Rein 17-11-1-712-788 Coolant Bleeder Screw with O-Ring for Cooling System

The Rein 17-11-1-712-788 is a replacement coolant bleeder screw designed for BMW and MINI cooling systems. This essential component allows for proper air bleeding during coolant system service and maintenance, ensuring optimal cooling system performance and preventing air pockets that can lead to overheating.

Key Features:

• Includes rubber O-ring seal for leak-free operation
• Direct replacement for BMW OEM part number 17111712788
• Black plastic construction designed to OEM specifications
• Installs on radiator expansion tank or coolant reservoir
• Single screw required per vehicle in most applications

This bleeder screw is a critical maintenance component that can become stripped, cracked, or damaged over time due to heat cycling and repeated use. The Rein replacement provides reliable sealing and proper venting function to maintain cooling system integrity. The included O-ring ensures a proper seal against coolant leaks when the screw is properly tightened.