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Dorman 603-861 Pressurized Engine Coolant Reservoir

(Chevrolet Colorado 2023-25, Malibu 2016-25, Equinox 2018-25, Blazer 2019-25; GMC Canyon 2023-25, Acadia 2017-23, Terrain 2018-25 + 12 more models)

Part of: Dorman Pressurized Engine Coolant Reservoir

Other options in this family: Dorman 603844 Dorman 603-008

Manufacturer

Picture for manufacturer Dorman

Part Number

603-861
8 reviews
Sale Price

$37.40

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 603-861 is a direct replacement pressurized engine coolant reservoir designed to restore proper cooling system function in your vehicle. This reservoir tank holds engine coolant and maintains system pressure, allowing for proper circulation and preventing overheating.

Key Features:

  • Direct-fit replacement for original equipment on specific vehicle applications
  • Pressurized design maintains proper cooling system pressure
  • Durable construction designed to withstand engine bay heat and pressure cycling
  • Includes integrated fluid level sensor provisions where applicable
  • Rigorous quality testing ensures reliable performance

This coolant reservoir is engineered to match the fit and function of the original factory part, making installation straightforward. Dorman is a trusted aftermarket manufacturer known for providing cost-effective replacement parts that meet or exceed OE specifications.

Products specifications

Fits

Chevrolet Colorado 2023-25, Malibu 2016-25, Equinox 2018-25, Blazer 2019-25; GMC Canyon 2023-25, Acadia 2017-23, Terrain 2018-25; Mazda Miata 1994-97, 1999-2002, Protege 1990-98, MX-3 1992-95; Buick LaCrosse 2017-19, Envision 2021-25 + 7 more models

Cap Maximum Pressure Rating

20

Level Sensor Included

No

Height

7

Mounting Brackets Included

No

Mounting Hole Quantity

3

Length

7

Mounting Hardware Included

No

Maximum Capacity

15

Pressurized

Yes

Package Contents

1 Reservoir; 1 Cap

Cap Included

Yes

Shape

Spherical

Cap Type

Threaded

Material

Plastic

Capacity

1.5 L

Color

White

Thank you THMSports

Got them so freaking fast it was scary. Will definitely buy from again

Quick Service. Best Price of all.

Just ordered. I can't give it a review until I receive it

just what I was looking for

Great but will the discount code would have worked

Good service

Found what I needed fast!

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