1. Special Fitment OE code:6978788 – Compatible with major European vehicles (for BMW X1,X2,X3,X5,X7,3 Series,4 Series,5 Series,M2,M3,M4,M6,Z3,Z4,8 Series,etc.), ideal for radiator, water pump, and heater core hose connections. 2. High-Temperature Resistance – Aerospace-grade aluminum withstands up to 300°F (150°C) and 50 PSI pressure, preventing cracks in extreme engine conditions. 3. Leak-Proof Design – Precision-machined grooves with reinforced O-rings ensure airtight sealing, solving common coolant leakage issues. 4. Quick-Installation – Barbed ends and pre-attached stainless steel clamps for tool-free, 1-minute replacement. 5. OE:6978788,NW16 Coolant Hose Connector Adapter,Radiator Pipe Line Fitting,Engine Heater Hose Assembly Junction Flange Repair Kit. 6978788,Coolant Hose Connector Adapter,Radiator Pipe Line Fitting for BMW X1,X2,X3,X5,X7,3 Series,4 Series,5 Series,M2,M3,M4,M6,Z3,Z4,8 Series,NW16 45° Engine Heater Hose Assembly Junction Flange 22mm. Upgrade Your Cooling System with Professional-Grade Reliability. -The Coolant Hose Connector is engineered for drivers who demand durability and precision. Coolant Hose Connector Adapter,Radiator Pipe Line Fitting,Engine Heater Hose Assembly Junction Flange Repair Kit.  Why Choose Us? - OEM Replacement Quality: Matches factory specs for Mercedes M276 engines, BMW N55 cooling lines, and VW/Audi EA888 platforms. - Stress-Tested: 1000+ thermal cycles validated in SAE J20-certified labs. - Eco-Friendly: Zero PVC materials, compliant with CARB regulations. Compatibility List (Partial): - for BMW: 3 Series,5 Series, X3,X5 (2010-2025)