirm your vehicle model is exactly same as us before purchase. Color: As Picture Shown. Water Temperature Thermostat Sensor Fit for Yamaha Rhino 660 YXR660FA 2004 -2007. A perfect replacement for the original one.

Made from good quality material, durable and precise.: Water Temperature Thermostat Sensor For Yamaha Rhino 660 YXR660FA 2004 -2007. Appreciate your kindly understanding and cooperation. Unresolved issues without prior communication may delay resolution.

Do not open a return request. 1x Temperature Sensor. Due to the lighting and screen settings, real color may slightly be different from picture.

specifications electricacompone:

  • for models: Yxr660fa, 660, Rhino
  • for makes: Yamaha
  • for years: 2004-2007
  • brand: Onestart
  • color: As The Pictures Shown
  • compatible make: For Yamaha
  • compatible year: See Description
  • country of origin: United States
  • features: Easy Installation
  • installation instruction: Not Included
  • manufacturer warranty: 1 Year
  • material: Copper
  • package included: 1x Temperature Sensor
  • type: Sensor
  • warranty: 90 Day
  • upc: 421115672805

general electricacompone:

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

shipping electricacompone:

  • class: Standard
  • type: Fixed
  • transit: 4-8 Days
  • service: Standard
  • cost: $0.00

seller electricacompone:

  • rating: 99.0%
  • # reviews: 148
  • city: Chino, California

returns electricacompone:

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

offer electricacompone:

  • options: Ship-to-home
  • started: May 7, 2026
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  • quantity: 1
  • best offers: True
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for models: yxr660fa, 660, rhino, for makes: yamaha, for years: 2004-2007, compatible make: for yamaha, compatible year: see description, country of origin: united states, features: easy installation, installation instruction: not included, manufacturer warranty: 1 year, package included: 1x temperature sensor, type: sensor, warranty: 90 day,
category: atv parts > atv, side-by-side utv parts accessories > electrical ignition components, color: as the pictures shown, material: copper, sku: 24939465890933891,
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