Race Coolant Thermostat for Mercedes-AMG M156 / M159 Engines

Cooler Temps. More Consistent Power.
Take control of engine heat with our Race Coolant Thermostat—designed specifically for the legendary AMG M156 and M159 naturally aspirated V8 engines. Built to meet the demands of high-performance driving, this thermostat opens at a lower temperature than stock, helping reduce overall engine heat, minimize heat soak, and maintain power output even under extreme conditions.

Whether you're carving canyon roads, hitting the track, or simply daily-driving a tuned AMG, this is an essential upgrade for keeping your engine cool and responsive.

✅ Features & Benefits:

• Lower Activation Temperature
  Opens earlier than OEM (typically by 10–15°F / 5–8°C), promoting faster coolant circulation and reducing engine operating temps.

• Engineered for High-Performance Use
  Ideal for track, spirited driving, or tuned applications, where factory cooling systems are pushed beyond their limits.

• OEM-Style Fitment
  Direct bolt-on replacement for your factory thermostat. No modifications or custom parts required — just better performance.

• Enhanced Engine Protection
  Helps prevent overheating and protects vital engine components like pistons, valves, and bearings from excessive thermal stress.

• Built with Durability in Mind
  Manufactured using high-quality, heat-resistant materials for long service life under harsh thermal cycling.

📈 Performance Benefits:

• Reduces coolant temps by 8–12°C (15–20°F)

• Mitigates heat soak and performance drop-off

• Improves consistency under load and high ambient temps

• Supports longer engine life and reliability during aggressive driving

💬 Why Upgrade the Thermostat?

The M156/M159 V8 is an iconic AMG engine — known for its raw power and sound. But with high-revving performance comes heat. A factory thermostat may delay cooling activation, allowing temps to climb quickly under pressure. This race-spec thermostat ensures cooling kicks in sooner, keeping your engine in its optimal thermal zone for power and longevity.

⚙️ Vehicle Compatibility:

• C63 AMG (W204)

• E63 AMG (W211 / W212)

• SL63 AMG (R230)

• S63 AMG (W221)

• SLS AMG (C197 / R197)

• Any model equipped with the M156 or M159 AMG V8

🔧 Installation:

• Plug-and-play design

• No special tools or fabrication required

• Works with OEM coolant system and aftermarket heat exchangers

• Professional installation recommended

🏁 Built for AMG Drivers Who Push Limits

Whether you’re dialing in your track setup or just want better protection for your V8 beast, this race-grade thermostat is a smart, simple, and effective upgrade. Add to cart today and give your AMG the cooling advantage it deserves.