CSF 3862 Radiator

OE-Style Cooling Replacement for Highlander

The CSF 3862 radiator is built for 2017-2019 Toyota Highlander non-hybrid applications with an OE-style plastic tank and aluminum core design. It is engineered for direct-fit cooling system service where the original radiator has developed leaks, restricted flow, or reduced heat transfer.

With a 1-row down-flow layout, 1 1/4-inch core thickness, and left-side inlet/right-side outlet configuration, this radiator matches the factory-style cooling path used on the Toyota Highlander. CSF designs and validates its radiators for cooling performance, with manufacturing backed by ISO/TSO-certified factories and long-running global production experience.

Key Features

• Part number: CSF 3862
• Fits 2017-2019 Toyota Highlander, non-hybrid
• 1-row down-flow radiator design
• Aluminum core with plastic tanks
• Core thickness: 1 1/4 inches
• Inlet diameter: 1 5/16 left
• Outlet diameter: 1 5/16 right
• OE-style plastic tank and aluminum core construction

Detailed Description

CSF 3862 is a replacement radiator for the Toyota Highlander platform, built around the factory-style plastic tank and aluminum core layout. The core measures 29 11/16 inches wide by 20 5/8 inches long, with a 1-row down-flow configuration that supports the original cooling system design. This makes it a practical choice for restoring proper coolant circulation and heat rejection in 2017-2019 Toyota Highlander non-hybrid models.

CSF manufactures a wide range of radiator applications and validates designs through lab testing for cooling performance. The brand’s OE-style construction and broad vehicle coverage make the CSF 3862 a direct replacement option for Highlander owners looking for a radiator that matches the original fitment and hose routing. This part cross-references Spectra Premium CU13657 and BBB Industries 13657 for the same application.

What This Radiator Helps Address

• Coolant leaks from aging radiator tanks or seams
• Overheating caused by restricted coolant flow
• Reduced cooling efficiency from a damaged core
• Cracked or brittle plastic tank failure
• Factory radiator replacement after corrosion or impact damage

Installation Notes and Tips

Verify the vehicle is a 2017-2019 Toyota Highlander non-hybrid before ordering. Confirm hose routing, inlet and outlet orientation, and available space against the OE radiator layout. The radiator does not include a cap, and the listed cap number is CSF 4514 if a matching cap is needed separately. Inspect hoses, clamps, and coolant condition during replacement to help complete the cooling system service properly.

Quality Assurance

CSF radiators are produced in ISO/TSO-certified factories and engineered to meet high-performance standards. The brand also uses wind tunnel testing and laboratory validation to confirm cooling performance across its radiator lineup.