CSF OEM Plastic Radiator - 2003-2004 Toyota 4Runner 4.0L

Product overview

The CSF 3697 is an application-specific replacement radiator. Its construction pairs a aluminum core with plastic tanks. Application: 2003-2004 Toyota 4Runner 4.0L.

The radiator transfers heat from circulating engine coolant to the air passing through its core. Tube and fin condition, fan operation, and the airflow path all affect the cooling system’s ability to reject heat.

Technical specifications

• Bottom Hose Fitting (in): 1 5/16 Left
• Core Length (in): 25 9/16
• Core Material: Aluminum
• Core Thickness (in): 7/8
• Core Width (in): 23 1/4
• Flow orientation: Cross Flow
• Matching CSF cap number: 4514
• Core rows: 1
• Oil Cooler (in): 9 13/16 (high-efficiency Plate Type)
• Radiator Cap Supplied: No
• Tank Material: Plastic
• Tech Note: O.E.M. Style Radiator
• Top Hose Fitting (in): 1 5/16 Right

Installation and compatibility

Compare the core dimensions, hose locations, mounting arrangement, and any internal cooler connections with the existing radiator. Select by the complete vehicle, engine, and transmission configuration; shared model names alone do not establish fitment. Follow the vehicle coolant filling and bleeding procedure after replacement.

Vehicle fitment

Part number: CSF 3697.