Part #: 3751

CSF 3751 Radiator

⚙️ 16 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Kia and Hyundai, Forte, Elantra GT, Elantra, Forte Koup, and Forte5
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Overview of CSF Radiator Part 3751 for Hyundai and Kia

The CSF radiator part number 3751 is designed specifically for select Hyundai and Kia models, including the Elantra, Elantra GT, Forte, Forte5, and Forte Koup. This radiator features a durable aluminum core combined with OE-style plastic tanks to provide reliable cooling performance.

  • Core thickness: 5/8 inch
  • Core width: 15 5/16 inches
  • Core length: 21 11/16 inches
  • Aluminum core material with plastic tanks
  • Cross flow design for efficient heat dissipation
  • Inlet diameter: 1 3/8 inches (left side)
  • Outlet diameter: 1 5/16 inches (right side)
  • Single-row radiator core
  • Includes a high-efficiency plate type oil cooler (10 13/16 inches)

Detailed Product Description

The CSF radiator 3751 is engineered with a 5/8 inch thick aluminum core that measures 15 5/16 inches wide and 21 11/16 inches long, providing ample surface area for effective engine cooling. The cross flow design enhances coolant circulation, improving heat exchange efficiency. The plastic tanks are manufactured to OEM specifications, ensuring compatibility and durability. The radiator features a left-side inlet with a diameter of 1 3/8 inches and a right-side outlet measuring 1 5/16 inches, matching factory hose connections for straightforward installation. Additionally, the integrated high-efficiency plate type oil cooler supports optimal engine oil temperature management.

Compatible Vehicles and Applications

  • Hyundai Elantra
  • Hyundai Elantra GT
  • Kia Forte
  • Kia Forte5
  • Kia Forte Koup

This radiator is intended for use in cooling system repairs or upgrades on these specific Hyundai and Kia models, ensuring proper fit and function.

Common Issues Addressed by CSF Radiator 3751

  • Engine overheating due to radiator core damage or clogging
  • Coolant leaks from cracked or worn plastic tanks
  • Reduced cooling efficiency from corrosion or buildup
  • Oil temperature regulation problems addressed by integrated oil cooler
  • Replacement of faulty or aged radiator components to restore system performance

Installation Notes and Tips

When installing the CSF radiator 3751, verify that the inlet and outlet hose diameters match your vehicle’s specifications. The cross flow design requires proper orientation, so ensure the radiator is installed with the inlet on the left and outlet on the right as specified. It is recommended to flush the cooling system before installation to remove debris and contaminants. Use OEM-style clamps and fittings to secure hoses and prevent leaks. Since the radiator does not include a cap, reuse the existing radiator cap or source a compatible replacement.

Quality Assurance and Warranty

CSF radiators are manufactured to meet or exceed OEM standards, utilizing high-quality aluminum cores and durable plastic tanks. Part number 3751 undergoes rigorous testing to ensure reliable performance and fitment for Hyundai and Kia vehicles. While specific warranty details may vary, CSF products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.

BrandCSF
Part Number3751
Box Height (in)5 1/4
Box Length (in)30 1/4
Box Weight (lbs)8
Box Width (in)20 3/16
Cap IncludedNo
Core Length21 11/16
Core MaterialAluminum
Core Thickness5/8
Core Width15 5/16
Down Flow Or Cross Flow TypeCross Flow
Hazardous MaterialNo
Inlet Diameter1 3/8 Left
Inlet Length (in)15 13/16
Inlet Width (in)1 5/8
Oil Cooler (in)10 13/16 (high-efficiency Plate Type)
Outlet Diameter1 5/16 Right
Outlet Length (in)15 13/16
Outlet Width (in)1 5/8
Radiator Core Row Quantity1
Tank MaterialPlastic
Tech NoteO.E.M. style Plastic tanks & Aluminum core.

This part fits 16 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
2018KiaForte2.0LL4N/A
2017HyundaiElantra GT2.0LL4N/A
2017KiaForte2.0LL4N/A
2016HyundaiElantra1.8LL4N/A
2016HyundaiElantra2.0LL4N/A
2016HyundaiElantra GT2.0LL4N/A
2016KiaForte1.8LL4N/A
2016KiaForte2.0LL4N/A
2016KiaForte Koup2.0LL4N/A
2016KiaForte5Automatic2.0LL4N/A
2015HyundaiElantra1.8LL4N/A
2015KiaForte1.8LL4N/A
2015KiaForte2.0LL4N/A
2015KiaForte Koup2.0LL4N/A
2015KiaForte52.0LL4N/A
2014HyundaiElantra1.8LL4N/A

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

This part directly replaces or is cross-referenced with the following part numbers:

134111341225310-3X50025310-3X600HY3010186

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