CSF 3773 Radiator

CSF 3773 Radiator for Toyota Highlander Hybrid

The CSF 3773 is an OE-style radiator built for 2014-2019 Toyota Highlander Hybrid applications. It combines an aluminum core with plastic tanks to match the factory-style layout while supporting dependable engine cooling in daily driving.

• Fits 2014-2019 Toyota Highlander Hybrid applications
• CSF part number 3773
• Aluminum core with plastic tanks
• Down-flow radiator design
• Single-row core construction
• Oil cooler: 14 3/4 in. high-efficiency plate type
• Inlet and outlet diameter: 1 5/16 in.
• OE-style plastic tank and aluminum core construction

Built to Match Factory Cooling Layout

CSF designs radiators to high-performance standards and validates cooling performance in laboratory wind-tunnel testing. Part number 3773 is engineered with a 29 11/16 in. core width, 20 5/8 in. core length, and 5/8 in. core thickness, giving it the dimensions needed for the specified Toyota Highlander Hybrid fitment. The radiator uses a down-flow configuration with left-side inlet and right-side outlet placement, and it includes a high-efficiency plate-type oil cooler.

This part cross-references Bosch 13450 for the same application.

Common Problems This Radiator Addresses

• Overheating caused by a leaking or restricted radiator
• Coolant loss from cracked plastic tanks or aged seals
• Reduced heat transfer from a clogged or corroded core
• Transmission or engine cooling concerns tied to radiator wear
• Factory-style replacement needs for a Toyota Highlander Hybrid radiator

Installation Notes and Tips

Verify inlet and outlet orientation before installation, since this radiator uses a left inlet and right outlet layout. Confirm the vehicle is a 2014-2019 Toyota Highlander Hybrid and compare core dimensions, hose connections, and oil cooler routing to the original unit before removal. The radiator cap is not included; CSF cap number 4514 is listed separately.

Quality Assurance

CSF manufactures radiators in ISO/TSO-certified facilities and supplies a broad range of cooling products for global vehicle applications. The brand has produced and sold radiators worldwide for more than 50 years, with engineering focused on validated cooling performance and OE-style construction.