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Dorman 603-500 Coolant Reservoir - Plastic, OE replacement
Part #: RB603500 | Mfr #: 603-500
Ships out in 1-2 business days
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5 out of 5 stars
(6 customer reviews)
Product reviews
by , December 9, 2011
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I have replaced this tank from Mazda at least 4 times. With the Dorman lifetime warranty I hope this is the last one I have to buy. It is an exact replacement for the OEM product.
by , November 8, 2010
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Arrived in short time and fit perfectly as a direct replacement.
The right part by North Texas, June 29, 2010
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called the dealership found out the part number and price. safed some money buying this one.
by hawki65, May 4, 2010
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Great price; much better then buying from the dealer; very easy to install.
Very good choice by Shooter, January 7, 2010
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It was a perfect fit and at a good price. Probably saved myself $150 or more by ordering and installing myself. The only issue I had was that the first tank I received was damaged. It's overflow tube had been broken off, but the tank was promptly replaced. Thank you!
Good Value for a difficult part to find by Archie's Mom, August 1, 2009
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I bought this part on line because I could not find it anywhere else. It came on time and was in perfect condition.



