Description

25310-3E050 Radiator Compatibility

25310-3E050 Radiator Kia Sorento 2.5L CRDi Diesel (JC Chassis)

The 25310-3E050 RADIATOR is engineered specifically for the First Generation Kia Sorento Diesel. Featuring a reinforced aluminum core and an integrated transmission oil cooler, this unit is an ideal direct replacement for Automatic Transmission (AT) models designed to handle the high thermal output of the D4CB CRDi engine. Explore our cooling system catalog for your 25310-3E050 replacement.

Kia Sorento (JC / BL)

  • Model Years: 2002–2009
  • Engine: 2.5L CRDi Diesel (D4CB)
  • Transmission: Automatic (AT)

Structural Specs

  • Core Material: High-Grade Aluminum
  • Testing: 100% Pressure & Leak Verified
  • Durability: High Thermal Cycle Resilience

Part Number Reference: 25310-3E050 (Interchangeable: 25310-3E020, 25310-3E056, 25311-3E050)

Note: The Sorento JC radiator underwent changes during the 2006 facelift, specifically regarding transmission cooler line fittings and mounting tab locations. Verify your VIN to guarantee hose couplings match your vehicle exactly.


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Questions and Answers

Why do diesel engines like the 2.5L CRDi require specialized radiator cores?
Diesel powertrains operate under high compression ratios and generate intense torque loads, which produce substantial thermal output during heavy towing or highway driving. The 25310-3E050 utilizes a high-capacity core structure to dissipate heat efficiently and prevent oil breakdown.
Did the 2006 model year facelift change radiator compatibility for the Sorento JC?
Yes. Pre-facelift (2002–2005) and post-facelift (2006–2009) models feature distinct mounting tab placements and thread configurations for the automatic transmission cooler lines. Checking your VIN eliminates compatibility issues.
What are the risks of a failing internal transmission oil cooler inside the radiator?
If the internal barrier separating the coolant and transmission fluid ruptures, coolant can contaminate the transmission fluid—leading to catastrophic clutch failure. Replacing an aging radiator proactively protects your automatic transmission assembly.

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