Dorman 54234 Engine Coolant Reservoir Cap

Engine Coolant Reservoir Cap for Mazda Protege

This Dorman engine coolant reservoir cap is a direct replacement for a cracked or missing original cap. Built from plastic with a 41 mm diameter, white finish, and snap-on flip-top design, it restores a secure closure for the reservoir on the listed Mazda applications.

Use Dorman Part Number 54234 when you need a straightforward replacement for a damaged coolant reservoir cap on a 1995-2003 Mazda Protege or 2002-2003 Mazda Protege5. This part cross-references B6BF15355A for the same application.

Key Features

• Direct replacement engine coolant reservoir cap
• Plastic construction with a white finish
• 41 mm diameter for the specified reservoir opening
• Snap-on attachment with flip-top style
• Non-vented, non-pressurized design
• Fits Mazda Protege and Mazda Protege5 applications listed below

Detailed Description

Dorman 54234 is engineered as a precise replacement for the original coolant reservoir cap when the factory part is cracked, lost, or no longer seals properly. The cap measures 1.5 in. by 1.5 in. and uses a snap-on attachment for a secure fit on the reservoir. Its flip-top configuration and non-pressurized, non-vented design match the listed application requirements.

Compatible With 1995-2003 Mazda Protege and 2002-2003 Mazda Protege5, this cap supports proper reservoir closure on automatic transmission vehicles where the notes specify washer fluid reservoir cap use. If you are searching for a Mazda Protege coolant reservoir cap, Dorman 54234 provides a direct-fit replacement option for the specified vehicles.

What It Helps Solve

• Broken or cracked coolant reservoir cap
• Missing reservoir cap after service or repair
• Improper closure at the reservoir opening
• Replacement needs for a worn snap-on cap
• Fitment-specific replacement for Mazda Protege and Protege5 listings

Installation Notes and Tips

Confirm the reservoir opening diameter and cap style before installation. This cap uses a snap-on attachment and does not include a pressure release lever, venting, or pressurization. Match the vehicle application carefully, especially on 1995-2003 Mazda Protege and 2002-2003 Mazda Protege5 automatic transmission vehicles noted for washer fluid reservoir cap use.

Quality Assurance

Dorman manufactures direct replacement parts to match original equipment fit and function for the listed application. Part Number 54234 is built to replace the original cap with the specified dimensions and attachment style.