CSF 3923 Radiator
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CSF

CSF 3923 Radiator

Brand CSF 3923
Core Thickness 5/8
Core Width 16
Core Material Aluminum
Tank Material Plastic
Core Length 23 15/16
Inlet Diameter 1 5/16 left
Outlet Diameter 1 5/16 right
Down Flow Or Cross Flow Type Cross flow
Radiator Core Row Quantity 1
Cap Included No
Box Height (in) 5 1/2
Box Length (in) 33 3/16
Box Weight (lbs) 8
Box Width (in) 20
Hazardous Material No
Inlet Length (in) 16 5/8
Inlet Width (in) 1 3/8
Oil Cooler (in) 10 13/16 (high-effeciency plate type)
Outlet Length (in) 16 5/8
Outlet Width (in) 1 3/8
Tech Note O.e.m. style plastic tank & aluminum core.
Fits Hyundai and Kia · 14 vehicles

OE-style construction. Plastic tanks and an aluminum core match the original design.

Cross-flow design. Promotes efficient coolant flow through the radiator.

Integrated oil cooler. High-efficiency plate type adds extra cooling capacity.

Cross-references BBB Industries 13796, Bosch 13862 and Partslink Numbering System HY3010228 for the same application. See all 6.

$140.64Free shipping
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Order total $140.64
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Free returns within 60 days if it doesn't fit when fitment is verified.
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OE-Style Radiator for Kia and Hyundai

CSF 3923 is an OE-style radiator built with an aluminum core and plastic tanks for direct replacement service. It is engineered for cross-flow cooling and listed for select Kia Seltos, Kia Soul, and Hyundai Veloster applications with fitment-specific notes for upgraded heavy-duty core coverage on certain models.

Key Features

  • Aluminum core with plastic tank construction
  • Cross-flow radiator design
  • Single-row core configuration
  • Core thickness: 5/8 in.
  • Core dimensions: 23 15/16 in. length and 16 in. width
  • Inlet diameter: 1 5/16 in., left side
  • Outlet diameter: 1 5/16 in., right side
  • Integrated high-efficiency plate-type oil cooler, 10 13/16 in.
  • OE-style plastic tank and aluminum core layout

Detailed Description

CSF 3923 is a replacement radiator for cooling-system service on select Kia and Hyundai vehicles. The radiator uses an aluminum core with plastic tanks in an OE-style layout, along with a cross-flow design and single-row core construction. Its dimensions, inlet and outlet placement, and built-in plate-type oil cooler are specified for applications that require a direct-fit cooling component. This part number is listed for 2022-2025 Kia Seltos, 2022-2025 Kia Soul, 2021 Kia Seltos, 2020-2021 Kia Soul, 2021 Hyundai Veloster, and 2019-2020 Hyundai Veloster. CSF 3923 also cross-references Bosch 13796 and 13862 for the same application.

What This Radiator Helps Address

  • Leaking or cracked radiator tanks
  • Restricted coolant flow from an aging core
  • Cooling-system overheating concerns
  • Oil-cooler service needs on equipped applications
  • Replacement of a damaged OE-style radiator assembly

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet orientation, and oil cooler configuration before installation. Confirm vehicle year, make, and model against the listed fitment for Kia Seltos, Kia Soul, and Hyundai Veloster applications. Transfer and reconnect all cooling-system components according to the vehicle service procedure, then refill and bleed the system to remove trapped air.

Quality Assurance

CSF manufactures cooling components with OE-style construction details, including aluminum-core and plastic-tank radiator designs. Part number 3923 is specified with application-based fitment data and dimensional details to support accurate replacement selection.

Related reading

This part fits 14 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2025KiaSeltos2.0LL4N/AUpgraded Heavy Duty Core. 29% Thicker 15.5mm vs OEM 12mm
2025KiaSoul2.0LL4N/AUpgraded Heavy Duty Core. 29% Thicker 15.5mm vs OEM 12mm
2024KiaSeltos2.0LL4N/AUpgraded Heavy Duty Core. 29% Thicker 15.5mm vs OEM 12mm
2024KiaSoul2.0LL4N/AUpgraded Heavy Duty Core. 29% Thicker 15.5mm vs OEM 12mm
2023KiaSeltos2.0LL4N/AUpgraded Heavy Duty Core. 29% Thicker 15.5mm vs OEM 12mm
2023KiaSoul2.0LL4N/AUpgraded Heavy Duty Core. 29% Thicker 15.5mm vs OEM 12mm
2022KiaSeltos2.0LL4N/AUpgraded Heavy Duty Core. 29% Thicker 15.5mm vs OEM 12mm
2022KiaSoul2.0LL4N/AUpgraded Heavy Duty Core. 29% Thicker 15.5mm vs OEM 12mm
2021HyundaiVeloster2.0LL4N/AUpgraded Heavy Duty Core. 29% Thicker 15.5mm vs OEM 12mm
2021KiaSeltos2.0LL4N/AOE style design ensures optimal fitment and performance.
2021KiaSoul2.0LL4N/AOE style design ensures optimal fitment and performance.
2020HyundaiVeloster2.0LL4N/AOE style design ensures optimal fitment and performance.
2020KiaSoul2.0LL4N/AOE style design ensures optimal fitment and performance.
2019HyundaiVeloster2.0LL4N/AOE style design ensures optimal fitment and performance.
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
BBB Industries — 13796Bosch — 13862Partslink Numbering System — HY301022825310-J300025310-J3050KI3010170