Dorman 603-773 Front Non-Pressurized Coolant Reservoir with Cap for Jeep Wrangler

Direct-fit replacement for Jeep Wrangler cooling system

When a coolant reservoir needs replacing, you want a part that mirrors the original design and supports reliable performance. The Dorman 603-773 Front Non-Pressurized Coolant Reservoir with Cap provides a direct-fit replacement that aligns with the function of the factory component, making installation straightforward for DIY enthusiasts and professional technicians alike.

What makes it a strong choice

• Direct replacement - matches the fit and function of the original part, reducing the guesswork during replacement.
• Ideal solution - engineered for a seamless installation, designed to integrate with existing hoses and mounting points.
• Durable construction - built from quality materials to withstand underhood heat and vehicle vibration over time.
• Trustworthy design - backed by a century of automotive aftermarket experience, offering reliability you can reference when planning maintenance.
• Ensure fit - to confirm compatibility, input your make, model and trim level into the garage tool.

Compatibility details: This reservoir is suitable for Jeep Wrangler JK models (2018) and Jeep Wrangler models from 2012 through 2019. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. If your vehicle uses a non-pressurized reservoir, this Dorman component is designed to replicate the original's mounting and seal points for a smooth fit under the hood.

Every build carries its own heat and vibration, especially in the under-hood environment. The Dorman reservoir is designed to tolerate those conditions, helping maintain coolant containment and reduce the risk of leaks after service. The cap is engineered to seal effectively, supporting consistent cooling system pressure with the non-pressurized design, which some Jeep models use as original equipment.

A practical choice for everyday driving

Whether you're performing routine maintenance in your driveway or prepping for a road trip, this part offers tangible benefits. It arrives ready to install, minimizing downtime and keeping your cooling system in good shape through the seasons. The design also reflects Dorman's long-standing commitment to quality and compatibility across a range of vehicles.