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Mitsubishi S4L Thermostat 82C Engine Overheating Fix

Other Engine Parts
January 20, 2026
Category Connection: Other Engine Parts
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Tags:
#Electric Fuel Pump #Engine Fan Blade #diesel fuel separator
Brief: In this walkthrough, we highlight key design ideas and how they translate to performance. Watch as we demonstrate the 31A46-11200 S4L 82°C thermostat, a critical component for Mitsubishi S4L and S3L diesel engines. You'll see how this thermostat regulates coolant flow to prevent engine overheating, ensuring optimal operating temperature and stable performance in demanding conditions.
Related Product Features:
  • Specifically designed for Mitsubishi S4L and S3L diesel engines and small machinery.
  • Operates at a precise 82°C temperature to maintain optimal engine performance.
  • Automatically regulates coolant flow based on engine temperature for efficient operation.
  • Features high-precision temperature control elements for sensitive response.
  • Constructed with corrosion-resistant metal casing for enhanced durability.
  • Designed to operate stably in high-temperature, high-pressure, and vibration environments.
  • Helps engine quickly reach optimal operating temperature and maintain stable operation.
  • Compatible with multiple replacement part numbers including K6516441 and 30A46-00100.
FAQs:
  • Which Mitsubishi engine models is this thermostat compatible with?
    This thermostat is specifically designed for Mitsubishi S3L, S3L2, S4L, and S4L2 diesel engines and small machinery applications.
  • What is the operating temperature of this thermostat?
    The 31A46-11200 thermostat operates at 82°C, which is the optimal temperature for maintaining engine performance in the cooling system.
  • Can this thermostat handle demanding operating conditions?
    Yes, it features corrosion-resistant metal casing and high-precision control elements that ensure stable operation even in high-temperature, high-pressure, and vibration environments.
  • What other part numbers are compatible with this thermostat?
    This thermostat is interchangeable with multiple OEM part numbers including K6516441, K6516-441, 30A46-00100, 31B46-02200, and several others listed in the product description.
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