DORMAN 603963
DORMAN part number 603963 is a coolant reservoir in the Cooling System system. This catalog matches it to 5 year-and-engine configurations from 2019 to 2021.
Verified fitment includes 2021 Mazda CX-5 2.5L L4 ; 2020 Mazda 6 2.5L L4 ; 2020 Mazda CX-5 2.5L L4 ; 2019 Mazda 6 2.5L L4 ; 2019 Mazda CX-5 2.5L L4 . See every vehicle this part fits.
Frequently Asked Questions
What is DORMAN 603963?
DORMAN part number 603963 is a coolant reservoir with published application data for 5 vehicle configurations from 2019 to 2021. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.
Which vehicles does DORMAN 603963 fit?
This catalog matches 603963 to 5 year-and-engine configurations from 2019 to 2021. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.
Is DORMAN 603963 OEM or aftermarket?
What matters is the published application data for this part number, not the label on the box. DORMAN 603963 is listed with its manufacturer part number so you can compare it to an OEM number or another brand that covers the same fitment.
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