Dorman 902-5202CD Engine Coolant Reservoir Cap

Engine Coolant Reservoir Cap Replacement

Replace a cracked or missing coolant reservoir cap with a direct-fit Dorman solution built for pressurized cooling systems. The Dorman 902-5202CD engine coolant reservoir cap uses a metal, twist-on design to restore proper sealing at the coolant tank and help maintain system pressure.

For drivers searching for an engine coolant reservoir cap for Honda Civic or Toyota Corolla cooling system service, this replacement cap provides a straightforward OE-style fix. The Dorman 902-5202CD is engineered as a direct replacement for the original cap and is sized for a 68.58 mm opening with a 20 psi pressure rating.

Key Features

• Direct replacement engine coolant reservoir cap for pressurized coolant tanks
• Metal construction with a natural finish
• Twist-on attachment type for secure installation
• 68.58 mm diameter for proper reservoir neck fit
• 20 psi maximum pressure rating
• Non-vented design with no pressure release lever
• Compatible with applications that use Dorman 902-5202CD

Detailed Product Information

This coolant tank cap is intended to replace an original cap that is cracked, lost, or no longer sealing correctly. The pressurized, twist-style design helps maintain the cooling system’s operating pressure, which is important for stable coolant performance in everyday driving and service conditions. The Dorman 902-5202CD also cross-references Monroe Shocks & Struts 172286 and 182286 for the same application.

Vehicle owners and technicians looking for a coolant reservoir cap replacement for Honda Civic or Toyota Corolla service can use this part when the reservoir neck and pressure specification match the listed dimensions. The Dorman 902-5202CD part number is also useful when matching an OE-style replacement during cooling system maintenance.

What This Part Helps Solve

• Coolant loss caused by a cap that no longer seals
• Pressure loss in the coolant reservoir
• Cracked, damaged, or missing reservoir cap issues
• Cooling system warning concerns related to cap failure
• Service replacement needs for a pressurized coolant tank cap

Installation Notes and Tips

Confirm the reservoir neck diameter, pressure rating, and twist-on style before installation. Inspect the sealing surface on the coolant tank for cracks, debris, or deformation, and make sure the cap seats fully before returning the vehicle to service. This part is a direct replacement for applications that call for Dorman 902-5202CD.

Quality Assurance

Dorman manufactures replacement parts to match original equipment fit and function requirements for service repair use. The 902-5202CD is built as a direct replacement coolant reservoir cap for pressurized cooling system applications.