One Stop Solutions 13338 Radiator

Radiator for Lexus ES350

Replace a worn or leaking cooling unit with this OSC Premium New Automotive Radiator, part number 13338. It is built for the 2013-2018 Lexus ES350 and follows OE-style form and function for a direct-fit cooling system repair.

Key Features

• Fits 2013-2018 Lexus ES350, N/A
• Premium-grade aluminum construction with plastic tanks
• Downflow design with a 1-row core
• Core dimensions: 15 3/4 in. height, 30 1/8 in. width, 5/8 in. thickness
• Inlet and outlet diameters measure 1 3/8 in.
• No engine oil cooler, transmission oil cooler, or cap included
• Factory-style fitment with OE performance and component placement
• Part number 13338 cross-references Koyorad A13338 for the same application

Detailed Description

OSC part number 13338 is engineered as an OE-style replacement radiator for the Lexus ES350. The design uses premium aluminum tubes and a plastic tank layout, with cadmium-plated tubes inside and out to help resist premature failure. The radiator is individually pressure tested and built with a die-cut gasket to help maintain a leak-resistant seal. For vehicles such as the 2013-2018 Lexus ES350, this radiator supports a direct replacement approach that matches factory cooling system layout and fit.

Measured specifications include a 15 3/4-inch core height, 30 1/8-inch core width, 5/8-inch core thickness, and 1 3/8-inch inlet and outlet diameters. The downflow configuration and single-row core are suited to OE-style cooling system service where the original radiator uses this layout. Part number 13338 is also referenced by 8013338, 1640031850, CU13338, and Koyorad A13338.

Common Problems This Radiator Can Address

• Coolant leaks from a cracked or aging radiator tank
• Restricted cooling performance from a clogged or damaged core
• Overheating caused by reduced heat transfer efficiency
• Fitment issues from a radiator that no longer matches factory dimensions
• Cooling system service needs on a high-mileage Lexus ES350

Installation Notes and Tips

Confirm the vehicle is a 2013-2018 Lexus ES350 before installation and compare inlet, outlet, and core dimensions to the original radiator. Inspect hoses, clamps, and surrounding cooling system components for wear before reassembly. Because this unit does not include a cap, engine oil cooler, or transmission oil cooler, reuse or replace those components as needed based on the vehicle’s original setup.

Quality Assurance

OSC states that each radiator is tested during production, including cooler testing before tank installation, core testing before assembly, and a final test after assembly. The design also incorporates engineering updates aimed at improving durability and cooling performance in demanding service conditions.