Denso 221-4201 Radiator

Brand Denso 221-4201
Core Height 15.7500
Core Thickness 0.6250
Core Width 27.8750
Inlet Diameter 1.2500
Outlet Diameter 0.9370
Transmission Oil Cooler Included NO
Fits Acura · 5 vehicles

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

Durability tested. Passes strict function and durability testing for demanding conditions.

Radiator performance. Helps maintain proper engine cooling and function.

Cross-references Acura 19010-PJE-A51, APDI 8012431 and CSF 2720 for the same application. See all 9.

$119.68Free shipping
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Denso 221-4201 Radiator for Acura CL and TL

The Denso 221-4201 radiator is built for direct-fit cooling performance on select Acura applications. It is engineered to match OE-style dimensions and materials, helping maintain proper engine temperature control in daily driving and demanding conditions.

Key Features

  • Core height: 15.7500 in.
  • Core width: 27.8750 in.
  • Core thickness: 0.6250 in.
  • Inlet diameter: 1.2500 in.
  • Outlet diameter: 0.9370 in.
  • No transmission oil cooler included
  • OE-focused radiator configuration for fitment accuracy

Product Details

Denso 221-4201 is a replacement radiator designed around OE specifications for 2001-2003 Acura CL and 2002-2003 Acura TL applications. Denso supplies radiators to vehicle manufacturers worldwide, and this part reflects that OE engineering approach with controlled core dimensions, tank design, fin pitch, and material selection. The result is a radiator intended to support stable coolant flow and consistent heat rejection in the Acura CL and Acura TL cooling system.

This part cross-references APDI 8012431 and Spectra Premium CU2431 for the same application.

What This Radiator Helps Address

  • Engine overheating caused by reduced radiator efficiency
  • Coolant temperature instability during stop-and-go driving
  • Leaks or corrosion in an aging factory radiator
  • Poor fitment from a mismatched replacement unit
  • Cooling system service on Acura CL and Acura TL models

Installation Notes and Tips

Verify inlet and outlet hose sizes before installation, and confirm that the radiator matches the vehicle’s cooling system layout. This radiator does not include a transmission oil cooler, so applications requiring an integrated cooler should be checked carefully. For best results, inspect hoses, clamps, and coolant condition during replacement, and flush the system if contamination or debris is present.

Quality Assurance

Denso builds this radiator to OE-level standards and subjects it to durability and function testing before release. That manufacturing process supports consistent fitment and dependable cooling performance for Acura CL and Acura TL vehicles.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2003AcuraCLN/A—
2003AcuraTLN/A—
2002AcuraCLN/A—
2002AcuraTLN/A—
2001AcuraCLN/A—
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Acura — 19010-PJE-A51APDI — 8012431CSF — 2720DPI Performance Racing Products — 2431OSC — 2431Reach Cooling — 41-2431Spectra Premium — CU2431TYC Cooling - Archived — 2431Vista Pro — 431482