Chevy Buick Cadillac Saab Coolant Reservoir Dorman 603-228 - 1AROB00230

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


  • Brand New Radiator Overflow Bottle
  • Commonly called "Coolant Overflow Tank" or "Reservoir"
  • Strengthened and redesigned in the vulnerable areas of failure
  • Replacement for originals that are cracked or broken
  • Plastic construction
  • Includes Cap
  • Correct for vehicles WITHOUT level sensor provision

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.

Item Condition: New

Lifetime Warranty

This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge.

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Year Make Model Description
2010Buick Allure Buick Allure Coolant Reservoir
2010-2016Buick LaCrosse Buick LaCrosse Coolant Reservoir
2011-2017Buick Regal Buick Regal Coolant Reservoir
2010-2011Cadillac SRX Cadillac SRX V6 3.0L Coolant Reservoir
2012-2016Cadillac SRX Cadillac SRX Coolant Reservoir
2013-2016Cadillac XTS Cadillac XTS Coolant Reservoir
2013-2015Chevy Malibu Chevy Malibu Coolant Reservoir
2011Saab 9-5 Saab 9-5 L4 2.0L Coolant Reservoir
Only 2 left in stock
Part 1AROB00230
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Brand #: 603-228