Denso 221-9243 Radiator

Denso Radiator for Ram and Dodge Trucks

The Denso 221-9243 radiator is built for direct-fit cooling performance in select Ram and Dodge truck applications. With OE-style dimensions, inlet and outlet sizing, and no transmission oil cooler included, it supports dependable engine temperature control for daily driving and demanding use.

Compatible With 2009-2021 Ram 1500, Ram 1500 Classic, Ram 2500, Ram 3500, and 2009-2010 Dodge Ram 1500 and Ram 2500 applications.

Key Features

• Core height: 27.4800 in.
• Core width: 22.8100 in.
• Core thickness: 1.0600 in.
• Inlet diameter: 1.5000 in.
• Outlet diameter: 1.7700 in.
• No transmission oil cooler included
• OE-style radiator configuration for proper fitment

Product Details

Denso supplies radiators to original equipment vehicle manufacturers worldwide, and this radiator reflects that OE engineering approach. The core dimensions, tank design, fin pitch, and materials are built to meet strict manufacturer standards for fit and cooling performance. For Ram 1500, Ram 1500 Classic, Ram 2500, and Ram 3500 trucks, the Denso 221-9243 provides a direct replacement option that matches the cooling system requirements of the listed applications. This part cross-references APDI 8013129 and Spectra Premium CU13129 for the same application.

Common Cooling System Issues This Radiator Addresses

• Engine overheating from a leaking or restricted radiator
• Coolant loss caused by cracked tanks or damaged core passages
• Reduced cooling efficiency from age-related corrosion or clogging
• Temperature instability during towing, hauling, or stop-and-go driving
• Fitment problems from using a radiator with incorrect inlet or outlet sizing

Installation Notes and Tips

• Verify radiator dimensions and hose connection sizes before installation.
• Inspect upper and lower hoses, clamps, and coolant condition during replacement.
• Flush the cooling system if contamination or debris is present.
• Confirm the vehicle does not require a transmission oil cooler in the radiator assembly before ordering.
• Follow the vehicle service procedure for proper coolant fill and air bleeding.

Quality Assurance

Denso’s OE supplier background and durability testing support consistent fitment and function across the listed Ram and Dodge truck applications. The 221-9243 is built to the same type of dimensional and performance standards used in original equipment cooling systems.