1995-05 Chevy Astro GMC Safari Radiator Coolant Overflow Bottle Dorman 603-105 - 1AROB00047

Our coolant / windshield washer 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 Radiator Surge Tank by GM
    • Combination radiator & windshield washer tank
  • Includes caps
  • Not correct for models with rear wiper

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

Item Condition: New

WARNING: Cancer and Reproductive Harm -

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
Over flow
New part fit almost just like original. Mounting tabs
were a little high, had to force them down to install fasteners.
Very happy with part. Hope it last as long as original.
July 29, 2017
1 year ago
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Browse 1 question Browse 1 question and 2 answers
Does it have the mounting hardware included?
Gary O on Sep 24, 2017
BEST ANSWER: Mounting hardware is not included. You may reuse the existing or purchase from a local vendor.

Vehicle Fit

Year Make Model Description
1995-2005Chevy Astro Chevy Astro Radiator Coolant Overflow Bottle for Models without Rear Wiper Dorman 603-105
1995-2005GMC Safari GMC Safari Radiator Coolant Overflow Bottle for Models without Rear Wiper Dorman 603-105

This part replaces:

  • Dorman 603-105
  • OE # 15060681
  • OE # 12363309
Only 2 left in stock
Part #: 1AROB00047

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

Brand #: 603-105