Dorman 924-1058 Engine Coolant Reservoir Cap

Engine Coolant Reservoir Cap Replacement

Restore the cooling system seal with this Dorman engine coolant reservoir cap, part number 924-1058. It is a direct replacement for a cracked, missing, or worn coolant tank cap and is built with a threaded-on twist design for a secure fit on the reservoir.

Made from black plastic and rubber, this cap measures 2.5 in. in diameter and is shaped to match the original style for a clean OE-style replacement. It is non-vented, non-pressurized, and does not use a pressure release lever.

Key Features

• Direct replacement engine coolant reservoir cap
• Threaded-on twist design for secure attachment
• Black plastic and rubber construction
• 2.5 in. diameter for OE-style fitment
• Non-vented and non-pressurized design
• Part number 924-1058 for easy identification

Detailed Product Information

Dorman 924-1058 is engineered as a straightforward replacement for the original coolant reservoir cap when the factory cap is cracked, lost, or no longer sealing properly. The cap’s threaded-on twist attachment helps it install in the same manner as the original component, while the plastic and rubber construction supports a dependable seal at the reservoir opening. This part is a practical choice for drivers searching for an engine coolant reservoir cap for Honda Civic, Toyota Corolla, or similar OE-style cooling system service where the original cap design matches this application.

This part cross-references OE number 25133601 for the same application.

What It Helps Solve

• Coolant reservoir cap missing after service or repair
• Cracked cap housing that no longer seals correctly
• Worn twist-on cap that does not thread on securely
• Loss of the original coolant tank cap during maintenance
• Cooling system service needs on vehicles using this cap style

Installation Notes and Tips

Before installation, confirm the reservoir neck style, diameter, and attachment type match the original cap. Clean the reservoir sealing surface and inspect the tank opening for damage, debris, or hardened residue that could affect the seal. Install by threading the cap on until it seats fully, and verify that the cap matches the vehicle’s original non-vented, non-pressurized design.

Fits 2006-2011 Honda Civic, compatible with the original coolant reservoir cap design. Fits 2006-2011 Toyota Corolla, compatible with the original coolant reservoir cap design.

Quality Assurance

Dorman manufactures replacement parts to match original equipment form and function where specified. Part number 924-1058 is built as a direct-fit coolant reservoir cap replacement for service work that requires the same style and dimensions as the original component.