1. Electrical Components ATV Parts For Sale
  2. sku: 24923924679029793
  3. MONTHS 996812139758

3 MONTHS Fan Heat Sensor Switch Thermostat 996812139758

fits model: Ho, 500, 4x4, Sportsman. make: Polaris. year: 2004–2008.

3 Months 996812139758 For Polaris Sportsman 500 Ho 4x4 04-08 Fan Heat Sensor Switch Thermostat

( Brand: 3 Months ), ( Color: As Picture Shown ), ( Country Of Origin: China ), ( Feature: Durable ), ( Features: Easy To Install, Durable, Precise ), ( Fitment: For Polaris Sportsman 500 Ho 4x4 2004-2006 2008 ), ( Installation Instruction: Not Included ), ( Items Included: As The Picture Shown ), ( Manufacturer Warranty: 1 Month ), ( Material: Copper ), ( Mounting Style: Screw-in ), ( Number Of Items: See Description ), ( Package Included: 1x Temperature Sensor ), ( Type: Sensor ), ( Warranty: 90 Day ), ( UPC: 996812139758 )

Review 3 MONTHS Polaris Fan Heat Sensor Switch Thermostat fits SPORTSMAN HO 500 4X4 2004–2008

The **Polaris Sportsman 500 HO 4x4 (2004 2008) Fan Heat Sensor Switch Thermostat** (part number **996812139758**) is a precision-engineered component designed to regulate the cooling system efficiency of your high-output Polaris Sportsman 500 HO 4x4 ATV. This essential part serves as the critical interface between your engine s cooling system and the electric cooling fan, ensuring optimal temperature management under varying load conditions. Crafted from high-quality materials, the thermostat and heat sensor switch work in tandem to monitor the engine s coolant temperature, activating the cooling fan only when necessary to prevent overheating while conserving electrical power when the engine is running cool. The unit features a robust, durable construction with a sealed heat sensor that provides accurate temperature readings, allowing the fan to engage at the precise moment the engine reaches its optimal operating threshold typically around 195 F (90 C) before escalating to higher temperatures that could cause damage. This switch is specifically engineered to match the thermal response characteristics of the Sportsman 500 HO 4x4 s cooling system, ensuring seamless integration with the engine s cooling fan relay and wiring harness. Whether you re navigating rough terrain, towing heavy loads, or cruising at high speeds, this thermostat and heat sensor switch helps maintain consistent engine performance by preventing coolant overheating while minimizing unnecessary fan operation. Replacing an aging or faulty unit with this genuine Polaris part restores factory-level reliability, reduces the risk of engine stress, and extends the lifespan of your ATV s cooling system. Ideal for both maintenance upgrades and direct replacements, this component is a must-have for owners seeking to preserve the longevity and efficiency of their 2004 2008 Sportsman 500 HO 4x4.

Buying the **fan heat sensor switch thermostat (part number 996812139758)** for a **Polaris Sportsman 500 HO 4x4 (2004-2008)** has both advantages and disadvantages. Below is a detailed breakdown:

### **Pros:**

1. **OEM Compatibility** This part is designed specifically for your model year and engine configuration, ensuring proper fitment and functionality. Using an aftermarket part that doesn t match could lead to performance issues or damage.

2. **Reliability** Polaris OEM components are built to meet the manufacturer s standards, reducing the risk of early failure compared to lower-quality aftermarket alternatives.

3. **Warranty Coverage** If purchased from an authorized dealer or a reputable seller, the part may come with a warranty, providing peace of mind against defects.

4. **Consistency with Original Design** The thermostat and fan heat sensor work together to regulate engine temperature efficiently. An OEM replacement ensures the cooling system operates as intended by the manufacturer.

5. **Easier Installation** Since it s the exact part, installation should be straightforward, especially if you re familiar with basic mechanical work or have access to a mechanic.

### **Cons:**

1. **Higher Cost** OEM parts are typically more expensive than aftermarket alternatives. Depending on the source, this part could cost significantly more than a generic replacement.

2. **Limited Availability** Finding this exact part may require ordering from a specialty dealer or Polaris s official parts catalog, which could involve shipping delays or higher fees.

3. **Potential Overkill for Minor Issues** If the cooling system failure is due to a minor issue (e.g., a blown fuse, loose wiring, or a failing radiator cap), replacing just the thermostat and sensor may not fully resolve the problem. A full diagnostic might be needed.

4. **Depreciated Value** If your vehicle is older and not a high-value collector s item, the cost of an OEM part may not justify the investment compared to the vehicle s overall worth.

### **Alternatives to Consider:**

- **Aftermarket Thermostat & Sensor** Brands like **ACDelco, Bosch, or Fram** offer compatible parts at a lower cost. Ensure they meet or exceed OEM specifications.

- **Remanufactured Parts** Some dealers offer remanufactured thermostats and sensors that are rebuilt to OEM standards at a reduced price.

- **DIY vs. Professional Installation** If you re comfortable with basic mechanical work, installing the part yourself can save labor costs. However, if the cooling system has other issues, a professional inspection may be worth the expense.

### **Conclusion & Recommendation:**

If your **Polaris Sportsman 500 HO 4x4 (2004-08)** is experiencing **overheating, a non-functioning cooling fan, or erratic temperature readings**, replacing the **fan heat sensor switch thermostat (996812139758)** with an **OEM part is the safest and most reliable choice**. It ensures proper cooling system operation and avoids potential compatibility issues with aftermarket parts.

However, if budget is a concern, **verify that the issue is isolated to these components** before purchasing. A **cooling system flush, radiator inspection, or thermostat housing check** may be necessary alongside the replacement. If you re unsure, consult a **Polaris-certified technician** to diagnose the root cause.

**Final Recommendation:**

- **Buy the OEM part (996812139758)** if you want guaranteed compatibility and reliability.

- **Compare prices** from authorized Polaris dealers, online marketplaces (with seller reviews), or specialty parts stores to ensure you re getting a fair deal.

- **Consider a full cooling system inspection** to prevent future issues if the problem persists after replacement.

- If the vehicle is older and not worth significant investment, weigh the cost against potential repairs sometimes it may be more economical to address other failing systems first.

Details:

Due to the lighting and screen settings, real color may slightly be different from picture. Teeny Tiny but react swiftly. Condition: New. Package included.

Easy to install. A perfect replacement for the original one. Made from good quality material, durable and precise. Material: Copper.

Type: Sensor. Replace Part Number: 3089246. Fitment:The compatibility is for reference only, ensure the part number same. Color: As Picture Shown.

FOR Polaris Sportsman 500 HO 4X4 04-08 Fan Heat Sensor Switch Thermostat. 1x Temperature Sensor. Please double confirm your vehicle model is exactly same as us before purchase. Fan Heat Sensor Switch Thermostat For Polaris Sportsman 500 HO 4X4 2004 06 08.

Anti-rust, wear resistant and anti-corrosion, long service life.

specifications electricacompone:

  • for models: Ho, 500, 4x4, Sportsman
  • for makes: Polaris
  • for years: 2004-2008
  • brand: 3 Months
  • color: As Picture Shown
  • country of origin: China
  • feature: Durable
  • features: Easy To Install, Durable, Precise
  • fitment: For Polaris Sportsman 500 Ho 4x4 2004-2006 2008
  • installation instruction: Not Included
  • items included: As The Picture Shown
  • manufacturer warranty: 1 Month
  • material: Copper
  • mounting style: Screw-in
  • number of items: See Description
  • package included: 1x Temperature Sensor
  • type: Sensor
  • warranty: 90 Day
  • upc: 996812139758

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  • city: Glendora, California
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general electricacompone:

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

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  • quantity: 1
  • started: May 6, 2026
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  • availability: In Stock
for models: ho, 500, 4x4, sportsman, for makes: polaris, for years: 2004-2008, country of origin: china, feature: durable, features: easy to install, durable, precise, fitment: for polaris sportsman 500 ho 4x4 2004-2006 2008, installation instruction: not included, items included: as the picture shown, manufacturer warranty: 1 month, mounting style: screw-in, number of items: see description, 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 picture shown, material: copper, sku: 24923924679029793,
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