Water Flange Head (Cooltec) (M47N M57N) (BMW 1 Series E81/E87 / 3 Series E46 / E90 / 5 Series E39 / E60 / X3 E83 / X5 E53 / E70) is a crucial cooling system component designed to regulate coolant flow within specific BMW engines. It interfaces with the cooling hoses and engine block, helping maintain optimal operating temperature by directing coolant where it is needed in the M47N and M57N engine variants.
This water flange head fits a wide range of BMW models, including the 1 Series E81/E87, 3 Series E46 and E90, 5 Series E39 and E60, as well as SUVs like the X3 E83 and X5 E53/E70. When sourcing this part, compare the existing flange with this unit to confirm compatibility, noting the Cooltec design which is typical for these engine variants. Buyers should verify model and engine codes against the listing to ensure correct match.
The condition of the water flange can directly affect cooling efficiency, and damages such as cracks or leaks may lead to overheating. Replacing the water flange head can restore proper coolant circulation and help avoid potential engine damage. For any uncertainty in fit or compatibility, it is advisable to contact the sales desk or submit a request for a specific part through the available support services.
Need help matching this item to your vehicle? Use Vehicle Parts Finder, Request a Part or Platinum Sales Desk with your VIN, engine number, part number or clear photos.

