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Dorman 603-963 Non-Pressurized Coolant Reservoir Tank

(2014-2017 Mazda 3; 2013-2017 Mazda CX-5; 2014-2015, 2017 Mazda 6; 2014, 2017 Mazda 3 Sport; 1984-1989 Porsche 911 Carrera; 1989 Porsche 911 Speedster)

Part of: Dorman Non-Pressurized Coolant Reservoir Tank

Other options in this family: Dorman 603-305 Dorman 603-033 Dorman 603-327 Dorman 603-387 Dorman 603-780

Manufacturer

Picture for manufacturer Dorman

Part Number

603-963
5 reviews
Sale Price

$20.44

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Dorman 603-963 is a direct-replacement non-pressurized coolant reservoir designed to restore proper cooling system function in your vehicle. This overflow tank collects excess coolant as it expands during engine operation and returns it to the radiator as the system cools down, maintaining optimal coolant levels and preventing overheating.

Key Features:

  • Non-pressurized design for overflow coolant recovery systems
  • Durable construction engineered to withstand engine heat and coolant exposure
  • Direct-fit replacement for original equipment on specific applications
  • Includes necessary mounting provisions for straightforward installation
  • Helps maintain proper coolant circulation and prevent air pockets in the cooling system

This replacement reservoir is manufactured to meet or exceed OEM specifications, providing reliable performance and a proper fit. Installing a new coolant reservoir tank can eliminate issues caused by cracked, warped, or leaking original equipment that has deteriorated over time.

Products specifications

Fits

2014-2017 Mazda 3; 2013-2017 Mazda CX-5; 2014-2015, 2017 Mazda 6; 2014, 2017 Mazda 3 Sport; 1984-1989 Porsche 911 Carrera; 1989 Porsche 911 Speedster

Cap Included

Yes

Capacity

850 ML

Material

Plastic

Mounting Hole Quantity

2

Cap Type

Flip Top

Mounting Hardware Included

No

Package Contents

1 Engine Coolant Reservoir; 1 Cap; 1 Tube

Mounting Brackets Included

Yes

Color

Black

Shape

Irregular

Pressurized

No

Length

9.235

Level Sensor Included

No

Height

7.42

great ! except i signed up for 20% discount and wasn't applied. that sucks.

It came fast but it wasn't the right part, but that was my fault for not doing more research.

Website is user friendly and easy to navigate.

Have ordered a few things off Amazon & have a good experience every time. Thank you. Again good experience.

Cheap&easy

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