Rein 17-12-7-540-127 Upper Radiator Hose BMW N54 N55 Engine

The Rein 17-12-7-540-127 is an OE-quality upper radiator hose designed as a direct replacement for BMW vehicles equipped with N54 and N55 turbocharged engines. This molded EPDM rubber hose carries hot engine coolant from the engine to the radiator to be cooled, playing a critical role in maintaining proper engine temperature.

Key Features:

• Direct OE replacement for BMW part number 17127540127
• Manufactured with premium EPDM rubber resistant to heat, salt, oil, and road debris
• Includes factory-style thermoplastic quick-connect fittings and O-rings for leak-free installation
• Pre-formed to exact OE specifications for proper fit without cutting or modification
• End 1 diameter: 1.850 inches; End 2 diameter: 1.810 inches
• Includes all connections and attachment hardware as originally equipped
• TÜV approved quality meets original BMW manufacturing standards

Rein Automotive specializes in European vehicle replacement parts, providing OE-quality components that are identical to factory parts in fit, form, and function. This upper radiator hose is located on the upper left side of the radiator underneath the air intake. The most common failure point is the nipple connection to the expansion tank hose, which can cause coolant leaks and insufficient cooling. Regular inspection and preventative replacement of aging coolant hoses helps avoid overheating situations and costly repairs.

Rein hoses eliminate installation hassles with complete assemblies that install quickly without reusing old connectors that may leak. Replace your deteriorating radiator hose with this factory-equivalent part to restore reliable cooling system performance.