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Dorman 603-078 Front Engine Coolant Reservoir Compatible with Select Chevrolet / GMC Models

Free shipping on orders over $29.99

$46.33

$ 22 .99 $22.99

In Stock

About this item

  • Direct replacement - this engine coolant reservoir matches the fit and function of the original part
  • Ideal solution - engineered for a seamless installation
  • Durable construction - manufactured from quality materials to withstand underhood heat and vibration
  • Trustworthy design - backed by 100 years of automotive aftermarket experience
  • Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool


This replacement engine coolant reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration. It is engineered and manufactured to match the fit and function of the original part. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Chevrolet Cargo Van: 2003, 2004] - [Chevrolet Express 1500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014] - [Chevrolet Express 2500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019] - [Chevrolet Express 3500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019] - [Chevrolet Express 4500: 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017] - [Chevrolet Express Cargo: 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018] - [Chevrolet Express Pasajeros: 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018] - [GMC Savana 1500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014] - [GMC Savana 2500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019] - [GMC Savana 3500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019] - [GMC Savana 4500: 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016]


Joseph Marion
2025-08-12 10:10:01
OEM QUALITY AND FIT AS WITH ALL THEIR PRODUCTS ! 35 years as a tech , I known when I order Dorman , its going to fit and perform .
Brian
2025-07-13 12:02:27
Fit perfectly on my 06 Chevy cargo van 2500 and no longer have a coolant leak
Troy D.
2025-07-05 14:41:17
A nice replacement for the OEM coolant tank that by design would siphon out antifreeze. It's not too often you can say the replacement is better than the original, but in this case that's true. I did like the original OEM cap, so I used that, but that's really my only complaint. The company shipped by overnight air to Alaska! Overall fantastic service for an item that was better than the original. Great packaging as well, double boxed.
Customer
2025-06-11 15:19:43
Replacing a 2006 Chevy Express leaking coolant overflow and was not sure on compatibility and was pleased to find same footprint on new. It is a smaller capacity but will work well. I recommend this. Shipped quickly, would recommend.
Gerardo
2025-04-18 10:34:49
Fit like a glove and no more mysterious leaks. I’m doing the Trump dance.
L. Artemis
2025-03-28 16:18:25
Came as advertised and fits perfect.
Dennis A Sapp
2025-03-17 15:55:20
It solved the leakage problem. A better design than the original by far!
GRCSR
2025-02-11 12:07:29
Perfect fit, fast delivery.
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