Genuine 17111711987 Radiator Inlet Pipe O-Ring

Radiator Inlet Pipe O-Ring for BMW Cooling Repair

This Genuine radiator inlet pipe O-ring is a direct-fit sealing component for BMW cooling system service. Part number 17111711987 is used at the coolant flange connection to help maintain a secure seal and reduce coolant leakage at the inlet pipe interface.

• Genuine OE-style radiator inlet pipe O-ring
• Part number 17111711987 for BMW cooling system repairs
• 14.5 x 2.5 mm seal size
• For coolant flange 17 11 1 707 817
• Fits a wide range of BMW 3 Series, 5 Series, 7 Series, X3, X1, and Z4 applications

Fitment and Application Details

Compatible with BMW cooling system service on models including the BMW Z4, BMW X1, BMW 128i, BMW 135i, BMW 328i, BMW 335i, BMW X3, BMW 540i, BMW 740i, BMW 740iL, and BMW 750iL. This part number 17111711987 is also used on select BMW 325Ci, 325i, 325xi, 330Ci, 330i, 330xi, 328xi, 335xi, 335is, 335d, 323Ci, 323i, and 328Ci applications.

This part cross-references OE coolant flange application 17 11 1 707 817 for the same sealing location.

What This Seal Helps Address

• Coolant seepage at the radiator inlet pipe connection
• Loss of seal integrity at the coolant flange interface
• Maintenance service on aging BMW cooling system seals
• Leak repair after coolant flange or inlet pipe replacement

Installation Notes

Verify the seal size and coolant flange reference before installation. Clean the sealing surfaces thoroughly, inspect the mating flange for wear or damage, and replace the O-ring whenever the coolant inlet connection is serviced. Use the exact BMW application listed for proper fitment.

Quality Assurance

Genuine parts are built to OE specifications for BMW cooling system service, supporting accurate fit and dependable sealing performance on the listed applications.