Part #: 221-9240

Denso 221-9240 Radiator

⚙️ 5 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, STS
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Overview of the Denso 221-9240 Radiator for Cadillac STS

The Denso 221-9240 radiator is engineered specifically for Cadillac STS models, providing reliable cooling performance. Designed with precise core dimensions and integrated transmission oil cooler, this radiator supports optimal engine temperature management.

  • Core Height: 23.62 inches
  • Core Width: 21.3 inches
  • Core Thickness: 0.63 inches
  • Inlet Diameter: 1.36 inches
  • Outlet Diameter: 1.36 inches
  • Includes Transmission Oil Cooler

Detailed Radiator Specifications and Features

This Denso radiator (part number 221-9240) features a core height of 23.62 inches and a width of 21.3 inches, providing a substantial surface area for efficient heat dissipation. The core thickness of 0.63 inches balances durability with effective coolant flow. Both the inlet and outlet diameters measure 1.36 inches, ensuring compatibility with the Cadillac STS cooling system plumbing. Additionally, the integrated transmission oil cooler supports transmission fluid temperature regulation, contributing to overall vehicle performance and longevity.

Compatible Vehicles and Application

This radiator is compatible with Cadillac STS models, designed to meet the specific cooling requirements of this vehicle. The Denso 221-9240 radiator is suitable for replacing factory radiators that have experienced wear, leaks, or reduced cooling efficiency.

  • Overheating issues due to radiator core damage or clogging
  • Coolant leaks from cracked or corroded radiator tanks
  • Transmission fluid overheating caused by a faulty transmission oil cooler
  • Reduced engine performance linked to inefficient cooling
  • Preventative maintenance for aging cooling systems

Installation Notes and Tips

When installing the Denso 221-9240 radiator on a Cadillac STS, ensure all hose connections match the 1.36-inch inlet and outlet diameters for a secure fit. Drain the existing coolant and transmission fluid before removal. Inspect and replace any worn hoses or clamps to prevent leaks. Properly bleed the cooling system after installation to avoid air pockets and ensure optimal coolant circulation.

Quality Assurance and Warranty Information

Denso radiators are manufactured to meet OEM specifications, ensuring reliable fit and function for Cadillac STS vehicles. The 221-9240 radiator undergoes rigorous quality control testing to verify durability and performance. Warranty coverage details should be confirmed at the point of purchase, typically including protection against manufacturing defects.

BrandDenso
Part Number221-9240
Core Height23.6200
Core Thickness0.6300
Core Width21.3000
Inlet Diameter1.3600
Outlet Diameter1.3600
Transmission Oil Cooler IncludedYES

This part fits 5 vehicles. Search below:

YearMakeModelPositionNotes
2011CadillacSTSN/A
2010CadillacSTSN/A
2009CadillacSTSN/A
2008CadillacSTSN/A
2007CadillacSTSN/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:

2170021701

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