Product Information
Maximize the cooling performance of your 2018+ Mercedes-Benz G550 W463A M176 4.0L BiTurbo with the BlackBoost Wide Open Racing Thermostat. Engineered specifically for high-performance and motorsport applications, this upgraded thermostat maintains continuous coolant flow through the radiator, helping to reduce coolant temperatures and improve thermal management under extreme driving conditions.
Unlike the factory thermostat, which begins opening at approximately 100C (212F), the BlackBoost Racing Thermostat remains fully open, allowing unrestricted coolant circulation for maximum cooling efficiency. This helps reduce heat soak, stabilize engine temperatures, and maintain consistent performance during spirited driving, track use, towing, or other demanding applications.
Manufactured to BlackBoosts high-quality standards, this direct-fit thermostat is an excellent upgrade for performance-oriented vehicles where efficient cooling is essential. It is designed for seamless installation while retaining OEM fitment.
Note: This thermostat is intended for racing and performance applications only. It is not recommended for use in very cold climates, as the engine may take significantly longer to reach its normal operating temperature.
Features
Designed for Mercedes-Benz G550 W463A M176 4.0L BiTurbo (2018+)
Racing wide open thermostat
Continuous coolant circulation through the radiator
Improves cooling efficiency during high-performance driving
Reduces heat soak under demanding conditions
Helps maintain stable engine temperatures
Direct-fit replacement
High-quality construction for long-term durability
Ideal for track, off-road, towing, and performance applications
Vehicle Fitment
Mercedes-Benz G550 W463A M176 4.0L BiTurbo (2018+)
Engine Compatibility: Compatible with Mercedes-AMG M176, M177, and M178 engines where applicable. Please verify vehicle compatibility before purchasing.