Part #: 221-9124

Denso 221-9124 Radiator

⚙️ 8 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: Chevrolet and GMC, Express 2500, Express 3500, Savana 2500, and Savana 3500
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Overview of the Denso 221-9124 Radiator

The Denso 221-9124 radiator is engineered for reliable cooling performance in Chevrolet Express 2500, Express 3500, GMC Savana 2500, and Savana 3500 models. Designed with precise core dimensions and integrated transmission oil cooler, this radiator supports efficient engine temperature management.

  • Core Height: 34.0157 inches
  • Core Thickness: 1.0236 inches
  • Core Width: 16.9291 inches
  • Transmission Oil Cooler Included
  • Inlet Diameter: 1.3268 inches
  • Outlet Diameter: 1.5630 inches

Detailed Radiator Specifications and Features

This Denso radiator (part number 221-9124) features a robust core measuring approximately 34 inches in height, 17 inches in width, and just over 1 inch in thickness. The integrated transmission oil cooler enhances heat dissipation for both engine coolant and transmission fluid, which is critical for maintaining optimal operating temperatures under heavy load conditions. The inlet and outlet diameters of 1.33 and 1.56 inches respectively ensure proper fluid flow and compatibility with the cooling system of Chevrolet Express and GMC Savana vans.

Compatible Vehicles and Applications

Compatible with Chevrolet Express 2500, Express 3500, GMC Savana 2500, and Savana 3500 models, this radiator is designed to meet the specific cooling requirements of these full-size vans. It is suitable for vehicles requiring a replacement radiator with an integrated transmission oil cooler to maintain engine and transmission efficiency.

  • Overheating issues due to radiator core damage or clogging
  • Transmission fluid overheating in vehicles with integrated coolers
  • Leaks or cracks in the radiator core or tanks
  • Reduced cooling efficiency from worn or corroded components
  • Replacement during engine cooling system upgrades or repairs

Installation Notes and Tips

When installing the Denso 221-9124 radiator, ensure all hose connections match the specified inlet and outlet diameters for a secure fit. Properly flush the cooling system before installation to prevent contamination. Verify that the transmission oil cooler lines are correctly connected to maintain transmission cooling functionality. It is recommended to inspect all mounting points and replace any worn hardware during installation.

Quality Assurance and Warranty Information

Denso radiators are manufactured to meet OEM specifications, ensuring durability and reliable performance. The 221-9124 radiator undergoes rigorous quality control testing to verify core integrity and cooling efficiency. Warranty coverage details should be confirmed with the distributor or manufacturer, typically including protection against defects in materials and workmanship.

BrandDenso
Part Number221-9124
Core Height34.0157
Core Thickness1.0236
Core Width16.9291
Inlet Diameter1.3268
Outlet Diameter1.5630
Transmission Oil Cooler IncludedYES

This part fits 8 vehicles. Search below:

YearMakeModelPositionNotes
2004ChevroletExpress 2500N/Aw/ Clamp-on hose
2004ChevroletExpress 3500N/A1st Design; w/ Clamp-on hose
2004GMCSavana 2500N/Aw/ Clamp-on hose
2004GMCSavana 3500N/A1st Design; w/ Clamp-on hose
2003ChevroletExpress 2500N/Aw/ Clamp-on hose
2003ChevroletExpress 3500N/Aw/ Clamp-on hose
2003GMCSavana 2500N/Aw/ Clamp-on hose
2003GMCSavana 3500N/Aw/ Clamp-on hose

* 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:

2148721687

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