Genuine 17111723117 Engine Coolant Reservoir Cap

BMW Expansion Tank Mounting Clip

This Genuine engine cooling hardware is a direct-fit expansion tank mounting clip for select BMW applications. Use part number 17111723117 when replacing a worn or missing coolant reservoir retaining clip on supported 7 Series, 8 Series, 5 Series, and Z8 models.

Key Features

• Genuine OEM-style engine coolant reservoir mounting clip
• Part number 17111723117 for accurate ordering and service matching
• Supports expansion tank retention in the cooling system
• Fits select BMW 540i, 740i, 740iL, 750iL, 840Ci, 850Ci, and Z8 applications
• Direct replacement hardware for cooling system service work

Detailed Description

Genuine part 17111723117 is an expansion tank mounting clip used in BMW cooling system service. It is listed for 1997-2003 BMW 540i, 2003 BMW Z8 Alpina, 1997-2001 BMW 740i, 1996-2001 BMW 740iL, 1998-2001 BMW 750iL, 1996-1997 BMW 840Ci, and 1993-1997 BMW 850Ci. This BMW coolant reservoir clip helps secure the expansion tank in place and is a practical replacement when the original retaining hardware is damaged, loose, or missing.

This part cross-references no listed aftermarket numbers in the provided data. Search by 17111723117 when verifying fitment for BMW 540i, BMW 740i, and BMW 850Ci cooling system repairs.

What It Helps Address

• Loose or unsecured expansion tank mounting
• Missing or broken coolant reservoir retaining clip
• Cooling system service where the tank must be resecured
• Fitment issues during BMW coolant reservoir replacement
• Noise or movement caused by a poorly retained expansion tank

Installation Notes and Tips

Confirm the vehicle application against the part number before installation. Inspect the expansion tank mounting point and surrounding cooling system components for wear, cracking, or deformation before installing the new clip. For BMW 540i, 740i, 740iL, 750iL, 840Ci, 850Ci, and Z8 service, verify the clip seats fully and that the reservoir is retained securely after assembly.

Quality Assurance

Genuine OEM replacement hardware is specified for the listed BMW applications. Part number 17111723117 is cataloged for direct fitment on the vehicles shown above.