Part #: 3640

CSF 3640 Radiator

1 Row Plastic Tank Aluminum Core
⚙️ 11 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
📦1 Row Plastic Tank Aluminum Core
🚗Fitment: Kia and Hyundai, Cadenza, Optima, and Sonata
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of CSF 3640 Radiator for Hyundai and Kia Vehicles

The CSF 3640 radiator is designed specifically for Hyundai and Kia models including the Cadenza, Optima, and Sonata. Featuring a durable aluminum core with plastic tanks, this radiator offers reliable cooling performance tailored to these vehicles' specifications.

  • Core thickness: 5/8 inch
  • Core width: 18 15/16 inches
  • Core length: 25 1/16 inches
  • Aluminum core with plastic tanks
  • Cross flow design for efficient heat dissipation
  • Inlet and outlet diameter: 1 3/8 inches (right inlet, left outlet)
  • One core row configuration
  • Includes high-efficiency concentric oil cooler (13 3/4 inches)
  • Cap not included (CSF cap number 4503 compatible)

Details on the 1 Row Plastic Tank Aluminum Core Product Line

The CSF 1 Row Plastic Tank Aluminum Core line combines OEM-style plastic tanks with a robust aluminum core to provide a balance of durability and efficient cooling. This product line is engineered to meet the exact fitment and performance requirements of specific vehicle models, such as the Hyundai Sonata and Kia Optima, ensuring proper heat exchange and system compatibility.

Technical Description and Features

This radiator features a single-row aluminum core measuring 5/8 inch thick, 18 15/16 inches wide, and 25 1/16 inches long, optimized for cross flow cooling. The plastic tanks are designed to withstand typical operating conditions while reducing weight. The inlet and outlet ports are both 1 3/8 inches in diameter, positioned on the right and left sides respectively, facilitating straightforward integration with existing cooling system hoses. Additionally, the integrated high-efficiency concentric oil cooler enhances engine oil temperature regulation, contributing to overall engine performance and longevity.

Applications and Common Issues Addressed

  • Replacement for leaking or damaged radiators in Hyundai Cadenza, Kia Optima, and Hyundai Sonata
  • Resolves overheating caused by clogged or inefficient radiator cores
  • Addresses coolant leaks from cracked plastic tanks
  • Improves cooling system efficiency in vehicles with original equipment radiator failures
  • Supports engine oil cooling through the integrated oil cooler

Installation Notes and Tips

Ensure compatibility with your vehicle’s make and model before installation. The CSF 3640 radiator requires connection to 1 3/8 inch inlet and outlet hoses located on the right and left sides respectively. Since the radiator does not include a cap, use a compatible CSF cap number 4503 or OEM equivalent. Properly bleed the cooling system after installation to avoid air pockets and ensure optimal performance.

Quality Assurance and Warranty

CSF radiators are manufactured to meet OEM specifications, using high-quality aluminum cores and durable plastic tanks. This radiator is free of hazardous materials and designed for long-term reliability. Warranty details should be confirmed with the distributor or manufacturer, as they may vary by region.

BrandCSF
Part Number3640
Position1 Row Plastic Tank Aluminum Core
Box Height (in)7 4/16
Box Length (in)33
Box Weight (lbs)10
Box Width (in)23 9/16
Cap IncludedNo
Core Length25 1/16
Core MaterialAluminum
Core Thickness5/8
Core Width18 15/16
Csf Cap Number4503
Down Flow Or Cross Flow TypeCross Flow
Hazardous MaterialNo
Inlet Diameter1 3/8 Right
Inlet Length (in)19
Inlet Width (in)1 9/16
Oil Cooler (in)13 3/4 (high-effeciency Concentric Type)
Outlet Diameter1 3/8 Left
Outlet Length (in)19
Outlet Width (in)1 9/16
Radiator Core Row Quantity1
Tank MaterialPlastic
Tech NoteO.E.M. style Plastic tanks & Aluminum core.

This part fits 11 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2016KiaCadenza3.3LV6N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2015KiaCadenza3.3LV6N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2015KiaOptima2.4LL4N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2014KiaCadenza3.3LV6N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2014KiaOptima2.4LL4N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2013HyundaiSonata2.4LL4N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2013KiaOptima2.4LL4N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2012HyundaiSonata2.4LL4N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2012KiaOptima2.4LL4N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2011HyundaiSonata2.4LL4N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2011KiaOptima2.4LL4N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core

* 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:

131901319125310-3Q00025310-3Q50025310-3R50025310-3S00025310-3S00125310-3S6518013191CU13189CU13191HY3010171

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