Dorman - OE Solutions Engine Coolant Reservoir Non-Pressurized for Mazda 3 2018-2014, Mazda 3 Sport 2018-2014, Mazda 6 2021-2014, Mazda CX‑5 2021-2013 603-963

Engine coolant reservoir replacement for 2018-2014 Mazda 3 and 2018-2014 Mazda 3 Sport, 2021-2014 Mazda 6, and 2021-2013 Mazda CX‑5 that replaces the factory part.

Built to meet the manufacturer’s design intent for reliable service.

Key Features

• Engine coolant reservoir engineered to match fit and function of original part
• Manufactured from quality materials to withstand underhood heat and engine vibration
• Non-pressurized design for safe operation
• Backed by 100 years of automotive aftermarket experience

Benefits

• Reliable service with durable construction
• Easy installation as a direct-fit replacement
• Reduces risk of leaks and overheating
• Supports consistent engine cooling performance

Application

This part is for Mazda owners who need to replace a failing or damaged coolant reservoir in their 2018-2014 Mazda 3, 2018-2014 Mazda 3 Sport, 2021-2014 Mazda 6, or 2021-2013 Mazda CX‑5.

Fitment Notes

• Mazda 3 2018-2014
• Mazda 3 Sport 2018-2014
• Mazda 6 2021-2014
• Mazda CX‑5 2021-2013

Why Choose Dorman - OE Solutions?

• Choosing Dorman aftermarket replacement parts is a smart way to restore your vehicle with confidence, thanks to a strong focus on fit, durability, and dependable performance. Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function, helping ensure a smoother installation and reliable results. Built with quality materials and validated through testing, they’re made to stand up to daily driving demands and help reduce the risk of repeat repairs. For a long-lasting fix you can trust, Dorman delivers proven aftermarket solutions that keep your vehicle operating the way it should.

What’s in the Box

• 1 PC

Item Dimensions

• 12.5in x 9.1in x 5.1in, 1.1lbs