CSF 3674 Radiator

OE-Style Cooling for Honda Accord Hybrid

Restore cooling performance with this CSF radiator, part number 3674, built in an OE-style layout for select Honda Accord Hybrid applications. It uses a 1-row aluminum core with plastic tanks and a down-flow design to match the factory-style configuration.

Compatible with 2014-2015 Honda Accord and 2017 Honda Accord, this radiator is engineered for direct-fit replacement needs where the original unit has developed leaks, restricted flow, or reduced heat transfer. CSF manufactures radiators to controlled production standards and validates cooling performance in laboratory testing.

Key Features

• CSF 3674 radiator for select Honda Accord Hybrid applications
• OE-style plastic tanks with aluminum core construction
• 1-row core design with 5/8 in. core thickness
• Down-flow radiator layout
• Inlet and outlet diameter: 1 1/4 in. left
• Cap not included
• Cross-reference: Bosch 13418

Product Details

This CSF radiator is built around a 29 11/16 in. core width and 15 13/16 in. core length, with an aluminum core and plastic tank construction that follows the original equipment style. The design is intended for Honda Accord Hybrid cooling system service where a direct replacement radiator is needed to maintain proper coolant circulation and heat rejection. Part number 3674 is also referenced against Bosch 13418 for the same application.

CSF’s product line includes a broad range of radiator applications for major vehicle platforms, with manufacturing experience spanning decades and a large catalog of OE-style cooling components. For Honda Accord owners, this radiator provides a factory-type fitment approach without changing the original cooling system layout.

Common Problems This Radiator Can Address

• Coolant leaks from a damaged or aging radiator tank
• Overheating caused by restricted coolant flow
• Reduced cooling efficiency from a worn core
• Corrosion or cracking in the original radiator assembly
• Replacement needs after collision or front-end damage

Installation Notes and Tips

Verify inlet and outlet orientation before installation, since this unit uses left-side inlet and outlet connections. Confirm radiator dimensions and mounting points against the original part before removal. Inspect hoses, clamps, and coolant condition during service to help prevent repeat cooling-system issues. Always refill and bleed the system according to Honda service procedures after installation.

Quality Assurance

CSF radiators are manufactured to controlled standards and tested for cooling performance validation. The brand states that its factories are ISO/TSO certified and that its radiators are engineered for OE-style fitment and performance consistency.