Spectra CU13663 Radiator
OE Quality 60-Day Returns
Spectra

Spectra CU13663 Radiator

Brand Spectra CU13663
Core Height 17.6875
Core Height 450
Core Thickness 1.25
Core Thickness 32
Core Width 29.5
Core Width 750
Core Material Aluminum
Outlet Location Bottom right
Tank Material Plastic
Transmission Oil Cooler Included Yes
Radiator Cap Included No
Core Row Quantity 1
Inlet Diameter 1.375
Inlet Diameter 35
Inlet Location Top left
Outlet Diameter 1.375
Outlet Diameter 35
Down Flow Or Cross Flow Type Cross flow
Fan Included No
Fits Toyota · 4 vehicles

OE-style construction. Built with an aluminum core and plastic tanks for a direct replacement feel.

Integrated cooler. Includes a transmission oil cooler for the original cooling system layout.

Cross-flow design. Single-row core layout supports efficient coolant routing through the radiator.

Cross-references Carlson 13663, CSF 3823 and 1972 for the same application. See all 11.

$315.64Free 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 $315.64
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Radiator options

Radiator Overview

Restore cooling performance with a Spectra radiator engineered to match OE durability expectations. This radiator is built for the Toyota Sienna and uses an aluminum core with plastic tanks for a practical OE-style construction.

Part number CU13663 is a cross-flow radiator with a single-row core, integrated transmission oil cooler, and inlet and outlet sizing that follows the original application. It fits 2017-2020 Toyota Sienna, N/A, including vehicles with or without the towing package.

  • Aluminum core with plastic tanks for OE-style construction
  • Cross-flow design with a single-row core
  • Transmission oil cooler included
  • Top-left inlet and bottom-right outlet locations
  • Fits Toyota Sienna cooling system applications

Fitment Details

Fits 2017-2020 Toyota Sienna, N/A. This application includes vehicles with or without the towing package. Part number CU13663 is the correct reference to verify before ordering, and CU13663 may also be listed under interchange numbers used for the same radiator application.

Common Uses

  • Replacing a leaking or corroded radiator
  • Addressing overheating caused by restricted coolant flow
  • Restoring transmission fluid cooling through the built-in cooler
  • Correcting cracked plastic tanks or damaged core seams

Installation Notes

Verify inlet and outlet locations, core dimensions, and transmission cooler connections before installation. Confirm fitment against the vehicle’s cooling system layout for the Toyota Sienna, and compare the original radiator to part number CU13663 to ensure proper match.

Quality Assurance

Spectra Premium radiators are built to meet OE-level durability expectations for the original application. Part number CU13663 is manufactured to follow the structure and design standards associated with OE replacement cooling components.

Related reading

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
2020ToyotaSienna3.5LV6w/ or w/o Towing Package
2019ToyotaSienna3.5LV6w/ or w/o Towing Package
2018ToyotaSienna3.5LV6w/ or w/o Towing Package
2017ToyotaSienna3.5LV6w/ or w/o Towing Package
Directly replaces or cross-references 11 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Carlson — 13663CSF — 38231972160410P280164000P370164000P371221961841136638013663A13663PR13663A