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Dorman 603-386 Engine Coolant Reservoir Compatible with Select Chevrolet Models

Free shipping on orders over $29.99

$42.89

$ 20 .99 $20.99

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 Sonic: 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019]


Ant
Reviewed in Canada on April 26, 2025
I’ll come in 6months if still working fine. But so far fit very well.
Reno. Boyz RC
Reviewed in Canada on March 1, 2024
Perfect fit for my car. Yhe dealership wanted twice the amount.
Ottawa 7
Reviewed in Canada on November 15, 2024
Just installed it, but fits perfectly. Had another brand from Amazon, and it failed within 7 months. Got a partial refund on it. This one is a Dorman , hopefully better quality, at twice the price. If it give problems, i will update this review.
BlondeRunner
Reviewed in the United States on October 22, 2024
This item is known to fail in general but if you can replace it yourself, you save about $350 rather than taking it to the dealership.It was incredibly simple to install and has been going strong for seven months now.
Matthew K
Reviewed in the United States on October 21, 2024
This is the third tank for this car, the first Dorman. Perfect fit, easy install. Holding up well.
Someone
Reviewed in the United States on November 29, 2023
Exact replacement for my '13 sonic 1.8.works well and easy to install! No more coolant leak
Mr. Luke
Reviewed in the United States on September 13, 2022
Easy to replace, no issues, good quality. Make sure you pinch off your hoses. Took only a few minutes. Seems better than the OEM.
Linda L.
Reviewed in Canada on May 27, 2022
Fit perfectly in our 2016 Chevy Sonic sedan. Was easy to install and solved our coolant leak issue.
ELMER Y SU RECORTADORA BLACK+DECKER
Reviewed in the United States on October 3, 2022
Easy to install. Excellent quality. Affordable price!
Manuel O.
Reviewed in the United States on April 1, 2022
Replaced my old coolant reservoir. Fits just right quick and easy to instal. Easier with 2 people but still doable with just 1. Hope it lasts.
Guidinchy
Reviewed in Mexico on March 5, 2021
Para un sonic 2015 LtEs idéntico al original los materiales. Acabados de buena calidadLo instale en minutos sin problemasY tengo una semana usándolo todo bien.Lo recomiendo
John Johnson
Reviewed in the United States on January 31, 2020
This is much higher quality that the stock bottle and was a perfect fit. 4 minutes to instal and if you lift the tube to trap some coolant in the old bottle you can get away with not spilling any.
Customer
Reviewed in the United States on April 4, 2020
Fit my 2012 Chevy sonic 1.4L turbo perfectly. Seems well constructed, maybe better than the factory tank. Extremely easy to install. Great value compared to the dealer.
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