Rein 64-21-6-951-946 Heater Hose Heater Core to Expansion Tank

The Rein 64-21-6-951-946 is a precision-engineered heater hose designed to connect the heater core to the coolant expansion tank in the vehicle's HVAC system. This critical component ensures proper coolant circulation through the heating system, maintaining optimal cabin temperature control and preventing overheating issues.

Key Features:

• EPDM rubber construction for superior heat and chemical resistance
• Engineered to OEM specifications for precise fit and reliability
• Heat-resistant up to 257°F (125°C) for demanding engine bay conditions
• Ozone and coolant-resistant materials ensure long service life
• Synthetic fiber reinforcement prevents collapse and maintains shape under pressure
• Direct replacement for BMW OEM part number 64216951946

Rein Automotive specializes in high-quality cooling system components, offering OE-equivalent parts at competitive prices. This heater hose is manufactured to meet or exceed SAE 20R4 standards for automotive coolant hoses, ensuring reliable performance in critical cooling system applications. The hose features molded end connections for secure, leak-free installation.

Installation Note: It is recommended to replace hose clamps when installing new coolant hoses to ensure proper sealing and prevent leaks.