Water Flange Thermostat (Arrowhead) (M52) (BMW 5 Series E39 / 7 Series E38)

R465.90

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Water Flange Thermostat (Arrowhead) (M52) (BMW 5 Series E39 / 7 Series E38) is designed for temperature regulation in BMW’s M52 engine cooling system. Check compatibility before purchase

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Water Flange Thermostat (Arrowhead) (M52) (BMW 5 Series E39 / 7 Series E38) is a crucial component in the cooling system of specific BMW models from the 5 Series E39 and 7 Series E38 range. This thermostat controls the flow of coolant between the engine and radiator, helping maintain optimal engine temperature for efficient performance and preventing overheating or excessive cooling.

The part is designed for installation at the water flange, where it regulates coolant circulation by opening and closing at the defined temperature threshold. Buyers should compare this unit with their current thermostat, focusing on the flange design, connector type, and compatibility with the M52 engine series in the specified BMW models.

This thermostat is categorized under engine thermostats specifically fitting BMW 5 Series vehicles. It is important to confirm that the vehicle model matches the E39 or E38 designation to ensure compatibility. When searching for a replacement, verify the SKU BB-251939 and the reference to “Arrowhead” to match this specific variant.

  • Located at the water flange, integral to coolant flow regulation
  • Compatible with BMW 5 Series E39 and 7 Series E38 using M52 engines
  • Check fitment against old part for shape and connection points

Need help matching this item to your vehicle? Use more Thermostat, Vehicle Parts Finder or Request a Part with your VIN, engine number, part number or clear photos.

SKU: BB-251939 Category: Tags: , , , , , Brand:

Frequently Asked Questions

Confirm fitment before ordering
Quick answers before you order. If anything is unclear, confirm fitment first using your VIN or part number and avoid mistakes.
Helpful product answers
What is the purpose of the Water Flange Thermostat (Arrowhead) for BMW 5 Series E39 and 7 Series E38?
This thermostat regulates the engine's coolant temperature by controlling the flow of coolant through the radiator. It ensures the engine reaches and maintains optimal operating temperature, preventing overheating or overcooling. Proper thermostat function is crucial for engine efficiency and longevity.
How do I know if the Water Flange Thermostat (Arrowhead) for my BMW E39 or E38 needs replacement?
Common signs include engine overheating, fluctuating temperature gauge readings, or heater malfunction. If the thermostat sticks open or closed, it disrupts coolant flow. Regular checks during servicing can prevent engine damage. Always replace with the correct model like the BB-251939 for compatibility.
Can I install the Water Flange Thermostat (Arrowhead) myself on my BMW 5 Series E39 or 7 Series E38?
Installation requires basic mechanical skills and proper tools. A common mistake is not draining the coolant before removal, leading to spills and airlocks in the system. To avoid this, drain the coolant first and bleed the system after installation to remove trapped air. If unsure, consult a professional or a Trade Partner.
Is the Water Flange Thermostat (Arrowhead) compatible with all BMW M52 engines?
This specific thermostat (BB-251939) is designed for BMW 5 Series E39 and 7 Series E38 models with the M52 engine. Compatibility with other M52 variants is not specified. Always verify your vehicle model and engine code before ordering to ensure proper fitment.
What should I do if I receive a faulty or incorrect Water Flange Thermostat from Brits Brothers™?
If you encounter any issues with your part, contact Brits Brothers™ promptly for assistance. They have a clear refund and returns policy available at Refunds. Keeping your purchase details handy will speed up the process.
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