Part #: 3927

CSF 3927 Radiator

⚙️ 8 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: Chevrolet and GMC, Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD
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Overview of CSF Radiator 3927 for Chevrolet and GMC Trucks

The CSF Radiator part number 3927 is designed specifically for heavy-duty Chevrolet and GMC trucks, including the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD models. Engineered to maintain optimal engine temperature, this radiator features a durable aluminum core and plastic tanks for reliable cooling performance.

  • Core thickness: 1 1/4 inches
  • Core width: 23 3/8 inches
  • Core length: 37 9/16 inches
  • Aluminum core material with plastic tanks
  • Cross flow design for efficient coolant circulation
  • Inlet diameter: 1 5/16 inches (left side)
  • Outlet diameter: 1 1/2 inches (right side)
  • Oil cooler included: 11 1/2 inches on both left and right sides (high-efficiency plate type)
  • Single-row radiator core
  • OEM style quick-connect outlet

Detailed Product Description

The CSF 3927 radiator is built with a 1 1/4 inch thick aluminum core that measures 23 3/8 inches wide and 37 9/16 inches long, providing ample surface area for heat dissipation. The plastic tanks are designed to withstand typical operating conditions while reducing overall weight. This radiator uses a cross flow design, which improves coolant flow and heat exchange efficiency compared to down flow types. The inlet and outlet diameters are sized at 1 5/16 inches on the left and 1 1/2 inches on the right, respectively, ensuring compatibility with the factory cooling system of the specified Chevrolet and GMC heavy-duty trucks. Additionally, the integrated high-efficiency plate-type oil coolers on both sides help maintain optimal engine oil temperature under demanding conditions.

Compatible Vehicles and Applications

  • Chevrolet Sierra 2500 HD
  • Chevrolet Sierra 3500 HD
  • Chevrolet Silverado 2500 HD
  • Chevrolet Silverado 3500 HD
  • GMC Sierra 2500 HD
  • GMC Sierra 3500 HD

This radiator is intended for use in heavy-duty applications where maintaining engine temperature is critical for performance and longevity.

Common Issues Addressed by CSF Radiator 3927

  • Engine overheating due to radiator core damage or clogging
  • Coolant leaks from cracked or worn plastic tanks
  • Reduced cooling efficiency from corrosion or buildup inside the radiator
  • Oil temperature regulation issues in trucks with integrated oil coolers
  • Failure of OEM radiator components requiring a direct replacement

Installation Notes and Tips

When installing the CSF 3927 radiator, ensure all coolant hoses match the specified inlet and outlet diameters (1 5/16 inches left inlet, 1 1/2 inches right outlet). The cross flow design requires proper orientation to maintain coolant flow direction. Verify that the oil cooler lines are properly connected to the integrated high-efficiency plate-type coolers on both sides. Since the radiator does not include a cap, reuse the existing OEM cap or source a compatible replacement. Follow manufacturer torque specifications for mounting hardware to avoid damage to the plastic tanks.

Quality Assurance and Warranty

CSF radiators are manufactured to meet OEM specifications, using high-quality aluminum cores and durable plastic tanks. The part number 3927 undergoes rigorous testing to ensure reliable performance in heavy-duty Chevrolet and GMC trucks. While specific warranty details are not provided here, CSF products typically come with a limited warranty covering defects in materials and workmanship. Consult the product documentation or CSF directly for exact warranty terms.

BrandCSF
Part Number3927
Core Thickness1 1/4
Core Width23 3/8
Core MaterialAluminum
Tank MaterialPlastic
Core Length37 9/16
Inlet Diameter1 5/16 left
Outlet Diameter1 1/2 right
Down Flow Or Cross Flow TypeCross flow
Radiator Core Row Quantity1
Cap IncludedNo
Box Height (in)7 1/16
Box Length (in)48
Box Weight (lbs)26
Box Width (in)29 7/16
Hazardous MaterialNo
Inlet Length (in)23 13/16
Inlet Width (in)1 15/16
Oil Cooler (in)11 1/2 left & right (high-effeciency plate type)
Outlet Length (in)23 13/16
Outlet Width (in)2 7/16
Tech NoteO.e.m. style plastic tank & aluminum core with quick-connect outl

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2021ChevroletSilverado 2500 HD6.6LV8N/AOE style design ensures optimal fitment and performance.
2021ChevroletSilverado 3500 HD6.6LV8N/AOE style design ensures optimal fitment and performance.
2021GMCSierra 2500 HD6.6LV8N/AOE style design ensures optimal fitment and performance.
2021GMCSierra 3500 HD6.6LV8N/AOE style design ensures optimal fitment and performance.
2020ChevroletSilverado 2500 HD6.6LV8N/AOE style design ensures optimal fitment and performance.
2020ChevroletSilverado 3500 HD6.6LV8N/AOE style design ensures optimal fitment and performance.
2020GMCSierra 2500 HD6.6LV8N/AOE style design ensures optimal fitment and performance.
2020GMCSierra 3500 HD6.6LV8N/AOE style design ensures optimal fitment and performance.

* 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:

1388584565799GM3010625

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