CSF
1 Row Plastic Tank Aluminum Core

CSF 3720 Radiator

Brand CSF 3720
Box Height (in) 5 11/16
Box Length (in) 31 1/4
Box Weight (lbs) 13
Box Width (in) 26 1/2
Cap Included No
Core Length 18 7/16
Core Material Aluminum
Core Thickness 7/8
Core Width 22 3/4
Down Flow Or Cross Flow Type Down Flow
Hazardous Material No
Inlet Diameter 1 5/16 Right
Inlet Length (in) 23 1/4
Inlet Width (in) 1 7/8
Oil Cooler (in) 12 (high-efficiency Plate Type)
Outlet Diameter 1 9/16 Left
Outlet Length (in) 23 1/4
Outlet Width (in) 1 7/8
Radiator Core Row Quantity 1
Tank Material Plastic
Tech Note O.E.M. style Plastic tanks & Aluminum core;with quick-connect oil cooler fittings.
Product line 1 Row Plastic Tank Aluminum Core
Fits Chevrolet, GMC, and Hummer · 20 vehicles

OE-style design. Plastic tanks and an aluminum core for a direct-fit radiator replacement.

Wind tunnel tested. Validated for cooling performance in lab testing.

Quick-connect fittings. Includes quick-connect oil cooler connections for easier installation.

Cross-references Anchor 2855, APDI 8012855 and OSC 13017 for the same application. See all 9.

$137.20Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $137.20
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

OE-Style Cooling Replacement for Select GM and Hummer Models

CSF 3720 is an OE-style radiator built with a plastic tank and aluminum core design for direct replacement cooling performance. It is engineered for select Chevrolet Colorado, GMC Canyon, Hummer H3, and Hummer H3T applications, with fitment that matches factory-style dimensions and hose connections.

Key Features

  • 1-row radiator design with an aluminum core and plastic tanks
  • Down-flow configuration for factory-style cooling layout
  • Core thickness: 7/8 in.
  • Core size: 22 3/4 in. wide x 18 7/16 in. long
  • Inlet diameter: 1 5/16 in. right side
  • Outlet diameter: 1 9/16 in. left side
  • Integrated 12 in. high-efficiency plate-type oil cooler with quick-connect fittings
  • OE-style plastic tanks and aluminum core construction
  • CSF part number 3720

Product Details

CSF 3720 is part of CSF’s 1 Row Plastic Tank Aluminum Core line, a product line focused on OE-style radiator construction for direct-fit cooling system service. CSF manufactures radiators to high-performance standards and validates cooling performance through lab testing, including wind tunnel evaluation. This radiator is built for vehicles that need a factory-style replacement with the correct inlet and outlet placement, core dimensions, and oil cooler integration.

Fits 2009-2012 Chevrolet Colorado, N/A. Fits 2009-2012 GMC Canyon, N/A. Fits 2007-2010 Hummer H3, N/A. Fits 2009-2010 Hummer H3T, N/A. Fits 2006 Hummer H3, N/A, upgraded model.

This part cross-references Spectra Premium CU2855 for the same application.

Common Cooling System Issues It Can Address

  • Leaking radiator tanks or core seams
  • Restricted coolant flow from an aging radiator
  • Overheating caused by reduced heat transfer efficiency
  • Damaged or clogged integrated oil cooler passages
  • Fitment problems from a non-OE-style replacement radiator

Installation Notes

Verify radiator dimensions, inlet and outlet orientation, and oil cooler connection style before installation. This radiator uses a down-flow layout with quick-connect oil cooler fittings, so matching the factory configuration is important for proper installation. Confirm the vehicle’s cooling system is fully drained and inspected for contamination before replacing the radiator.

Quality Assurance

CSF radiators are manufactured in ISO/TSO-certified facilities and are engineered for cooling performance validation. The brand reports more than 30 million radiators sold worldwide across over 50 years of production experience.

This part fits 20 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2012ChevroletColorado5.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2012GMCCanyon5.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2011ChevroletColorado5.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2011GMCCanyon5.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2010ChevroletColorado5.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2010GMCCanyon5.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2010HummerH33.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2010HummerH35.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2010HummerH3T3.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2010HummerH3T5.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2009ChevroletColorado5.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2009GMCCanyon5.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2009HummerH33.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2009HummerH35.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2009HummerH3T5.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2009HummerH3T3.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2008HummerH35.3LV8N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2008HummerH33.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2007HummerH33.7LL5N/AOE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
2006HummerH33.5LL5N/AUpgraded Model; 1 Row Plastic Tank Aluminum Core
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 2855APDI — 8012855OSC — 13017Spectra Premium — CU2855Spectra Premium — CU130172596405325964054HU3010101HU3010102