Denso 221-3146 Radiator
OE Quality 60-Day Returns
Denso

Denso 221-3146 Radiator

Brand Denso 221-3146
Core Height 18.6870
Core Thickness 1.0600
Core Width 30.1870
Inlet Diameter 1.3750
Outlet Diameter 1.3750
Transmission Oil Cooler Included YES
Fits Toyota · 3 vehicles

OE experience. Built to OE standards for reliable performance and fit.

Radiator performance. Helps maintain proper engine cooling and function.

Transmission oil cooler included. Adds integrated cooling support in one assembly.

Cross-references APDI 8013024, CSF 3375 and DPI Performance Racing Products 13024 for the same application. See all 8.

$196.37Free shipping
In stock · usually ships same day before 1pm CST
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Order total $196.37
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Denso Radiator for Toyota Highlander

The Denso 221-3146 radiator is built for 2008-2010 Toyota Highlander models with the tow package. It is engineered to match OE-style dimensions and cooling requirements, with a transmission oil cooler included for integrated thermal management.

  • Fits 2008-2010 Toyota Highlander, w/ Tow Package
  • Core height: 18.6870 in.
  • Core width: 30.1870 in.
  • Core thickness: 1.0600 in.
  • Inlet diameter: 1.3750 in.
  • Outlet diameter: 1.3750 in.
  • Transmission oil cooler included
  • Denso part number 221-3146

OE-Style Cooling Performance

Denso draws on OE radiator supply experience to produce a radiator that follows strict standards for configuration, tank design, fin pitch, core dimensions, and materials. For Toyota Highlander cooling system service, part number 221-3146 is built to support consistent engine temperature control and dependable fitment in tow-package applications. This radiator cross-references Toyota 16041-31550 for the same application.

What This Radiator Helps Address

  • Overheating caused by a leaking or restricted radiator
  • Cooling loss from damaged tanks, fins, or core passages
  • Transmission heat management concerns when the cooler circuit is part of the radiator
  • Poor fitment after prior cooling system repairs
  • Reduced cooling efficiency in Toyota Highlander tow-package use

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet size, and tow-package application before installation. Inspect hoses, clamps, and coolant condition during replacement, and confirm the transmission cooler connections are clean and properly sealed. Flush the cooling system if contamination or debris is present. This Denso radiator 221-3146 is listed for 2008-2010 Toyota Highlander models with the tow package.

Quality Assurance

Denso states that its radiators are manufactured to OE-level standards and undergo durability and function testing before release. That process supports reliable performance and fitment for Toyota Highlander cooling system replacement applications.

Related reading

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2010ToyotaHighlanderN/Aw/ Tow Package
2009ToyotaHighlanderN/Aw/ Tow Package
2008ToyotaHighlanderN/Aw/ Tow Package
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
APDI — 8013024CSF — 3375DPI Performance Racing Products — 13024OSC — 13024Reach Cooling — 41-13024Spectra Premium — CU13024Toyota — 16041-31550TYC Cooling - Archived — 13024