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Global Parts 13603C Radiator
| Brand | Global Parts 13603C |
|---|---|
| Core Thickness | 0.63 |
| Core Thickness | 16 |
| Core Material | Aluminum |
| Tank Material | Plastic |
| Transmission Oil Cooler Included | Yes |
| Core Row Quantity | 1 |
| Inlet Diameter | 1.38 |
| Inlet Diameter | 35.05 |
| Outlet Diameter | 1.4 |
| Outlet Diameter | 35.56 |
| Engine Oil Cooler Included | No |
| Engine Oil Cooler Fitting Diameter | 0.39 |
| Down Flow Or Cross Flow Type | Cross flow |
| Engine Oil Cooler Fitting Type | Tube fitting |
| Engine Oil Cooler Fittings Distance Apart | 14.57 |
| Core Fin Quantity | 78 (every 4") |
| Fits | Kia · 5 vehicles |
OE direct replacement. Fits as a radiator replacement when the original unit fails.
Aluminum core. Helps dissipate heat efficiently for dependable engine cooling.
Transmission oil cooler included. Adds integrated cooling support in one assembly.
Cross-references BENDIX PREMIUM BRAKE SHOES 960, CSF 3873 and DENSO Auto Parts 221-9600 for the same application. See all 16.
Radiator for 2016-2020 Kia Optima
Global Parts 13603C is a replacement radiator for the 2016-2020 Kia Optima. It is built with an aluminum core and plastic tanks, and it includes a transmission oil cooler for vehicles equipped with automatic transmission cooling through the radiator.
Key Features
- Direct-fit radiator for 2016-2020 Kia Optima applications
- Aluminum core with plastic tank construction
- Cross-flow design with 1-row core
- Transmission oil cooler included
- Inlet diameter: 1.38 in. (35.05 mm)
- Outlet diameter: 1.4 in. (35.56 mm)
- Core thickness: 0.63 in. (16 mm)
- Core fin count: 78 every 4 in.
Detailed Description
Global Parts 13603C radiator is engineered for the 2016-2020 Kia Optima when the original cooling unit is leaking, clogged, or no longer maintaining proper operating temperature. The aluminum core helps transfer heat away from the engine, while the plastic tanks provide a lightweight OE-style construction. This radiator also includes a transmission oil cooler, making it a practical replacement for Optima models that route transmission fluid cooling through the radiator assembly. Part number 13603C is also referenced in aftermarket interchange listings for the same application.
Common Issues This Radiator Can Address
- Engine overheating from a restricted or damaged radiator
- Coolant leaks from cracked tanks or worn seams
- Transmission fluid temperature concerns tied to a failed cooler circuit
- Reduced cooling efficiency from internal corrosion or blockage
- Temperature instability during stop-and-go driving
Installation Notes and Tips
Verify inlet and outlet hose sizes, cooler line routing, and mounting points before installation. Flush the cooling system and inspect hoses, clamps, and the radiator cap condition during replacement. Confirm that the transmission cooler connections match the vehicle’s original setup on your Kia Optima before final assembly. Part number 13603C should be matched to the vehicle by year and cooling configuration.
Quality Assurance
Global Parts supplies replacement cooling components for OE-style service applications. This radiator is built to match the listed fitment for the 2016-2020 Kia Optima and is intended as a direct replacement for the original unit.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2020 | Kia | Optima | 2.4L | L4 | — | N/A | — |
| 2019 | Kia | Optima | 2.4L | L4 | — | N/A | — |
| 2018 | Kia | Optima | 2.4L | L4 | — | N/A | — |
| 2017 | Kia | Optima | 2.4L | L4 | — | N/A | — |
| 2016 | Kia | Optima | 2.4L | L4 | GAS | N/A | — |
| No rows match your filter. | |||||||