Part #: 3663

CSF 3663 Radiator

⚙️ 12 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
🚗Fitment: Ram, 2500 and 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 Radiator Part 3663 for Ram 2500 and 3500

The CSF radiator part number 3663 is designed specifically for Ram 2500 and 3500 models, providing reliable cooling performance. Engineered with an aluminum core and plastic tanks, this radiator supports efficient heat dissipation and durability for heavy-duty applications.

  • Core thickness: 1 5/8 inches
  • Core width: 21 11/16 inches
  • Core length: 26 5/8 inches
  • Aluminum core material with plastic tanks
  • Cross flow design with 2 core rows
  • Inlet and outlet diameter: 1 13/16 inches (left inlet, right outlet)
  • Includes a 12-inch high-efficiency plate type oil cooler with quick-connect fittings
  • Cap not included

Detailed Radiator Specifications and Features

This CSF radiator (part number 3663) features a cross flow design that enhances coolant flow and heat exchange efficiency. The aluminum core provides lightweight strength and corrosion resistance, while the plastic tanks reduce overall weight without compromising durability. The radiator core measures 26 5/8 inches in length, 21 11/16 inches in width, and 1 5/8 inches in thickness, optimized for the cooling demands of Ram 2500 and 3500 trucks. Both the inlet and outlet have a diameter of 1 13/16 inches, positioned on the left and right sides respectively, facilitating straightforward hose connections. Additionally, the integrated 12-inch high-efficiency plate type oil cooler with quick-connect fittings supports engine oil temperature regulation, contributing to overall engine longevity.

Applications and Common Issues Addressed

  • Replacement for worn or leaking radiators on Ram 2500 and 3500 models
  • Resolves overheating problems caused by inefficient cooling systems
  • Addresses coolant leaks from damaged or cracked radiator tanks
  • Improves engine oil cooling with integrated oil cooler for heavy-duty use
  • Restores proper coolant flow and pressure in cross flow radiator setups

Installation Notes and Tips

When installing the CSF radiator part 3663 on Ram 2500 or 3500 vehicles, ensure all hose connections match the 1 13/16 inch inlet and outlet diameters. The cross flow design requires proper orientation for optimal coolant circulation. Since the radiator does not include a cap, reuse the existing cap or source a compatible replacement. The integrated oil cooler uses quick-connect fittings, which simplify installation but should be checked for secure attachment to prevent leaks. Verify coolant levels and system pressure after installation to confirm proper operation.

Quality Assurance and Warranty Information

CSF radiators are manufactured to meet OEM specifications, using high-quality aluminum cores and durable plastic tanks. Part number 3663 undergoes rigorous testing to ensure reliable performance under demanding conditions typical of Ram 2500 and 3500 trucks. While specific warranty details may vary, CSF products generally include coverage against manufacturing defects. Consult product documentation or authorized sources for exact warranty terms.

BrandCSF
Part Number3663
Box Height (in)8 4/16
Box Length (in)37 15/16
Box Weight (lbs)21
Box Width (in)25 5/16
Cap IncludedNo
Core Length26 5/8
Core MaterialAluminum
Core Thickness1 5/8
Core Width21 11/16
Down Flow Or Cross Flow TypeCross Flow
Hazardous MaterialNo
Inlet Diameter1 13/16 Left
Inlet Length (in)22 1/16
Inlet Width (in)2 5/16
Oil Cooler (in)12 (high-efficiency Plate Type)
Outlet Diameter1 13/16 Right
Outlet Length (in)22 1/16
Outlet Width (in)2 5/16
Radiator Core Row Quantity2
Tank MaterialPlastic
Tech NoteO.E.M. style Plastic tanks & Aluminum core;with quick-connect oil cooler fittings.

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2018Ram25006.7LL6N/AOE Style Design; Primary Radiator
2018Ram35006.7LL6N/AOE Style Design; Primary Radiator
2017Ram25006.7LL6N/AOE Style Design; Primary Radiator
2017Ram35006.7LL6N/AOE Style Design; Primary Radiator
2016Ram25006.7LL6N/AOE Style Design; Primary Radiator
2016Ram35006.7LL6N/AOE Style Design; Primary Radiator
2015Ram25006.7LL6N/AOE Style Design; Primary Radiator
2015Ram35006.7LL6N/AOE Style Design; Primary Radiator
2014Ram25006.7LL6N/AOE Style Design; Primary Radiator
2014Ram35006.7LL6N/AOE Style Design; Primary Radiator
2013Ram25006.7LL6N/AOE Style Design; Primary Radiator
2013Ram35006.7LL6N/AOE Style Design; Primary Radiator

* 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:

134901349152014720 AA52014738 AACH3010374

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