2001-05 Lexus IS300 Radiator Overflow Bottle Dorman 603-430 - 1AROB00084

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.


  • Includes the Radiator Fan Shroud
  • Direct replacement for originals that are cracked or broken
  • Replaces dealer part number: 16711-46350, 1671146350
  • Strengthened and redesigned in the vulnerable areas of failure
  • Plastic construction

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

  • 2001-2005 Lexus IS300 Radiator Overflow Bottle Dorman 603-430

This part replaces:

  • OE # 1671146350
  • Dorman 603-430
Only 2 left in stock
Part #: 1AROB00084

Brand #: 603-430