Part #: 221-9321

Denso 221-9321 Radiator

⚙️ 9 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Cadillac, ATS and CTS
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Overview of the Denso 221-9321 Radiator for Cadillac ATS and CTS

The Denso 221-9321 radiator is engineered specifically for Cadillac ATS and CTS models, providing reliable cooling performance. Designed with precise core dimensions and integrated transmission oil cooler, this radiator supports optimal engine temperature management.

  • Core Height: 20.67 inches
  • Core Width: 19.79 inches
  • Core Thickness: 1.06 inches
  • Inlet Diameter: 1.34 inches
  • Outlet Diameter: 1.34 inches
  • Includes Transmission Oil Cooler

Detailed Product Description and Specifications

This Denso radiator, part number 221-9321, features a core height of 20.67 inches and a width of 19.79 inches, with a thickness of 1.06 inches, ensuring efficient heat dissipation. The inlet and outlet diameters are both 1.34 inches, compatible with the cooling system of Cadillac ATS and CTS vehicles. The integrated transmission oil cooler enhances transmission fluid cooling, contributing to overall vehicle performance and longevity. This radiator is designed to meet the exact fitment requirements of the specified Cadillac models, ensuring proper installation and function.

Compatible Vehicles and Common Applications

This radiator is compatible with the following Cadillac models:

  • Cadillac ATS
  • Cadillac CTS

It is used to address issues such as:

  • Engine overheating due to radiator failure
  • Transmission fluid overheating
  • Coolant leaks or core damage
  • Reduced cooling efficiency from clogged or damaged radiator
  • Maintaining optimal engine operating temperature

Installation Notes and Tips

When installing the Denso 221-9321 radiator, ensure the vehicle is cool and the cooling system is depressurized. Verify that the inlet and outlet hose diameters match the radiator connections. Properly secure all mounting points and check for leaks after installation. It is recommended to replace coolant and inspect related components such as hoses and clamps during installation to maintain system integrity.

Quality Assurance and Warranty Information

Denso radiators are manufactured to meet OEM specifications, ensuring durability and performance. The 221-9321 radiator undergoes rigorous quality control to provide reliable cooling for Cadillac ATS and CTS vehicles. Warranty coverage details should be confirmed with the original equipment manufacturer or authorized distributor.

BrandDenso
Part Number221-9321
Core Height20.6700
Core Thickness1.0600
Core Width19.7900
Inlet Diameter1.3400
Outlet Diameter1.3400
Transmission Oil Cooler IncludedYES

This part fits 9 vehicles. Search below:

YearMakeModelBody TypeTransmissionPositionNotes
2015CadillacATSN/A
2015CadillacATSAutomaticN/A
2015CadillacCTSN/A
2014CadillacATSN/A
2014CadillacATSAutomaticN/A
2014CadillacCTSSedanN/A
2014CadillacCTSN/A
2013CadillacATSN/A
2013CadillacATSAutomaticN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

21820

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.