Dorman - HELP Engine Coolant Reservoir Cap for 1998-2005 Lexus GS300/GS400 54231

Engine Coolant Reservoir Cap for 1998-2005 Lexus GS300/GS400 replaces cracked or lost original cap.

Built to meet the manufacturer’s design intent for reliable service.

Key Features

• Direct replacement for original engine coolant reservoir cap
• Fits Lexus GS300 (1998-2005) and GS400 (1998-2000)
• Part number 54231
• Dimensions 3.1in x 4.5in x 0.1in, weight 0.1lbs

Benefits

• Quick and easy replacement saves time compared to dealership service
• Reduces repair costs by providing a cost-effective solution
• Ensures proper coolant system sealing for engine protection
• Maintains optimal cooling performance for reliable vehicle operation

Application

This part is ideal for owners of Lexus GS300 and GS400 models who need to replace a cracked or missing coolant reservoir cap to maintain engine health.

Fitment Notes

• Fits Lexus GS300 (1998-2005) and GS400 (1998-2000)

Why Choose Dorman - HELP?

• Choosing Dorman aftermarket replacement parts is a smart way to restore your vehicle with confidence, thanks to a strong focus on fit, durability, and dependable performance. Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function, helping ensure a smoother installation and reliable results. Built with quality materials and validated through testing, they’re made to stand up to daily driving demands and help reduce the risk of repeat repairs. For a long-lasting fix you can trust, Dorman delivers proven aftermarket solutions that keep your vehicle operating the way it should.

What’s in the Box

• 1 PC

Item Dimensions

• 3.1in x 4.5in x 0.1in, 0.1lbs