Ford Thunderbird Lincoln LS Radiator Coolant Overflow Tank Dorman 603-207 - 1AROB00034

Our 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: 5W4Z 8A080 AA, 5W4Z8A080AA
  • Strengthened and redesigned in the vulnerable areas of failure
  • Plastic construction
  • Commonly called Coolant Overflow Tank or Reservoir by Ford & Lincoln
  • Cap included

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

  • 2002-2005 Ford Thunderbird Radiator Coolant Overflow Tank Dorman 603-207
  • 2000-2006 Lincoln LS Radiator Coolant Overflow Tank Dorman 603-207

This part replaces:

  • OE # 5W4Z 8A080 AA
  • Dorman 603-207
  • Hollander 671-00203
Only 1 left in stock
Part #: 1AROB00034

Brand #: 603-207