CSF 3237 Radiator
OE Quality 60-Day Returns
CSF
 1 Row Plastic Tank Aluminum Core

CSF 3237 Radiator

Brand CSF 3237
Box Height (in) 5 1/2
Box Length (in) 28 7/8
Box Weight (lbs) 18
Box Width (in) 32 3/16
Cap Included No
Core Length 22 5/8
Core Material Aluminum
Core Thickness 1 1/4
Core Width 27 1/2
Csf Cap Number 4514
Down Flow Or Cross Flow Type Down Flow
Hazardous Material No
Inlet Diameter 1 1/2 Left
Inlet Length (in) 28
Inlet Width (in) 1 15/16
Oil Cooler (in) 14 3/4 (high-effeciency Concentric Type)
Outlet Diameter 1 1/2 Right
Outlet Length (in) 28
Outlet Width (in) 1 15/16
Radiator Core Row Quantity 1
Tank Material Plastic
Tech Note O.E.M. style Plastic tanks & Aluminum core.
Product line 1 Row Plastic Tank Aluminum Core
Fits Toyota · 10 vehicles

OE-style construction. Plastic tanks and an aluminum core match the original design.

Down-flow design. Promotes efficient coolant movement through the radiator.

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

Cross-references APDI 8012321, DENSO Auto Parts 221-0517 and OSC 2321 for the same application. See all 7.

$141.62Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $141.62
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Free returns within 60 days if it doesn't fit when fitment is verified.
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OE-Style Cooling for Toyota Tundra

This CSF radiator is built for 2000-2006 Toyota Tundra applications with an OE-style plastic tank and aluminum core design. Part number 3237 is engineered for direct replacement use where dependable engine cooling and factory-style fitment matter.

Key Features

  • Fits 2000-2006 Toyota Tundra, N/A
  • 1-row down-flow radiator design
  • Plastic tank and aluminum core construction
  • Core thickness: 1 1/4 in.
  • Core width: 27 1/2 in.; core length: 22 5/8 in.
  • 1 1/2 in. left inlet and 1 1/2 in. right outlet
  • High-efficiency concentric-type oil cooler: 14 3/4 in.
  • Cap not included; CSF cap number 4514

Product Details

CSF part 3237 is a radiator built to OE-style specifications with plastic tanks and an aluminum core. The down-flow layout, single-row core, and measured inlet and outlet sizing support factory-style replacement on the Toyota Tundra platform. CSF manufactures radiators for a wide range of vehicle applications and validates cooling performance through laboratory wind tunnel testing. This part cross-references APDI 8012321 and Spectra Premium CU2321 for the same application.

Common Cooling Issues Addressed

  • Leaking radiator tanks or core seams
  • Restricted coolant flow from an aging radiator
  • Overheating caused by reduced heat transfer
  • Damaged inlet or outlet connections
  • Cooling system service needs on a Toyota Tundra radiator replacement

Installation Notes

Verify inlet and outlet orientation before installation: inlet is on the left and outlet is on the right. This radiator is designed for 2000-2006 Toyota Tundra, N/A, and uses an OE-style plastic tank and aluminum core layout. Confirm cap selection separately, since a radiator cap is not included.

Quality Assurance

CSF factories are ISO/TSO certified, and the brand has supplied radiators worldwide for more than 50 years. Part 3237 is built to high-performance standards and backed by CSF’s long-running manufacturing experience in radiator production.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeLitersCylindersPositionNotes
2006ToyotaTundraExtended Cab Pickup4.7LV8N/AOE Style Design; Use Micro, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
2006ToyotaTundraStandard Cab Pickup4.7LV8N/AOE Style Design; Use Micro, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
2005ToyotaTundraExtended Cab Pickup4.7LV8N/AOE Style Design; Use Micro, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
2005ToyotaTundraStandard Cab Pickup4.7LV8N/AOE Style Design; Use Micro, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
2004ToyotaTundraExtended Cab Pickup4.7LV8N/AOE Style Design; Use Micro, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
2004ToyotaTundraStandard Cab Pickup4.7LV8N/AOE Style Design; Use Micro, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
2003ToyotaTundra—4.7LV8N/AOE Style Design; Use Micro, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
2002ToyotaTundra—4.7LV8N/AOE Style Design; Use Micro, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
2001ToyotaTundra—4.7LV8N/AOE Style Design; Use Micro, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
2000ToyotaTundra—4.7LV8N/AOE Style Design; Use Micro, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
APDI — 8012321DENSO Auto Parts — 221-0517OSC — 2321Spectra Premium — CU232116400 - 0F05016410 - 0F020TO3010187