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:

  • Direct replacement for originals that are cracked or broken
  • Replaces dealer part numbers: 15808716, 15066786
  • Strengthened and redesigned in the vulnerable areas of failure
  • Plastic construction
  • Commonly called Radiator Surge Tank by GM
  • Includes cap and Low Fluid Sensor
  • Correct for gas engines only
    • Does not fit diesel engines

Note: For 2007 truck models, the Classic Style has a crease down the center of the door skin where on the new body styles, the door skin is smooth. This part is for the Classic style truck.

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. Please keep your invoice for proof of this warranty.

  1. step : Removing the Air Intake Box (0:57)
    • Loosen the clamp on the air intake hose.
    • Remove the air intake hose from the intake box.
    • Pull back on the air intake box and pull it up and out.
  2. step : Removing the Coolant Bottle (1:23)
    • Remove the coolant bottle cap.
    • Use pliers to pinch the tabs on the clip together and slide the clip back and remove the hose.
    • Remove the 10mm bolt from the front of the bottle and the 10mm nut from the back.
    • Pull the coolant bottle up and out.
    • Disconnect the connector.
    • Clamp the coolant hose with a pair of vice grips.
    • Slide the clip back with pliers and pry off the coolant hose.
    • Remove the bottle and dump the coolant into a clean bottle or container.
  3. step : Replacing the Coolant Bottle (3:40)
    • Reconnect the coolant hose and remove the vice grip.
    • Slide the coolant hose clip back into place.
    • Reconnect the harness.
    • Put the bottle into place.
    • Replace the 10mm nut and bolt on the bottle.
    • Reconnect the other hose on the coolant bottle and slide the clip forward.
    • Use a funnel and pour the coolant into the new overflow bottle.
    • Replace the cap.
  4. step : Replacing the Air Intake Box (5:27)
    • Push the intake hose back and push the back end of the intake box down into place.
    • Reconnect the air intake hose.
    • Tighten the clamp on the hose.

Tools needed for replacement:

    General Tools

  • Funnel
  • Drain Pan

  • Pliers, Cutters & misc Wrenches

  • Vise Grip Pliers
  • Needle nose pliers

  • Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket

5.0 / 5.0
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Radiator Coolant overflow bottle
The correct coolant overflow bottle was easy to find and to order. We didn't have to search through a lot of web sites to find exactly what we wanted.
March 2, 2017
Purchased
1 year ago
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Vehicle Fit

  • 2002-2006 Cadillac Escalade Radiator Coolant Overflow Bottle with Level Sensor
  • 2003-2006 Cadillac Escalade ESV Radiator Coolant Overflow Bottle with Level Sensor
  • 2002-2006 Cadillac Escalade EXT Radiator Coolant Overflow Bottle with Level Sensor
  • 2002-2006 Chevy Avalanche 1500 Radiator Coolant Overflow Bottle with Level Sensor
  • 2002-2006 Chevy Avalanche 2500 Radiator Coolant Overflow Bottle with Level Sensor
  • 1999-2006 Chevy Silverado 1500 Radiator Coolant Overflow Bottle with Level Sensor
  • 2007 Chevy Silverado 1500 Classic Radiator Coolant Overflow Bottle with Level Sensor
  • 2001-2003 Chevy Silverado 1500 HD Radiator Coolant Overflow Bottle with Level Sensor
  • 1999-2004 Chevy Silverado 2500 (excluding Diesel Engines) Radiator Coolant Overflow Bottle with Level Sensor
  • 2001-2006 Chevy Silverado 2500 HD (excluding Diesel Engines) Radiator Coolant Overflow Bottle with Level Sensor
  • 2007 Chevy Silverado 2500 HD Classic (excluding Diesel Engines) Radiator Coolant Overflow Bottle with Level Sensor
  • 2001-2006 Chevy Silverado 3500 (excluding Diesel Engines) Radiator Coolant Overflow Bottle with Level Sensor
  • 2007 Chevy Silverado 3500 Classic (excluding Diesel Engines) Radiator Coolant Overflow Bottle with Level Sensor
  • 2000-2006 Chevy Suburban 1500 Radiator Coolant Overflow Bottle with Level Sensor
  • 2000-2006 Chevy Suburban 2500 (excluding Diesel Engines) Radiator Coolant Overflow Bottle with Level Sensor
  • 2000-2006 Chevy Tahoe Radiator Coolant Overflow Bottle with Level Sensor
  • 1999-2007 GMC Sierra 1500 Radiator Coolant Overflow Bottle with Level Sensor
  • 2007 GMC Sierra 1500 Classic Radiator Coolant Overflow Bottle with Level Sensor
  • 2001-2003 GMC Sierra 1500 HD Radiator Coolant Overflow Bottle with Level Sensor
  • 1999-2004 GMC Sierra 2500 (excluding Diesel Engines) Radiator Coolant Overflow Bottle with Level Sensor
  • 2001-2006 GMC Sierra 2500 HD (excluding Diesel Engines) Radiator Coolant Overflow Bottle with Level Sensor
  • 2007 GMC Sierra 2500 HD Classic (excluding Diesel Engines) Radiator Coolant Overflow Bottle with Level Sensor
  • 2001-2006 GMC Sierra 3500 (excluding Diesel Engines) Radiator Coolant Overflow Bottle with Level Sensor
  • 2007 GMC Sierra 3500 Classic (excluding Diesel Engines) Radiator Coolant Overflow Bottle with Level Sensor
  • 2000-2006 GMC Yukon Radiator Coolant Overflow Bottle with Level Sensor
  • 2000-2006 GMC Yukon XL 1500 Radiator Coolant Overflow Bottle with Level Sensor
  • 2000-2006 GMC Yukon XL 2500 Radiator Coolant Overflow Bottle with Level Sensor
  • 2003-2009 Hummer H2 Radiator Coolant Overflow Bottle with Level Sensor

This part replaces:

  • OE # 15066786
  • OE # 15808716
  • Dorman 603-102
  • Hollander 671-00213
Part #: 1AROB00032

How-to Video:

(06:23 min)