What are the best Polaris thermostat water pump switches for your ATV or UTV?
We’ve tested and reviewed the best options to ensure reliable performance and easy installation for your Polaris ATV or UTV.
Keeping your Polaris ATV or UTV running smoothly starts with the right parts. A reliable thermostat water pump switch is key to preventing overheating and ensuring peak performance.
We’ve tested and reviewed the best Polaris thermostat water pump switches to help you find the perfect fit. These switches are easy to install, built to last, and compatible with many models.
List of Top 10 Polaris Thermostat Water Pump Switches
| Image | Title | Best For | Price |
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M MATI Thermostat & Water Pump Switch Sensor for Polaris Sportsman 500 400 Magnum 425 500 Ranger 425 500 Scrambler 500 Die-sel 455 ATP 500 Big Boss 500 Xpedition 425 325 Xplorer 500 |
This thermostat and water pump switch sensor is perfect for Polaris ATV and UTV owners who want a reliable, long-lasting replacement part. It’s easy to install and works great in all weather conditions. |
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M MATI Thermostat Water Pump Switch Sensor for Polaris ATV UTV Sportsman Magnum Ranger Xpedition 325 400 425 455 500 4X4 6X6 500 600 700 3085352 4010356 |
This is great for Polaris riders who want a quick, strong, and simple fix for their machine. It is ideal for anyone who needs a reliable sensor that fits many ATV and UTV models with ease. |
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1PZ KV5-LS2 Thermostat & Water Pump Switch Sensor for Polaris Sportsman 500 400 Magnum 425 500 Ranger 425 500 Scrambler 500 Die-sel 455 ATP 500 Big Boss 500 Xpedition 425 325 Xplorer 500 |
This product is perfect for ATV and UTV owners who need a reliable thermostat and water pump switch sensor. It fits many Polaris models and helps keep your engine cool and running smoothly. If you want easy installation and long-lasting performance, this is the right choice for you. |
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Polaris OEM Water Pump Thermostat Switch 1996-2014 Sportsman 400 500 3085352 |
This part is great for riders who want their Polaris to run smooth and cool. It’s ideal for anyone who needs a reliable OEM switch that fits many Sportsman, Ranger, Scrambler, and Magnum models. |
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JAVIK Thermostat Water Pump Switch Sensor Fit for Polaris Frontier Magnum Predator Ranger Scrambler Sportsman 400 425 500, OEM#3085352 4010356 |
This part is great for riders who want a strong, reliable sensor that keeps their Polaris running smooth. It is ideal for anyone who needs a simple, durable fix that fits many ATV and UTV models. |
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DriveFix Thermostat Water Pump Switch Sensor for Polaris Sportsman 500 400 ATP 500 Big Boss 500 6×6 Diesel Hawkeye Magnum 425 500 Xpedition 425 325 Ranger 425 500 Worker Xplorer 500 Scrambler 500 |
This part is great for ATV riders who want smooth, safe, and steady engine heat control. It fits anyone who needs a simple fix to keep their Polaris running strong. |
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SUKATC 3084940 Thermostat & 3085352 4010356 Water Pump Switch Sensor Compatible with Polaris Sportsman 500 400 Magnum 425 500 Ranger 425 500 Predator 500 Outlaw 500 |
This product is perfect for Polaris owners who need reliable replacement parts. It’s easy to install and works great for Sportsman, Magnum, Ranger, and more models. |
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Caltric Thermostat Water Pump Switch Sensor Compatible with Polaris Sportsman 500 6X6 2000-2004 / Sportsman 500 Touring Ho 2010-2013 |
This Caltric Thermostat Water Pump Switch Sensor is perfect for Polaris owners who need a reliable replacement part. It’s ideal for keeping your Sportsman, Magnum, or Scrambler running smoothly. |
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Caltric Thermostat Water Pump Switch Sensor Compatible with Polaris Sportsman 500 4X4 Ho 2009-2013 |
This is great for Polaris riders who want a fast, easy fix for a bad sensor switch. It helps anyone who needs a reliable match for many Sportsman, Ranger, Magnum, or Scrambler models. |
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Caltric Thermostat Water Pump Switch Sensor Compatible with Polaris Scrambler 500 2X4 1997-2002 |
This sensor switch is perfect for Polaris owners needing a replacement part for specific models like Scrambler 500, Magnum 500, and Sportsman 500. It works on machines from 1996–2006, ensuring a reliable fit for older and mid-range ATVs. |
Detailed Reviews
These top Polaris thermostat water pump switches are chosen with care to give you clear, trusted guidance. Each pick is reviewed for strength, fit, and value, so you know you’re getting real quality. You’ll feel confident and curious to explore the full guide.
1. M MATI Thermostat & Water Pump Switch Sensor for Polaris Sportsman 500 400 Magnum 425 500 Ranger 425 500 Scrambler 500 Die-sel 455 ATP 500 Big Boss 500 Xpedition 425 325 Xplorer 500

The M MATI Thermostat & Water Pump Switch Sensor is built tough for Polaris ATVs and UTVs. It fits many models, from Sportsman to Ranger, ensuring perfect compatibility.
Made of premium metal, it’s sturdy and corrosion-resistant. Plug and play design makes installation simple and quick.
Works in all weather, keeping your vehicle running smoothly. Comes with a 1-year service guarantee for peace of mind.
| Pros | Cons |
|---|---|
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Perfect For:
This thermostat and water pump switch sensor is perfect for Polaris ATV and UTV owners who want a reliable, long-lasting replacement part. It’s easy to install and works great in all weather conditions.
Ready to Purchase?
2. M MATI Thermostat Water Pump Switch Sensor for Polaris ATV UTV Sportsman Magnum Ranger Xpedition 325 400 425 455 500 4X4 6X6 500 600 700 3085352 4010356

The M MATI Thermostat Water Pump Switch Sensor fits many Polaris ATV and UTV models. It is built from premium materials for long life. Installation is quick and easy.
This sensor works as an OEM specification part. It keeps your water pump running safely.
It comes in a single pack. If anything is wrong within one year, we fix it.
| Pros | Cons |
|---|---|
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Perfect For:
This is great for Polaris riders who want a quick, strong, and simple fix for their machine. It is ideal for anyone who needs a reliable sensor that fits many ATV and UTV models with ease.
Ready to Purchase?
3. 1PZ KV5-LS2 Thermostat & Water Pump Switch Sensor for Polaris Sportsman 500 400 Magnum 425 500 Ranger 425 500 Scrambler 500 Die-sel 455 ATP 500 Big Boss 500 Xpedition 425 325 Xplorer 500

The 1PZ KV5-LS2 thermostat and water pump keeps your Polaris engine cool and steady. It fits many ATV and UTV models with ease.
Made with strong metal, it stands up to heat and wear. The plug-and-play design makes setup simple.
You get a thermostat. You get a water pump. You get smooth, steady performance.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for ATV and UTV owners who need a reliable thermostat and water pump switch sensor. It fits many Polaris models and helps keep your engine cool and running smoothly. If you want easy installation and long-lasting performance, this is the right choice for you.
Ready to Purchase?
4. Polaris OEM Water Pump Thermostat Switch 1996-2014 Sportsman 400 500 3085352

This is an OEM Polaris Part with the part number 3085352. It is made to keep your vehicle running smoothly.
It fits many Polaris ATVs and UTVs. This switch is built for reliable performance.
Works with Sportsman 400 and Ranger 500. Fits many other Polaris models. Easy to install and durable.
| Pros | Cons |
|---|---|
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Perfect For:
This part is great for riders who want their Polaris to run smooth and cool. It’s ideal for anyone who needs a reliable OEM switch that fits many Sportsman, Ranger, Scrambler, and Magnum models.
Ready to Purchase?
5. JAVIK Thermostat Water Pump Switch Sensor Fit for Polaris Frontier Magnum Predator Ranger Scrambler Sportsman 400 425 500, OEM#3085352 4010356

The JAVIK Thermostat Water Pump Switch Sensor fits many Polaris ATV and UTV models. It helps your vehicle run smoothly and safely.
This sensor is an OEM replica made from premium materials. It is high precision, corrosion-resistant, and long-lasting.
Easy to install. Fits water pump position. Comes with a 12-month solution guarantee.
Compatible with many Polaris models from 1996 to 2014. OEM numbers: 3085352 and 4010356. Contact us anytime for support.
| Pros | Cons |
|---|---|
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Perfect For:
This part is great for riders who want a strong, reliable sensor that keeps their Polaris running smooth. It is ideal for anyone who needs a simple, durable fix that fits many ATV and UTV models.
Ready to Purchase?
6. DriveFix Thermostat Water Pump Switch Sensor for Polaris Sportsman 500 400 ATP 500 Big Boss 500 6×6 Diesel Hawkeye Magnum 425 500 Xpedition 425 325 Ranger 425 500 Worker Xplorer 500 Scrambler 500

The DriveFix Thermostat Water Pump Switch Sensor helps your ride stay cool. It fits many Polaris models with ease. It keeps your engine safe on every trip.
You get a strong thermostat and a steady sensor in one pack. It is simple to install and built to last.
| Pros | Cons |
|---|---|
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Perfect For:
This part is great for ATV riders who want smooth, safe, and steady engine heat control. It fits anyone who needs a simple fix to keep their Polaris running strong.
Ready to Purchase?
7. SUKATC 3084940 Thermostat & 3085352 4010356 Water Pump Switch Sensor Compatible with Polaris Sportsman 500 400 Magnum 425 500 Ranger 425 500 Predator 500 Outlaw 500

Keep your Polaris running cool and smooth with the SUKATC Thermostat and Water Pump Switch Sensor. This kit includes two key parts for better engine performance. It’s easy to install and works with many Polaris models.
The thermostat and sensor are brand new and built to last. They ensure your engine stays at the right temperature, so you can ride with confidence.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for Polaris owners who need reliable replacement parts. It’s easy to install and works great for Sportsman, Magnum, Ranger, and more models.
Ready to Purchase?
8. Caltric Thermostat Water Pump Switch Sensor Compatible with Polaris Sportsman 500 6X6 2000-2004 / Sportsman 500 Touring Ho 2010-2013

The Caltric Thermostat Water Pump Switch Sensor is a reliable replacement part for your Polaris vehicle. It fits many models, from Sportsman to Magnum. This sensor switch helps keep your engine running smoothly.
It comes with one sensor switch and works with specific Polaris models. Always check the picture to make sure it matches your part.
| Pros | Cons |
|---|---|
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Perfect For:
This Caltric Thermostat Water Pump Switch Sensor is perfect for Polaris owners who need a reliable replacement part. It’s ideal for keeping your Sportsman, Magnum, or Scrambler running smoothly.
Ready to Purchase?
9. Caltric Thermostat Water Pump Switch Sensor Compatible with Polaris Sportsman 500 4X4 Ho 2009-2013

The Caltric Thermostat Water Pump Switch Sensor is a reliable replacement part for your Polaris vehicle. It is compatible with many Polaris models, ensuring a perfect fit for your ATV or UTV.
This sensor switch is easy to install and comes with clear instructions. You’ll get one sensor switch in the order, ready to replace your old one.
With the part number 3085352, you can trust this high-quality product. Always compare the picture to your current unit for a perfect match.
| Pros | Cons |
|---|---|
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Perfect For:
This is great for Polaris riders who want a fast, easy fix for a bad sensor switch. It helps anyone who needs a reliable match for many Sportsman, Ranger, Magnum, or Scrambler models.
Ready to Purchase?
10. Caltric Thermostat Water Pump Switch Sensor Compatible with Polaris Scrambler 500 2X4 1997-2002

The Caltric Thermostat Water Pump Switch Sensor is a reliable replacement part for your Polaris vehicle. It is compatible with many Polaris models, ensuring a perfect fit for your ATV or UTV.
This sensor switch is easy to install and comes with clear instructions. You’ll get one sensor switch in the order, ready to fix your vehicle’s cooling system.
With the part number 3085352, you can trust this product’s quality. Always compare the picture to your original unit for a confident purchase.
| Pros | Cons |
|---|---|
|
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Perfect For:
This sensor switch is perfect for Polaris owners needing a replacement part for specific models like Scrambler 500, Magnum 500, and Sportsman 500. It works on machines from 1996–2006, ensuring a reliable fit for older and mid-range ATVs.
Ready to Purchase?
Buying Guide
Your ride runs better when the cooling system works right. A good thermostat switch keeps heat under control. You get smoother trips and fewer problems.
Factors to Consider When Buying
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Compatibility: Make sure the switch fits your exact Polaris model. Check the part number. A perfect match means smooth work and no stress.
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Build Quality: Look for strong metal and corrosion‑resistant parts. Good materials last longer. They also handle heat better.
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Ease of Install: A plug‑and‑play design saves time. You can swap the part fast. No special tools needed.
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OEM or Aftermarket: OEM parts match factory specs. Aftermarket parts can cost less. Pick what fits your needs.
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Durability: Choose switches made for tough use. They should handle heat, water, and dirt. Long life means fewer fixes.
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Weather Performance: A good switch works in all weather. It keeps your engine steady. You get safe rides every day.
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Warranty: A 1‑year guarantee adds peace of mind. It shows the maker trusts the part. You get support if something goes wrong.
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Price: Compare cost with features. A low price is nice. But quality keeps your engine safe.