Genuine BMW Radiator Adjustment Screw

The Genuine BMW Radiator Adjustment Screw, also called a radiator flow adjustment screw, coolant flow adjustment screw or radiator adjusting screw, is an OEM replacement part for the BMW cooling system. It threads into the radiator and works as a drain plug. It also helps regulate coolant flow through the radiator.

Key Features:

• Genuine BMW original equipment part, built to factory specifications
• Combines a radiator drain plug with a coolant flow adjustment function
• Helps maintain proper coolant circulation, which supports stable engine operating temperatures
• Simple to install and to remove for coolant service
• Offered in variants for different transmission types, such as automatic and manual gearbox applications

A worn, damaged or leaking adjustment screw can cause coolant loss and poor cooling performance. Replacing it with a Genuine BMW part restores a proper seal and dependable coolant flow. Choose the child item that matches your application.