11537552403 Thermostat 102°C for BMW 1 Series E87 E88 E82 3 Series E92 E93 5 Series E61

🌡️ BMW High-Temperature Thermostat (102°C) – OEM 11537552403

Optimize engine operating temperature and fuel efficiency with the
COWIN OEM-Standard Thermostat. This unit (Ref: 11 53 7 552 403)
opens at 102°C and is widely used across BMW 1 Series, 3 Series,
and 5 Series Touring models, especially those equipped with turbocharged engines.

✅ Key Features & Benefits

• High Opening Temperature: 102°C helps reach optimal combustion temperature faster.
• Turbo Engine Ready: Ideal for N43, N45, N47, N52 and related engines.
• OEM Replacement: Direct fit for part number 11 53 7 552 403.
• Fuel Efficiency: Reduces warm-up time and improves economy.

🚗 Vehicle Compatibility

⚙️ Technical Specifications

• Product: Thermostat
• Opening Temperature: 102 °C
• OEM Part Number: 11 53 7 552 403 / 11537552403
• Material: Reinforced Polymer / Metal Flange
• Quality: 100% Tested & Calibrated

🛠️ Installation Note

High-temperature thermostats are commonly used on modern BMW engines.
Always bleed the cooling system thoroughly after installation.
Replace the housing gasket or O-ring to ensure a leak-free seal.

🏭 Why Choose COWIN Auto Parts?

COWIN (Gaoyun) specializes in European compact and executive vehicle cooling systems.
Every thermostat is factory-tested for accurate opening temperature and long-term durability.