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


  • Direct replacement for originals that are cracked or broken
  • Strengthened and redesigned in the vulnerable areas of failure
  • Plastic construction
  • Commonly called Coolant Recovery Tank by BMW
  • Fits E39 body chassis type
  • Does not include cap
    • Buyer will need to reuse original cap

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.

5.0 / 5.0
1 Review
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1 Star
Great service!
It was easy to order part and received quickly. The part was exactly what we were looking for. Thanks!
September 18, 2017
10 months ago
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Vehicle Fit

  • 2001-2003 BMW 525i Radiator Overflow Bottle
  • 1999-2000 BMW 528i Radiator Overflow Bottle
  • 1999-2000 BMW 528iT Radiator Overflow Bottle
  • 2001-2003 BMW 530i Radiator Overflow Bottle

This part replaces:

  • OE # 17 11 1 436 381
  • Dorman 603-536
Part #: 1AROB00023