Nissens 646935 Radiator

Nissens 646935 Radiator for Lexus ES300h and ES350

Nissens radiator part number 646935 is an aluminum engine cooling radiator built for select Lexus applications. It is listed for Lexus ES300h and Lexus ES350 fitments, including Japan-built ES350 models, with coverage across 2013-2018 model years.

Key Features

• Aluminum radiator construction for efficient heat transfer
• Engine cooling component for select Lexus ES300h and Lexus ES350 applications
• Direct-fit replacement reference for part number 646935
• Cross-references Spectra Premium CU13300 for the same application
• Backed by Nissens Automotive manufacturing focused on thermal and engine efficiency components

Product Details

This Nissens radiator 646935 is part of the brand’s thermal management range, developed for consistent engine cooling performance in aftermarket service. The aluminum core construction supports heat dissipation in daily driving and stop-and-go conditions, making it a practical replacement for aging or damaged cooling systems. It is listed for 2013-2018 Lexus ES300h, 2013-2015 Lexus ES350, and 2016-2018 Lexus ES350 Japan Built Vehicle applications.

Fitment coverage includes Lexus ES300h and Lexus ES350 models, and the part number 646935 is also associated with interchange references such as BBB Industries 13547 and Spectra Premium CU13300. Core dimensions are 30.2362 in. height, 15.7480 in. width, and 0.6299 in. length.

Common Cooling System Issues

• Overheating caused by a leaking or restricted radiator
• Coolant loss from corrosion or physical damage
• Reduced heat exchange from an aging aluminum core
• Temperature instability during city or highway driving
• Cooling system service needs on Lexus ES300h and Lexus ES350 vehicles

Installation Notes and Tips

Verify radiator dimensions, hose connections, and vehicle build details before installation. Confirm whether the vehicle is a Japan-built Lexus ES350 when matching fitment, and inspect related cooling system components such as hoses, clamps, and coolant condition during replacement. Proper system bleeding and refill procedures should be followed after installation to restore normal cooling performance.

Quality Assurance

Nissens develops and manufactures thermal management components with a focus on quality control across its aftermarket range. This radiator is part of that product line and is built to support dependable engine cooling in the listed Lexus applications.