Part #: 3661

CSF 3661 Radiator

1 Row Plastic Tank Aluminum Core
⚙️ 8 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$206.62Free Shipping
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦1 Row Plastic Tank Aluminum Core
🚗Fitment: Dodge and Freightliner, Sprinter 2500 and Sprinter 3500
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of CSF 3661 Radiator for Dodge Sprinter

The CSF 3661 radiator is designed specifically for Dodge Sprinter 2500 and Sprinter 3500 models. Featuring a durable aluminum core with plastic tanks, this radiator offers reliable cooling performance tailored to your vehicle's needs.

  • Core thickness: 1 5/8 inches
  • Core width: 16 1/16 inches
  • Core length: 26 11/16 inches
  • Aluminum core with plastic tanks
  • Cross flow design for efficient heat dissipation
  • Inlet and outlet diameter: 1 5/8 inches (left inlet, right outlet)
  • Single row radiator core
  • Includes high-efficiency plate type oil cooler (10 13/16 inches)

Detailed Product Description

The CSF 3661 radiator is engineered with a 1 5/8 inch thick aluminum core that measures 16 1/16 inches wide and 26 11/16 inches long, providing effective heat exchange for Dodge Sprinter 2500 and 3500 vehicles. The plastic tanks are designed in an OEM style, ensuring compatibility and durability. This radiator features a cross flow design, which optimizes coolant flow from the left inlet to the right outlet, both sized at 1 5/8 inches in diameter. Additionally, it includes a high-efficiency plate type oil cooler measuring 10 13/16 inches, enhancing engine cooling performance under demanding conditions.

About the 1 Row Plastic Tank Aluminum Core Product Line

The CSF 1 Row Plastic Tank Aluminum Core line combines lightweight plastic tanks with a robust aluminum core to balance durability and efficient heat transfer. This product line is designed to meet OEM specifications, providing a reliable cooling solution for vehicles like the Dodge Sprinter series. The single row core design supports effective cooling while maintaining a compact form factor suitable for various engine compartments.

Common Applications and Issues Addressed

  • Replacement for worn or leaking radiators in Dodge Sprinter 2500 and 3500
  • Resolves overheating caused by inefficient or damaged cooling components
  • Addresses coolant leaks from cracked plastic tanks or corroded cores
  • Improves engine temperature regulation during heavy-duty or extended use
  • Supports proper oil cooling with integrated high-efficiency oil cooler

Installation Notes and Tips

  • Ensure compatibility with Dodge Sprinter 2500 and 3500 models before installation
  • Check inlet and outlet hose diameters (1 5/8 inches) for proper fit
  • Verify cross flow orientation matches vehicle cooling system layout
  • Use OEM style mounting points to secure radiator firmly
  • Inspect and replace radiator cap separately as this product does not include one

Quality Assurance and Warranty

The CSF 3661 radiator is manufactured to meet OEM standards, featuring a corrosion-resistant aluminum core and durable plastic tanks. This radiator is free from hazardous materials and designed for long-term reliability. While the product does not include a radiator cap, it is compatible with CSF cap number 4501. Warranty details should be confirmed with the distributor or manufacturer to ensure coverage.

BrandCSF
Part Number3661
Position1 Row Plastic Tank Aluminum Core
Box Height (in)6
Box Length (in)39
Box Weight (lbs)18
Box Width (in)28
Cap IncludedNo
Core Length26 11/16
Core MaterialAluminum
Core Thickness1 5/8
Core Width16 1/16
Csf Cap Number4501
Down Flow Or Cross Flow TypeCross Flow
Hazardous MaterialNo
Inlet Diameter1 5/8 Left
Inlet Length (in)16 11/16
Inlet Width (in)2 1/16
Oil Cooler (in)10 13/16 (high-efficiency Plate Type)
Outlet Diameter1 5/8 Right
Outlet Length (in)16 11/16
Outlet Width (in)2 1/16
Radiator Core Row Quantity1
Tank MaterialPlastic
Tech NoteO.E.M style Plastic tanks & Aluminum core.

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2006DodgeSprinter 25002.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2006DodgeSprinter 35002.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2005DodgeSprinter 25002.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2005DodgeSprinter 35002.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2004DodgeSprinter 25002.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2004DodgeSprinter 35002.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2003DodgeSprinter 25002.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2003DodgeSprinter 35002.7LL5N/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:

27965104117AACH3010340CU2796

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