Denso 221-9370 Radiator

Overview of the Denso Radiator 221-9370 for Mercedes-Benz

The Denso Radiator part number 221-9370 is engineered to provide reliable cooling performance for select Mercedes-Benz models. Designed with precise core dimensions and integrated transmission oil cooler, this radiator supports optimal engine temperature management in vehicles such as the GL350, GLE43 AMG, and GLS450.

• Core Height: 23.43 inches
• Core Width: 22.64 inches
• Core Thickness: 1.06 inches
• Inlet Diameter: 1.52 inches
• Outlet Diameter: 1.52 inches
• Includes Transmission Oil Cooler

Technical Details and Specifications

The Denso 221-9370 radiator features a core height of 23.43 inches and a width of 22.64 inches, providing a substantial surface area for heat dissipation. Its core thickness of 1.06 inches ensures efficient coolant flow and heat exchange. Both the inlet and outlet diameters measure 1.52 inches, compatible with factory hose sizes for a secure fit. The integrated transmission oil cooler enhances the radiator’s functionality by helping maintain transmission fluid temperature, which is critical for vehicle longevity and performance.

Compatible Mercedes-Benz Models

This radiator is compatible with a range of Mercedes-Benz vehicles, including GL350, GL450, GLE43 AMG, GLE300d, GLE350, GLE400, GLE450 AMG, GLE550e, GLS350d, GLS450, ML250, ML350, and ML400. When replacing the radiator on these models, part number 221-9370 ensures proper fitment and performance.

Common Issues Addressed by This Radiator

• Engine overheating due to radiator core damage or clogging
• Transmission fluid overheating from a faulty or missing transmission oil cooler
• Coolant leaks caused by corrosion or physical damage
• Reduced cooling efficiency from worn or undersized radiator cores
• Incompatibility with factory hose connections leading to leaks or poor fit

Installation Notes and Tips

• Verify compatibility with your specific Mercedes-Benz model before installation
• Inspect and replace radiator hoses if worn or damaged to ensure proper sealing
• Drain coolant and transmission fluid as required before removal
• Ensure all mounting points and connections are secure to prevent leaks
• Bleed the cooling system after installation to remove air pockets

Quality Assurance and Warranty

Denso radiators are manufactured to meet OEM specifications, ensuring durability and reliable performance. The 221-9370 radiator undergoes rigorous quality control testing to maintain consistent standards. Warranty coverage details should be confirmed at the time of purchase, typically including protection against manufacturing defects.