SKP SK121384 Radiator Coolant Hose

BMW Radiator Coolant Hose SK121384

SKP SK121384 is a radiator coolant hose that routes coolant from the thermostat on select BMW applications. It is a direct-fit replacement for vehicles that use OE part number 11537544638 and is built for BMW cooling system service where a thermostat-to-hose connection is required.

Key Features

• Radiator coolant hose for the thermostat outlet connection
• OE cross-reference: Genuine 11537544638
• Fits select BMW 328i, 335i, 528i, X5, and Z4 applications
• Also fits BMW 330i, 325i, 525i, 530i, X3, 130i, 135i, 135is, 335is, and 335xi applications
• SKP part number SK121384 for cooling system repair and replacement

Fitment Details

• Fits 2017-2018 BMW 330i, N/A, From Thermostat
• Fits 2006 BMW 330i, N/A, From Thermostat
• Fits 2014-2016 BMW 528i, N/A, From Thermostat
• Fits 2008-2011 BMW 528i, N/A, From Thermostat
• Fits 2006-2016 BMW Z4, N/A, From Thermostat
• Fits 2007-2015 BMW 328i, N/A, From Thermostat
• Fits 2007-2015 BMW 335i, N/A, From Thermostat
• Fits 2008-2013 BMW 135i, N/A, From Thermostat
• Fits 2013 BMW 135is, N/A, From Thermostat
• Fits 2006-2013 BMW 325i, N/A, From Thermostat
• Fits 2011-2013 BMW 335is, N/A, From Thermostat
• Fits 2006-2010 BMW 130i, N/A, From Thermostat
• Fits 2006-2010 BMW 525i, N/A, From Thermostat
• Fits 2006-2010 BMW 530i, N/A, From Thermostat
• Fits 2006-2010 BMW X3, N/A, From Thermostat
• Fits 2006-2010 BMW X5, N/A, From Thermostat
• Fits 2007-2008 BMW 335xi, N/A, From Thermostat

What It Helps Address

• Coolant leaks at the thermostat-to-hose connection
• Cracked, swollen, or heat-aged radiator hose material
• Loss of coolant flow through the BMW cooling circuit
• Overheating caused by a damaged hose path from the thermostat
• Service replacement for a worn OE-style coolant hose

Installation Notes

Verify the vehicle’s engine and cooling layout against the listed fitment before installation. Inspect the thermostat outlet, hose routing, and adjoining clamps or seals for wear, corrosion, or residue before reassembly. On BMW cooling system repairs, bleeding the system after refill is important to remove trapped air and restore proper coolant circulation.

Quality Assurance

SKP SK121384 is an OE-reference replacement for Genuine 11537544638 and is cataloged for direct application matching on the listed BMW models, including BMW 328i, BMW 335i, and BMW X5 coverage.