Replaces

Radiator Overflow Bottle with Cap Dorman 603-125 - 1AROB00150

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.

Specifications:

  • Radiator Overflow Bottle with Cap
  • Commonly called Coolant Overflow Tank, Reservoir, or Expansion Tank
  • Plastic construction
  • Replaces dealer part number: 15808714
  • Direct replacement
  • Built to strict quality control standards
  • Correct for Diesel models ONLY

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 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

Year Make Model Description
2001-2006Chevy Silverado 2500 HD Chevy Silverado 2500 HD Radiator Overflow Bottle with Cap V8 6.6L Turbo Diesel Dorman 603-125
2007Chevy Silverado 2500 HD Classic Chevy Silverado 2500 HD Classic Radiator Overflow Bottle with Cap V8 6.6L Turbo Diesel Dorman 603-125
2001-2006Chevy Silverado 3500 Chevy Silverado 3500 Radiator Overflow Bottle with Cap V8 6.6L Turbo Diesel Dorman 603-125
2007Chevy Silverado 3500 Classic Chevy Silverado 3500 Classic Radiator Overflow Bottle with Cap V8 6.6L Turbo Diesel Dorman 603-125
2001-2006GMC Sierra 2500 HD GMC Sierra 2500 HD Radiator Overflow Bottle with Cap V8 6.6L Turbo Diesel Dorman 603-125
2007GMC Sierra 2500 HD Classic GMC Sierra 2500 HD Classic Radiator Overflow Bottle with Cap V8 6.6L Turbo Diesel Dorman 603-125
2001-2006GMC Sierra 3500 GMC Sierra 3500 Radiator Overflow Bottle with Cap V8 6.6L Turbo Diesel Dorman 603-125
2007GMC Sierra 3500 Classic GMC Sierra 3500 Classic Radiator Overflow Bottle with Cap V8 6.6L Turbo Diesel Dorman 603-125

This part replaces:

  • Dorman 603-125
  • OE # 15085725
  • OE # 15808714
  • OE # RC98
Part #: 1AROB00150

Out of Stock

Dorman
Brand #: 603-125