Dorman 54253 Engine Coolant Reservoir Cap

Engine Coolant Reservoir Cap for Toyota 4Runner

This Dorman engine coolant reservoir cap is a direct replacement for the original cap on select Toyota 4Runner models. It is built with a snap-on attachment and flip-top design to match the factory-style fit and function for 1996-2002 Toyota 4Runner applications.

• Direct replacement coolant reservoir cap for select Toyota 4Runner models
• Black plastic construction
• 38 mm diameter
• Snap-on attachment with flip-top design
• Non-pressurized, non-vented design
• Compact 2 in. length and 2 in. width
• Part number 54253 for easy identification

Product Details

Dorman 54253 is engineered to replace a cracked, missing, or worn engine coolant reservoir cap without changing the original reservoir setup. The black plastic cap uses a snap-on attachment and flip-top style, and its 38 mm diameter supports a precise fit on the specified Toyota 4Runner cooling system application. This replacement is intended for 1996-2002 Toyota 4Runner models and is a practical option when the original cap no longer seals or stays secured properly. This part number 54253 also cross-references 1640575020 for the same application.

Common Problems This Part Can Address

• Broken or cracked coolant reservoir cap
• Lost original reservoir cap
• Cap that no longer snaps on securely
• Cooling system contamination from an uncovered reservoir
• Improper reservoir closure on a 1996-2002 Toyota 4Runner

Installation Notes and Tips

Verify the reservoir opening diameter and attachment style before installation. Confirm the cap seats fully on the reservoir neck and closes securely after installation. For best results, inspect the reservoir and surrounding cooling system components for damage, residue, or wear before replacing the cap.

Quality Assurance

Dorman manufactures this coolant reservoir cap as a direct replacement part for the listed Toyota 4Runner applications. Its OE-style dimensions and attachment design support a factory-like replacement for the original cap.