The QuadBoss 403168 Thermostat is a direct OEM replacement designed specifically for Polaris models including the ATP 500, Xplorer 500 4X4, and several Diesel and Worker series from 1997 to 2004. Engineered to meet or exceed factory specifications, this thermostat ensures optimal engine temperature regulation and reliable performance. Its precise fit and function make it an ideal choice for maintaining performance and extending the lifespan of your powersports vehicle.

Constructed for easy installation and seamless operation, the QuadBoss thermostat replicates the original component's design, ensuring compatibility with your Polaris machinery. This part is manufactured to stringent quality standards, providing durability and consistent temperature control in demanding conditions. Whether you're restoring a vintage model or replacing a worn part, this thermostat offers a dependable solution for your powersports needs.

Features include a high-quality build that guarantees proper engine cooling, helping prevent overheating and engine damage. Its design allows it to operate efficiently within the specified temperature range, maintaining proper engine function during extended rides or tough terrain. This thermostat is an essential component for maintaining your vehicle's performance, ensuring that your Polaris ATV or utility vehicle continues to run smoothly and reliably.

Features:

• Direct OEM replacement ensures perfect fit and function

• Designed for Polaris ATP 500, Xplorer 500 4X4, Diesel, and Worker models (1997-2004)

• Constructed to meet or exceed factory specifications for durability

• Engine temperature regulation to prevent overheating

• Easy installation for quick maintenance

Fitment:
1997 Polaris Xplorer 500 4X4 Base
1999 Polaris Diesel (455cc) Base
1999 Polaris Worker 500 Base
2000 Polaris Diesel (455cc) Base
2000 Polaris Xpedition 425 Base
2001 Polaris Diesel (455cc) Base
2001 Polaris Sportsman 400 Base
2001 Polaris Worker 500 Base
2001 Polaris Xpedition 425 Base
2002 Polaris Sportsman 400 Base
2002 Polaris Xpedition 425 Base
2003 Polaris Sportsman 400 Base
2004 Polaris Atp 500 Base
2004 Polaris Sportsman 400 Base
2005 Polaris Atp 500 Base
2005 Polaris Sportsman 400 Base
2006 Polaris Sportsman 450 Base
2007 Polaris Sportsman 450 Base
2011 Polaris Sportsman 400 HO Base
2012 Polaris Sportsman 400 HO Base
2013 Polaris Sportsman 400 HO Base
2014 Polaris Sportsman 400 HO Base
2018 Polaris RZR XP Turbo S Base
2019 Polaris RZR XP 4 Turbo S Base
2019 Polaris RZR XP Turbo S Base
2020 Polaris RZR XP 4 Turbo Base
2020 Polaris RZR XP 4 Turbo S Base
2020 Polaris RZR XP Turbo Base
2020 Polaris RZR XP Turbo S Base
2021 Polaris RZR XP 4 Turbo Base
2021 Polaris RZR XP Turbo Base