Radiator Coolant Expansion Tank Bleeder Screw, Auto Coolant Air Bleeder Screw with Rubber O-Ring, Brass Radiator Expansion Tank Drain Plug Replacement for X1 X3 17111712788

Specification:Material: Brass, RubberQuantity: 1 PCSColor: GoldenWeight: 14 gSize: 0.63×0.63 inchesThread Diameter: 0.39 inchesPackage Includes: 1 Exhaust Screw, 1 O-ringFeature: Leakproof, Wear-Resistant, DurableFit Type: Universal FitWhy do you need this coolant bleeder screw?-Equipped with a rubber O-ring, this screw serves both cushioning and sealing functions.-This coolant bleeder screw is compact and lightweight, making it easy to store and carry.-This drain plug boasts excellent wear resistance, and it is not prone to thread stripping, breakage or other issues even after long-term use.

• Practical Function: This automotive coolant bleeder screw can accurately expel trapped air in the cooling system, preventing air from hindering coolant circulation. It ensures that the coolant fully circulates through the engine, maintaining the engine at its ideal operating temperature
• Secure Sealing: Fitted with an O-ring, this screw ensures a tight seal for the coolant expansion tank, preventing coolant leakage. It also helps the cooling system maintain optimal pressure, guaranteeing stable operation under various working conditions and thereby further avoiding engine overheating
• Reliable Material: Made of brass, this bleeder screw is resistant to high temperatures and pressures, enabling it to adapt to the harsh conditions during engine operation. It also offers excellent corrosion resistance, capable of withstanding the erosion of coolant and not easily rusting or failing
• Easy Installation: Installing this automotive coolant bleeder screw is simple and quick. First, place the O-ring on the bleeder screw; then, align the screw with the mounting port of the car's coolant tank; finally, tighten the screw with a screwdriver until it fits snugly
• Compatibility Range: The coolant bleeder screw has a mounting diameter of M10 (0.39 inches). With an OEM number of 17111712788, it is compatible with models such as X1, X3, Z3, Z4, 325i, 328i, 525i, 528i, etc. Please check your vehicle model and original replacement part number before ordering