CSF 3787 Radiator

CSF 3787 Radiator for Hyundai Tucson

The CSF 3787 is an OE-style replacement radiator built with an aluminum core and plastic tanks for the Hyundai Tucson. It is engineered for direct-fit cooling performance and is listed for 2016-2018 Hyundai Tucson, plus 2019 and 2021 Hyundai Tucson applications with an upgraded heavy-duty core specification.

Key Features

• Aluminum core with plastic tanks in an OEM-style design
• Cross-flow radiator layout
• Single-row core construction
• Core thickness: 1 1/4 in.
• Inlet: 1 3/8 in. right side
• Outlet: 1 3/8 in. left side
• Cap not included
• Built by CSF, a radiator manufacturer with ISO/TSO-certified factories

Detailed Description

CSF part number 3787 is a replacement radiator for Hyundai Tucson models that need an OE-style cooling system component with the correct fitment and hose connections. The aluminum core helps transfer heat efficiently, while the plastic tank construction follows the original equipment style used on many factory cooling systems. This radiator is a cross-flow design with a 1-row core and measured core dimensions of 19 1/8 in. length, 18 5/16 in. width, and 1 1/4 in. thickness. CSF states its radiators are engineered and wind-tunnel tested for cooling validation, and the company supplies a wide range of radiator applications across the automotive market. This part cross-references Bosch 13577 and Spectra Premium CU13577 for the same application.

Vehicle Fitment

• Fits 2021 Hyundai Tucson, N/A. Upgraded Heavy Duty Core. 15% Thicker 30mm vs OEM 26mm
• Fits 2019 Hyundai Tucson, N/A. Upgraded Heavy Duty Core. 15% Thicker 30mm vs OEM 26mm
• Fits 2016-2018 Hyundai Tucson, N/A

Common Cooling System Issues

• Cracked or leaking radiator tanks
• Restricted coolant flow from an aging core
• Overheating caused by reduced heat dissipation
• Corrosion or internal wear in the original radiator
• Cooling system service needs on a Hyundai Tucson radiator replacement

Installation Notes and Tips

Verify hose orientation before installation: inlet is on the right and outlet is on the left. Confirm the radiator dimensions and mounting points against the original unit before assembly. Transfer any required sensors or fittings from the OE radiator if your vehicle uses them, and inspect hoses, clamps, and coolant condition during replacement. This CSF 3787 radiator is an OE-style replacement for Hyundai Tucson cooling system service.

Quality Assurance

CSF manufactures radiators in ISO/TSO-certified facilities and validates cooling performance through laboratory testing. The brand has supplied radiators worldwide for more than 50 years and offers a broad catalog of applications for leading vehicle platforms.