Dorman 54247 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 Subaru cooling system service. Dorman 54247 is a yellow, snap-on flip-top cap made from plastic and sized for a 40 mm reservoir opening.

• Direct replacement engine coolant reservoir cap for select Subaru applications
• Plastic construction with yellow finish
• Snap-on attachment with flip-top design
• 40 mm diameter for proper reservoir fitment
• Non-pressurized, non-vented design
• Low-profile 2 in. length and 2 in. width

Detailed Product Overview

Dorman 54247 is engineered as a direct replacement for the original engine coolant reservoir cap when the factory cap is cracked, damaged, or lost. It is designed for Subaru cooling system service and matches the specified 40 mm opening with a snap-on, flip-top configuration. This cap is a practical replacement for Subaru BRZ, Crosstrek, Forester, WRX, WRX STI, Impreza, XV Crosstrek, Tribeca, B9 Tribeca, Baja, Legacy, and Outback applications listed in the fitment data. This part cross-references Subaru 45153AA001 for the same application.

What It Helps Solve

• Broken or cracked coolant reservoir cap
• Missing reservoir cap after service or inspection
• Loose cap that no longer seats securely
• Cooling system contamination from an uncovered reservoir
• Incorrect cap fit on Subaru coolant reservoir openings

Installation Notes and Tips

Verify the reservoir opening diameter before installation and confirm the cap style matches the original 40 mm snap-on flip-top design. Inspect the reservoir neck and sealing surface for damage before installing the replacement cap. Compatible with select Subaru BRZ, Crosstrek, Forester, WRX, WRX STI, Impreza, XV Crosstrek, Tribeca, B9 Tribeca, Baja, Legacy, and Outback models across the listed years.

Quality Assurance

Dorman manufactures this coolant reservoir cap as a direct replacement part for the specified Subaru applications. Part number 54247 is built to match the original cap style and fitment requirements for the listed vehicles.