Mishimoto MMTS-AC5-98L Low Temperature Performance Thermostat for Arctic Cat 500

The Mishimoto MMTS-AC5-98L is a low-temperature performance thermostat engineered specifically for 1998-2013 Arctic Cat 500 ATVs. Designed to keep your Arctic Cat running at optimal temperatures during demanding conditions, this thermostat opens at 145°F—lower than the stock opening temperature—allowing coolant to flow through the engine sooner and maintain cooler operating temperatures.

Key Features:

• Low temperature opening at 145°F helps prevent overheating in hot climates or under high loads
• Direct-fit replacement for 1998-2013 Arctic Cat 500 models
• Includes thermostat O-ring for fast and easy installation
• Fits and functions like OEM for hassle-free installation
• Ideal for trail riding, hauling, and extended low-speed operation
• Backed by Mishimoto Lifetime Warranty

Whether you're tearing up trails or working in the fields, maintaining proper engine temperature is critical for performance and longevity. The Mishimoto low-temperature thermostat helps protect your Arctic Cat 500's cooling system from the stress of idling and high-load driving conditions. Easy to install with the included O-ring gasket, this thermostat gets you back to work or play quickly.