BMW Engine Thermostat Assembly Replacement – Restores Cooling System Temperature Control – E39 E46 E65 E66 320d / Replaces Part No. 11712247723

Keep your BMW diesel running at the proper operating temperature with this replacement engine thermostat assembly. A failing thermostat can cause slow warm-up times, unstable temperature readings, poor heater performance, reduced fuel efficiency, and potential cooling system issues. This replacement assembly is designed to restore proper coolant flow regulation and help maintain consistent engine temperature.

Built as a direct replacement for BMW Part No. 11712247723, this thermostat assembly is ideal for restoring factory cooling system performance on compatible BMW diesel models. Whether you are replacing a stuck-open thermostat, addressing temperature control issues, or performing preventative cooling system maintenance, this part helps keep your engine operating within the correct temperature range.

Key Features:

• Direct replacement engine thermostat assembly
• Restores proper cooling system temperature control
• Helps regulate coolant flow for stable engine operation
• Ideal for fixing slow warm-up, low operating temperature, or overheating concerns
• Designed for select BMW diesel models
• Replaces Part No. 11712247723

FITMENT: BMW 3 Series / 5 Series / 7 Series

• BMW 3 Series – E46
  Production Date: 07/1997-07/2005
• BMW 5 Series – E39
  Production Date: 12/1997-12/2003
• BMW 7 Series – E38
  Production Date: 12/1997-07/2001
• BMW 7 Series – E65 / E66
  Production Date: 11/2001-02/2005

Replaces Part No. 11712247723

Please refer to the “Fitment” section in the product description for compatibility details.