Description

25310-D4050 Radiator Compatibility

25310-D4050 Radiator Kia Optima (JF) & K5 Sedan Series (2015–2019)

The 25310-D4050 RADIATOR is engineered for the Fourth Generation Kia Optima platform. Constructed with a high-density aluminum core, this unit meets the rigorous thermal demands of the 2.0L and 2.4L GDI engine families. Ideal for Optima and K5. Explore our cooling system catalog for your 25310-D4050 replacement.

Kia Optima (JF Chassis)

  • Model Years: 2016–2018
  • Engines: 2.0L / 2.4L 4-Cylinder GDI
  • Quality: OE-Spec Core Thickness

Kia K5 & Global Variants

  • Model Years: 2015–2019
  • Testing: 100% Pressure & Leak Verified
  • Installation: Direct Factory Bolt-On

Part Number Reference: 25310-D4050 (Interchangeable: 25310-D4000)

Note: Optima JF radiator configurations differ based on Turbocharger status or Hybrid cooling loops. Verify your VIN to ensure hose diameters and transmission cooler line clips match your specific trim precisely.


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Questions and Answers

Why do turbo and non-turbo Kia Optima JF models require different radiator considerations?
Turbocharged models (such as the 2.0L T-GDI variants) operate under higher boosted pressures and require enhanced thermal dissipation profiles, differing core widths, and specific transmission/intercooler routing layouts compared to standard naturally aspirated GDI engines.
How does the high-density aluminum core benefit mid-size sedans like the Optima JF?
Mid-size sedans frequently face extended idle times in heavy traffic and sustained high-speed highway cruising. The high-density core increases surface heat exchange to protect the engine block and cylinder head from localized hot spots.
Why is providing a VIN essential when ordering a replacement radiator for the Kia Optima/K5?
Trim-specific packages (such as hybrid variants, regional emissions packages, or factory towing configurations) can subtly alter quick-connect line brackets and port angles. Sharing your VIN eliminates compatibility issues.

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