SKP SK121379 Radiator Coolant Hose - Upper

Radiator Coolant Hose for BMW V8 Applications

The SKP SK121379 radiator coolant hose is a direct-fit upper hose for select BMW 545i and 645Ci models. It routes coolant from the water pump and supports proper engine cooling system flow in 2004-2005 applications.

Key Features

• Upper radiator coolant hose for BMW cooling system service
• Fits 2004-2005 BMW 545i, upper, from water pump
• Fits 2004-2005 BMW 645Ci, upper, from water pump
• OE cross-reference: Genuine 17127519248
• SKP part number SK121379 for catalog and service matching

Detailed Description

SKP SK121379 is a radiator coolant hose built for the upper cooling circuit on select BMW V8 models. It is listed for 2004-2005 BMW 545i and 2004-2005 BMW 645Ci, with the hose location noted as upper and from the water pump. This makes SK121379 a focused replacement choice when servicing the coolant hose path on these BMW applications. The part also cross-references Genuine 17127519248 for the same application.

Common Issues This Part Addresses

• Coolant seepage at the upper hose connection
• Cracked or hardened hose material from heat cycling
• Loss of coolant flow between the water pump and radiator circuit
• Visible swelling, splitting, or soft spots in the hose
• Cooling system leaks that trigger low coolant warnings

Installation Notes and Tips

Confirm the vehicle year, model, and hose routing before installation. This hose is specified for the upper position and from the water pump, so match the original routing on the BMW 545i or BMW 645Ci before removal. Inspect adjoining clamps, fittings, and nearby cooling components for wear or residue before completing the repair.

Quality Assurance

SKP cooling system parts are cataloged for direct application matching, and SK121379 is listed against the OE reference 17127519248 for fitment verification.