Replaces

Radiator Coolant Overflow Bottle Dorman 603-100 - 1AROB00004

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

This GM radiator coolant overflow bottle has been designed to replace the original design.

 

Specifications

  • Direct replacement for originals that are cracked or broken
  • Strengthened and redesigned in the vulnerable areas of failure
  • Plastic construction
  • Does not include cap (reuse old one)

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, GM 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.

  1. step : Removing the Coolant Overflow Bottle (0:41)
    • Remove the two 13mm bolts from the overflow bottle
    • Lift the bottle up and out
    • Turn the bottle on its side
    • Disconnect the clip from the lower hose with a flat blade screwdriver
    • Remove the lower hose
    • Plug the hole on the coolant bottle to prevent coolant from leaking
  2. step : Installing the Coolant Overflow Bottle (1:41)
    • Remove the upper hose from the old bottle and attach it to the new one
    • Push the lower hose onto the bottle
    • Slide the hose clamp up
    • Pinch the hose clamp with channel-lock pliers
    • Insert the coolant bottle into its slot
    • Insert and tighten the 13mm bolts to the overflow bottle

Tools needed for replacement:

    Pliers, Cutters & misc Wrenches

  • Channel-Lock Pliers

  • Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 13mm Socket

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Vehicle Fit

  • 1992-1994 Chevy Blazer Full Size Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 Chevy C1500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 Chevy C2500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 Chevy C3500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 Chevy K1500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 Chevy K2500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 Chevy K3500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1992-1999 Chevy Suburban C1500 Radiator Coolant Overflow Bottle Dorman 603-100
  • 1992-1999 Chevy Suburban C2500 Radiator Coolant Overflow Bottle Dorman 603-100
  • 1992-1999 Chevy Suburban K1500 Radiator Coolant Overflow Bottle Dorman 603-100
  • 1992-1999 Chevy Suburban K2500 Radiator Coolant Overflow Bottle Dorman 603-100
  • 1995-1999 Chevy Tahoe Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 GMC C1500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 GMC C2500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 GMC C3500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 GMC K1500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 GMC K2500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1988-1998 GMC K3500 Truck Radiator Coolant Overflow Bottle Dorman 603-100
  • 1992-1999 GMC Suburban C1500 Radiator Coolant Overflow Bottle Dorman 603-100
  • 1992-1999 GMC Suburban C2500 Radiator Coolant Overflow Bottle Dorman 603-100
  • 1992-1999 GMC Suburban K1500 Radiator Coolant Overflow Bottle Dorman 603-100
  • 1992-1999 GMC Suburban K2500 Radiator Coolant Overflow Bottle Dorman 603-100
  • 1992-1999 GMC Yukon Radiator Coolant Overflow Bottle Dorman 603-100
  • 2000 GMC Yukon XL 1500 Radiator Coolant Overflow Bottle Dorman 603-100
  • 2000 GMC Yukon XL 2500 Radiator Coolant Overflow Bottle Dorman 603-100

This part replaces:

  • OE # 15650373
  • Dorman 603-100
  • Hollander 671-00218
Part #: 1AROB00004

Dorman
Brand #: 603-100

How-to Video:

(03:04 min)