Our radiator coolant overflow bottles are some of the highest quality replacements on the market!

This radiator coolant overflow tank has been designed to replace the original design.


  • Direct replacement for originals that are cracked or broken
  • Replaces dealer part numbers: 17 13 7 501 959, 17137501959, PCF000033
  • Plastic construction
  • Commonly called Coolant Reservoir Tank assembly
  • Has provision for Low Fluid Sensor, but is not included
    • Buyer will need to reuse original low fluid sensor

Now you can buy a high quality coolant reservoir that is built to strict quality control standards. REPLACE your broken or cracked one now with this great fitting Radiator Overflow Bottle.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

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Vehicle Fit

  • 2004-2006 BMW X5 Radiator Overflow Bottle V8 4.8L
  • 2004-2006 BMW X5 Radiator Overflow Bottle V8 4.4L

This part replaces:

  • OE # 17137501959
Part #: 1AROB00050