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  3. POLARIS 221401

POLARIS 221401 Cylinder Head Dome Cfi Pro Thermostat

fits model: Rmk, 800. make: Polaris. year: 2010–2016.

221401 Polaris 2010-16 Rmk 800 Snowmobile Cylinder Head Dome Cfi Pro With Thermostat

( Manufacturer Part Number: 221401 ), ( Part Type: Cylinder Head Thermostat )

Review POLARIS Snowmobile Cylinder Head Dome Cfi Pro Thermostat fits RMK 800 2010–2016

Polaris 221401 Cylinder Head Dome CFI Pro Thermostat for 2010-2016 RMK 800 Snowmobiles

Description:

The Polaris 221401 Cylinder Head Dome CFI Pro Thermostat is an essential component designed specifically for the Polaris RMK 800 snowmobiles manufactured between 2010 and 2016. This thermostat is engineered to ensure optimal engine performance and temperature regulation under various riding conditions.

The Cylinder Head Dome CFI Pro Thermostat is a part of the fuel injection system and plays a crucial role in maintaining the engine's ideal operating temperature. This thermostat is meticulously crafted using high-quality materials that can withstand the harsh conditions of a snowmobile environment. It is designed to open and close at precise temperatures to regulate the coolant flow to the engine.

The Polaris 221401 thermostat is a significant upgrade compared to the OEM (Original Equipment Manufacturer) thermostat. The CFI Pro version offers improved temperature sensitivity, ensuring the engine is neither running too hot nor too cold. This results in enhanced engine durability, increased fuel efficiency, and smoother overall performance.

Key Features:

1. Designed specifically for Polaris RMK 800 snowmobiles from 2010 to 2016.

2. High-quality construction using durable materials to withstand the rigors of snowmobiling.

3. Enhanced temperature sensitivity for optimal engine performance and temperature regulation.

4. Improved fuel efficiency due to precise temperature control.

5. Smooth engine operation by maintaining consistent engine temperature.

The Polaris 221401 Cylinder Head Dome CFI Pro Thermostat is an excellent investment for snowmobilers who want to maximize their machine's performance and extend its lifespan. By ensuring the engine operates at the correct temperature, this thermostat contributes to a more enjoyable and reliable riding experience.

When replacing the thermostat on your Polaris RMK 800 snowmobile, it is essential to use a genuine Polaris part like the 221401 Cylinder Head Dome CFI Pro Thermostat. Using an aftermarket or incorrect part may result in poor performance, reduced durability, or even damage to the engine. Trust the experts at Polaris to provide you with the highest-quality replacement parts for your snowmobile.

The Polaris RMK 800 Cylinder Head Dome CFI Pro Thermostat (part number 221401) is a performance upgrade designed for Polaris RMK 800 snowmobiles from the 2010 to 2016 model years. This thermostat is an aftermarket upgrade that aims to provide better cooling performance and improved fuel economy. In this analysis, we will discuss the potential advantages and disadvantages of installing this aftermarket thermostat in your Polaris RMK 800 snowmobile.

Advantages:

1. Improved Cooling Performance: The CFI Pro Thermostat is designed to provide better cooling performance by maintaining consistent engine temperatures. This can help prevent overheating and reduce the likelihood of damage to the engine components.

2. Improved Fuel Economy: By maintaining consistent engine temperatures, the CFI Pro Thermostat can help improve fuel economy. This can save you money on fuel costs and reduce your carbon footprint.

3. Enhanced Power and Performance: Some users have reported increased power and performance after installing the CFI Pro Thermostat. This can result in a more enjoyable riding experience and improved acceleration.

Disadvantages:

1. Cost: The CFI Pro Thermostat is an aftermarket upgrade, which means it comes with a higher price tag compared to the OEM thermostat. This may be a deterrent for some riders who are on a budget.

2. Installation Complexity: Installing the CFI Pro Thermostat may require some mechanical skills and knowledge. It may take some time and effort to remove the old thermostat and install the new one.

3. Potential Compatibility Issues: While the CFI Pro Thermostat is designed to fit most Polaris RMK 800 snowmobiles from the 2010 to 2016 model years, there may be some compatibility issues with certain models or configurations. It is essential to ensure that the thermostat is compatible with your specific snowmobile before making a purchase.

Conclusion:

The Polaris RMK 800 Cylinder Head Dome CFI Pro Thermostat (part number 221401) is an aftermarket upgrade that offers several benefits, including improved cooling performance, enhanced fuel economy, and increased power and performance. However, it comes with a higher price tag, installation complexity, and potential compatibility issues. Ultimately, the decision to install this thermostat depends on your budget, mechanical skills, and riding preferences. If you prioritize improved cooling performance, fuel economy, and power, and you are willing to invest in the upgrade, then the CFI Pro Thermostat may be a worthwhile investment for your Polaris RMK 800 snowmobile.

Recommendation:

If you are considering installing the Polaris RMK 800 Cylinder Head Dome CFI Pro Thermostat (part number 221401), I would recommend doing thorough research before making a purchase. Ensure that the thermostat is compatible with your specific snowmobile model and configuration, and consider the benefits and drawbacks carefully. If you have the necessary mechanical skills and are willing to invest in the upgrade, then the CFI Pro Thermostat can provide significant improvements to your snowmobile's performance and efficiency. However, if you are on a tight budget or are unsure of your mechanical abilities, you may want to consider other options or consult with a professional mechanic before making a decision.

Details:

Includes top and temp sensor thermostat housing The product is a 2010 16 Polaris RMK 800 snowmobile cylinder head dome piston designed for use with the CFI PRO system. Manufactured by Polaris, the part numbers 221401 and 5632373 are associated with this high-quality snowmobile component.

part #: 221401 prices

  • $55.00-$100.00

specifications snowpar:

  • for models: Rmk, 800
  • for makes: Polaris
  • for years: 2010-2016
  • mpn: 221401
  • part type: Cylinder Head Thermostat

seller snowpar:

  • rating: 100.0%
  • # reviews: 82
  • city: Wasilla

returns snowpar:

  • policy: No Returns

payments snowpar:

  • wallet: Paypal
  • money order
  • credit card: Diners-club
  • other

shipping snowpar:

  • transit: 5-10 Days
  • class: Standard
  • carrier: USPS
  • type: Calculated
  • cost: $11.15
  • service: USPS Ground Advantage

offer snowpar:

  • quantity: 1
  • sold: 0
  • availability: In Stock
  • started: December 10, 2025
  • best offers: True
  • options: Ship-to-home

general snowpar:

  • Parts Accessories > Snowmobile Parts > Other Parts
  • condition: Used
for models: rmk, 800, for makes: polaris, for years: 2010-2016, part type: cylinder head thermostat,
category: snowmobile parts > parts, sku: 9322722997973793,

Polaris 221401 Is Similar To:

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2 offers $55.00–$100.00 USD
  • Offer #1: $100.00 price + $11.84 shipping estimate = $111.84* total. Includes top and temp sensor and thermostat and thermostat housing The product is a 2010-16 Polaris RMK 800 snowmobile cylinder head dome piston designed for use with the CFI PRO system.+$11.84 shipping
  • Offer #2: $55.00 price + $0.00 shipping estimate = $55.00* total. Open Communication.FREE SHIPPING

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