Genuine 17127540127 Radiator Coolant Hose - Upper - Radiator To Engine

BMW Upper Radiator Coolant Hose

This Genuine radiator coolant hose is the upper hose that routes coolant from the radiator to the engine. It is a direct-fit replacement for select BMW models, including BMW Z4, BMW X1, BMW 135i, BMW 335i, BMW 335i xDrive, BMW 335is, BMW 1 Series M, and BMW 335xi applications.

Key Features

• Genuine replacement part for the cooling system
• Upper radiator-to-engine hose location
• Part number 17127540127 for ordering and fitment verification
• Compatible with select BMW turbocharged and performance applications
• Built for factory-style routing in the engine cooling circuit

Fitment Details

• Fits 2009-2016 BMW Z4, Upper - Radiator To Engine
• Fits 2013-2015 BMW X1, Upper - Radiator To Engine
• Fits 2008-2013 BMW 135i, Upper - Radiator To Engine
• Fits 2007-2013 BMW 335i, Upper - Radiator To Engine
• Fits 2009-2013 BMW 335i xDrive, Upper - Radiator To Engine
• Fits 2011-2013 BMW 335is, Upper - Radiator To Engine
• Fits 2011 BMW 1 Series M, Upper - Radiator To Engine
• Fits 2007-2008 BMW 335xi, Upper - Radiator To Engine

What This Hose Helps Address

• Coolant leaks at the upper radiator hose connection
• Cracked, swollen, or heat-aged hose material
• Loss of coolant flow between the radiator and engine
• Overheating caused by a damaged cooling hose
• Soft or weakened hose sections near factory fittings

Installation Notes

Verify the part number 17127540127 against the existing hose before installation. Inspect adjoining clamps, radiator necks, and engine-side connections for wear, corrosion, or residue before reassembly. Drain and refill coolant according to BMW service procedures, then check the system for leaks after warm-up.

Quality Assurance

Genuine OE replacement part for BMW cooling system service. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.