CSF 3827 Radiator

CSF 3827 Radiator Overview

The CSF 3827 radiator is a direct-fit cooling replacement for select Lexus RX350 and RX350L applications. Built with a 1 row plastic tank aluminum core design, it supports efficient heat transfer while matching the vehicle-specific fitment needed for routine radiator replacement.

This CSF radiator line focuses on OE-style fitment with a practical core construction for everyday cooling system service. For 2021-2022 Lexus RX350 and RX350L models, it features an upgraded heavy duty core that is 11% thicker at 30mm versus the OEM 27mm specification.

Key Features

• CSF part number 3827
• 1 row plastic tank aluminum core construction
• Upgraded heavy duty core on 2021-2022 Lexus RX350 and RX350L applications
• Core thickness listed at 30mm versus OEM 27mm on upgraded applications
• Fits 2016-2020 Lexus RX350 without external transmission oil cooler
• Fits 2018-2020 Lexus RX350L without external transmission oil cooler
• Includes CSF cap number 4514

Detailed Description

CSF 3827 is a radiator replacement for Lexus RX350 and Lexus RX350L models across the 2016-2022 model years listed in the fitment data. The 1 row plastic tank aluminum core layout is used to balance cooling performance and OE-style packaging, while the upgraded heavy duty core specification on 2021-2022 vehicles adds thickness for the listed application. This part number, CSF 3827, is a focused solution for drivers replacing a worn or leaking radiator on the RX platform.

This part cross-references BBB Industries 13602 for the same application.

What It Is Used For

• Replacing a leaking or cracked radiator on Lexus RX350 and RX350L models
• Restoring coolant circulation after radiator core damage or tank failure
• Addressing overheating caused by restricted or inefficient radiator flow
• Servicing vehicles that require a radiator without an external transmission oil cooler
• Upgrading to the listed heavy duty core on 2021-2022 RX350 and RX350L applications

Installation Notes and Tips

Verify vehicle configuration before ordering. Fits 2016-2020 Lexus RX350 without external transmission oil cooler and fits 2018-2020 Lexus RX350L without external transmission oil cooler. For 2021-2022 Lexus RX350 and RX350L, confirm the upgraded heavy duty core application. Always compare the existing radiator, cap specification, and cooler routing to the vehicle before installation.

Quality Assurance

CSF is an established cooling system brand, and this radiator is built to match the listed vehicle applications with the specified core design and cap number. The CSF 3827 radiator is identified with CSF cap number 4514 for application matching.