Dorman 603-382 Front Pressurized Coolant Reservoir Compatible

In this review the Dorman 603-382 front pressurized coolant reservoir is evaluated as a direct replacement for select Ford models. It is aimed at drivers and DIY mechanics who need a straightforward, OEM-fit replacement tank and want an option that installs without modification. The single biggest reason to buy is its engineered fit and durable construction, which mirrors the original part so most installers can swap it in without special tools. The review finds it generally reliable, with the cap included and clear fitment guidance via the garage tool.

Key Features

• Direct replacement: Matches the fit and function of the original reservoir so it bolts in and connects to existing hoses like the factory unit.
• Ideal solution for installation: Engineered for a seamless installation to reduce time in the garage and lower the likelihood of fitment issues.
• Durable construction: Manufactured from quality materials designed to resist underhood heat and engine vibration that commonly cause premature failure.
• Trustworthy design: Backed by a century of aftermarket experience, providing confidence that the part follows known engineering practices for reservoirs.
• Fitment confirmation: The product listing advises using the garage tool to ensure the reservoir matches the exact make, model and trim before purchase.

Who It's For

The Dorman 603-382 reservoir is best for Ford owners with compatible models such as the C-Max, Escape, Focus and Transit Connect who prefer a ready-to-install replacement rather than repairing the original tank. It fits owners who prioritize an OEM-style fit, a supplied cap, and a product built to handle heat and vibration.

It is less suited for someone who needs a universal or modified reservoir for non-standard installations, or for buyers who require a lifetime crackproof guarantee; some users reported mixed durability experiences and occasional leakage, so owners seeking absolute long-term certainty may prefer a dealer part instead.

Pros & Cons

Pros

• Good fit and function that often requires no special tools to install.
• Includes the cap, removing the need to source a separate component.
• Constructed to withstand underhood heat and vibration, which improves longevity in typical use.

Cons

• Durability reports are mixed; a minority of customers experienced leakage, so occasional failure is possible.

Specifications

Brand	Dorman
Part number	603-382
Application	Front pressurized engine coolant reservoir with cap
Compatible vehicles	Ford C-Max, Escape, Focus, Transit Connect (model years vary)
Fit type	Direct replacement; engineered to match original fit and function
Construction	Manufactured from quality materials to resist heat and vibration
Fitment check	Use garage tool to enter make, model and trim

Our Verdict

The Dorman 603-382 is a practical OEM-style replacement that will suit most owners of compatible Ford models who want a straightforward swap and the convenience of a supplied cap. It represents reasonable value for DIYers and independent shops; however, buyers should verify fitment with the garage tool and accept that a small number of users have reported leakage, so keep an eye on long-term durability.

Frequently Asked Questions

Does this reservoir include the cap?
Yes, the Dorman 603-382 comes with the cap included so no separate cap purchase is required.

Will it fit my Ford?
It is compatible with select Ford C-Max, Escape, Focus and Transit Connect model years listed; enter your make, model and trim in the garage tool to confirm exact fitment.

Is this a direct replacement?
Yes, it is engineered to match the fit and function of the original factory reservoir for a direct replacement installation.