2003-08 Radiator Overflow Bottle Cap Dorman 902-5601 - DMROB00007

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Our coolant overflow bottle caps are some of the highest quality replacements on the market! This radiator coolant overflow cap has been designed to replace the original design.


  • Brand New Dorman Radiator Overflow Bottle Cap
  • Replaces dealer part number: 15075118
  • Plastic construction
  • Direct replacement
  • Built to strict quality control standards

Replace your broken or cracked cap now with this great fitting part.

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to

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 : Replacing the Radiator Cap (0:18)
    • Remove the cap when the engine has fully cooled
    • Replace the cap with the correct PSI rating

Tools needed for replacement:

    1A - No Tools Needed

  • No Tools Needed

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Year Make Model Description
2003-2008Chevy C4500 Kodiak Chevy C4500 Kodiak Radiator Overflow Bottle Cap Dorman 902-5601
2003-2008GMC C5500 Topkick GMC C5500 Topkick Radiator Overflow Bottle Cap Dorman 902-5601
Part #: DMROB00007

Out of Stock

Brand #: 902-5601

How-to Video:

(02:03 min)