CSF 3919 Radiator

Brand CSF 3919
Core Thickness 5/8
Core Width 14 5/8
Core Material Aluminum
Tank Material Plastic
Core Length 23 9/16
Inlet Diameter 1 3/8 left
Outlet Diameter 1 3/8 right
Down Flow Or Cross Flow Type Cross flow
Radiator Core Row Quantity 1
Cap Included No
Box Height (in) 4 1/2
Box Length (in) 31 5/8
Box Weight (lbs) 7
Box Width (in) 18 1/4
Hazardous Material No
Inlet Length (in) 15 7/16
Inlet Width (in) 1 5/16
Oil Cooler (in) No
Outlet Length (in) 15 7/16
Outlet Width (in) 1 5/16
Tech Note O.e.m. style plastic tank & aluminum core.
Fits Scion and Toyota · 3 vehicles

OEM-style design. Plastic tank and aluminum core construction matches the original layout.

Cross-flow radiator. Engineered for efficient cooling performance.

Wind tunnel tested. Validated in the lab for cooling performance.

Cross-references Bosch 13552, 16400-22160 and SC3010110 for the same application. See all 3.

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OE-Style Radiator for Corolla iM and Scion iM

Restore cooling system performance with the CSF 3919 radiator, built as an OE-style replacement with a plastic tank and aluminum core. It is engineered for direct-fit service on select Toyota Corolla iM and Scion iM applications, with cross-flow construction and factory-style inlet and outlet placement.

CSF has manufactured radiators for decades, with production backed by ISO/TSO-certified facilities and validation testing focused on cooling performance. The 3919 radiator reflects that approach with a design intended to match original equipment dimensions and cooling layout.

Key Features

  • OE-style plastic tank and aluminum core construction
  • Cross-flow radiator design
  • Single-row core configuration
  • Core thickness: 5/8 in.
  • Core dimensions: 23 9/16 in. length x 14 5/8 in. width
  • Inlet diameter: 1 3/8 in., left side
  • Outlet diameter: 1 3/8 in., right side
  • No radiator cap included
  • Part number: CSF 3919

Detailed Description

The CSF 3919 radiator is designed for 2017-2018 Toyota Corolla iM and 2016 Scion iM applications, with OE-style fitment and cooling-system geometry that follows the original layout. The aluminum core helps transfer heat efficiently, while the plastic tank design mirrors the factory configuration for straightforward replacement service. This radiator is a practical choice for drivers replacing a leaking, clogged, or damaged original unit on a Corolla iM or Scion iM.

This part cross-references Bosch 13552 for the same application.

What It Helps Address

  • Coolant leaks from a cracked or aging radiator tank
  • Restricted coolant flow from internal corrosion or buildup
  • Overheating caused by reduced heat dissipation
  • Physical damage to the radiator core or end tanks
  • Temperature instability from a failing OE radiator

Installation Notes and Tips

Verify inlet and outlet orientation before installation: the inlet is on the left and the outlet is on the right. Confirm core dimensions and mounting points against the original radiator before removal. Transfer any required vehicle-specific components from the original assembly as needed, and inspect hoses, clamps, and coolant condition during replacement. This radiator does not include a cap.

Quality Assurance

CSF manufactures radiators in ISO/TSO-certified facilities and validates cooling performance through engineering and testing processes. The brand supplies a wide range of radiator applications for major vehicle platforms worldwide, including OE-style replacement designs like the CSF 3919.

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2018ToyotaCorolla iM1.8LL4N/AOE style design ensures optimal fitment and performance.
2017ToyotaCorolla iM1.8LL4N/AOE style design ensures optimal fitment and performance.
2016ScioniM1.8LL4N/AOE style design ensures optimal fitment and performance.
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 1355216400-22160SC3010110