OE Quality 60-Day Returns

CSF 3914 Radiator

Brand	CSF 3914
Core Thickness	5/8
Core Width	14 5/8
Core Material	Aluminum
Tank Material	Plastic
Core Length	19 11/16
Inlet Diameter	1 3/8 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 1/16
Box Length (in)	27 11/16
Box Weight (lbs)	7
Box Width (in)	19 13/16
Hazardous Material	No
Inlet Length (in)	15 5/16
Inlet Width (in)	1 11/16
Oil Cooler (in)	10 13/16 (high-effeciency plate type)
Outlet Length (in)	15 5/16
Outlet Width (in)	1 11/16
Tech Note	O.e.m. style plastic tank & aluminum core.
Fits	Hyundai and Kia · 11 vehicles

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

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

Integrated oil cooler. High-efficiency plate-type cooler adds extra thermal management.

Cross-references Bosch 13817, Partslink Numbering System HY3010220 and 25310-H9000 for the same application. See all 4.

$123.91Free shipping

In stock · usually ships same day before 1pm CST

Step 1 — Confirm fitment

Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment

Verify this part fits before purchasing — free returns if it doesn't

Step 2 — Quantity

Free shipping to the continental U.S.

Free returns within 60 days if it doesn't fit when fitment is verified.

Not what you need? See all Radiator options

OE-Style Radiator for Hyundai and Kia

The CSF 3914 is an OE-style radiator built with an aluminum core and plastic tanks for direct replacement service. It is listed for select Hyundai Accent and Kia Rio applications, including upgraded heavy-duty coverage for later-model vehicles with a thicker core than OEM.

Key Features

Aluminum core with plastic tank construction
Cross flow radiator design
Single-row core configuration
Core thickness: 5/8 in.
Core dimensions: 19 11/16 in. length x 14 5/8 in. width
Left inlet diameter: 1 3/8 in.
Right outlet diameter: 1 5/16 in.
Integrated high-efficiency plate-type oil cooler
OE-style plastic tank and aluminum core layout
CSF 3914 radiator cross-references Bosch 13817

Fitment Details

Fits 2021-2023 Kia Rio, N/A. Upgraded Heavy Duty Core. 11% Thicker 15.5mm vs OEM 14mm.
Fits 2022 Hyundai Accent, N/A. Upgraded Heavy Duty Core. 11% Thicker 15.5mm vs OEM 14mm.
Fits 2018-2021 Hyundai Accent, N/A. OE style design ensures optimal fitment and performance.
Fits 2018-2020 Kia Rio, N/A. OE style design ensures optimal fitment and performance.

What This Radiator Helps Address

Coolant temperature control issues caused by a worn or restricted radiator
Leaks from aging plastic tanks or core seams
Reduced cooling efficiency in stop-and-go driving
Heat management concerns on vehicles with factory-style cooling layouts
Replacement needs after corrosion, cracking, or physical damage

Installation Notes

Verify inlet and outlet orientation, core dimensions, and vehicle-specific fitment before installation. This radiator uses a cross flow layout with left-side inlet and right-side outlet connections, so matching the original routing is important for proper installation. Confirm compatibility with the vehicle’s cooling system and transmission/oil cooler plumbing where applicable.

Quality Assurance

CSF manufactures this radiator as an OE-style replacement with aluminum core and plastic tank construction for the listed Hyundai Accent and Kia Rio applications. The part number is 3914.

This part fits 11 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Position	Notes
2023	Kia	Rio	1.6L	L4	N/A	Upgraded Heavy Duty Core. 11% Thicker 15.5mm vs OEM 14mm
2022	Hyundai	Accent	1.6L	L4	N/A	Upgraded Heavy Duty Core. 11% Thicker 15.5mm vs OEM 14mm
2022	Kia	Rio	1.6L	L4	N/A	Upgraded Heavy Duty Core. 11% Thicker 15.5mm vs OEM 14mm
2021	Hyundai	Accent	1.6L	L4	N/A	OE style design ensures optimal fitment and performance.
2021	Kia	Rio	1.6L	L4	N/A	Upgraded Heavy Duty Core. 11% Thicker 15.5mm vs OEM 14mm
2020	Hyundai	Accent	1.6L	L4	N/A	OE style design ensures optimal fitment and performance.
2020	Kia	Rio	1.6L	L4	N/A	OE style design ensures optimal fitment and performance.
2019	Hyundai	Accent	1.6L	L4	N/A	OE style design ensures optimal fitment and performance.
2019	Kia	Rio	1.6L	L4	N/A	OE style design ensures optimal fitment and performance.
2018	Hyundai	Accent	1.6L	L4	N/A	OE style design ensures optimal fitment and performance.
2018	Kia	Rio	1.6L	L4	N/A	OE style design ensures optimal fitment and performance.
No rows match your filter.

Directly replaces or cross-references 4 part numbers

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

Bosch — 13817Partslink Numbering System — HY301022025310-H900025310-H9050