Description
Product overview
The CSF 3781 is an application-specific replacement radiator. Its construction pairs a aluminum core with plastic tanks. Application: 2016-2020 Honda Civic 1.5L Turbo.
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 1/4 Right
- Core Length (in): 26 9/16
- Core Material: Aluminum
- Core Thickness (in): 1 1/4
- Core Width (in): 17 11/16
- Flow orientation: Cross Flow
- Core rows: 1
- Radiator Cap Supplied: No
- Tank Material: Plastic
- Tech Note: O.E.M. Style Radiator
- Top Hose Fitting (in): 1 1/4 Left
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
| Make | Model | Qualifiers | Year |
|---|---|---|---|
| Honda | Civic | 2.0L L4 1996cc 122ci Hatchback | 2017-2021 |
| Honda | Civic | 1.5L L4 1497cc Turbocharged | 2016-2021 |
| Honda | Civic | 1.5L L4 1500cc 92ci Turbocharged | 2016 |
Part number: CSF 3781.