CSF 3817 Radiator

CSF 3817 Radiator Overview

The CSF 3817 radiator is an OE-style cooling replacement built with a plastic tank and aluminum core design for select Chevrolet, Cadillac, and GMC applications. It is engineered as a cross-flow radiator with quick-connect oil cooler fittings and dimensions that match the listed vehicle applications for direct-fit service.

CSF’s radiator line is built to high-performance standards and validated through laboratory wind tunnel testing for cooling performance. The brand manufactures a wide range of radiator models for major vehicle platforms, and this part reflects that OE-style approach for the Chevrolet Blazer, Cadillac XT5, Cadillac XT6, and GMC Acadia.

Key Features

• Part number: 3817
• 1-row radiator with plastic tanks and an aluminum core
• Cross-flow design
• Core thickness: 1 1/4 in.
• Core size: 23 1/2 in. length x 22 3/8 in. width
• Inlet diameter: 1 3/8 in. left
• Outlet diameter: 1 3/8 in. right
• Quick-connect oil cooler fittings with high-efficiency plate-type oil cooler
• Cap not included

Detailed Description

CSF 3817 is a radiator assembly designed around OE-style packaging with plastic end tanks and an aluminum core for consistent cooling performance. The cross-flow layout, 1-row core construction, and integrated oil cooler connections make it a practical replacement for vehicles that require the listed radiator configuration. This part number 3817 is listed for 2022-2026 Chevrolet Blazer, 2022-2025 Cadillac XT5, 2020-2025 Cadillac XT6, and 2020-2023 GMC Acadia, with earlier OE-style applications also shown for 2017-2021 Cadillac XT5, 2019-2021 Chevrolet Blazer, and 2017-2019 GMC Acadia.

This part cross-references BBB Industries 13613 and Spectra Premium CU13613 for the same application.

What This Radiator Helps Address

• Overheating caused by a worn or restricted radiator core
• Coolant leaks from aging plastic tank and core assemblies
• Reduced heat transfer from a damaged or inefficient radiator
• Transmission or engine cooling concerns on vehicles with integrated oil cooler fittings
• Fitment issues when replacing an OE-style cross-flow radiator

Installation Notes and Tips

Verify inlet and outlet orientation before installation: inlet is 1 3/8 in. left and outlet is 1 3/8 in. right. Confirm the vehicle uses the listed oil cooler connection style and compare the radiator dimensions to the original unit before removal. Because the cap is not included, reuse or replace the cap separately as needed based on the vehicle’s specification.

Quality Assurance

CSF manufactures radiators to ISO/TSO-certified factory standards and validates cooling performance through laboratory testing. The brand has supplied radiators worldwide for decades, with broad coverage across many vehicle platforms and OE-style replacement requirements.