Koyorad A2291 Radiator

Koyorad A2291 Radiator for Dodge Ram

The Koyorad A2291 radiator is an OE-equivalent replacement built for 1998-2001 Dodge Ram 1500, Ram 2500, and Ram 3500 applications. It uses an aluminum core with plastic tanks and includes an internal transmission oil cooler for direct cooling-system service.

Key Features

• Fits 1998-2001 Dodge Ram 1500, Ram 2500, and Ram 3500
• Aluminum core with plastic tank construction
• Single-row core design
• Core dimensions: 31.6875 in. height, 20.25 in. width, 1.3125 in. thickness
• Inlet diameter: 1.5 in.; outlet diameter: 1.75 in.
• Includes internal transmission oil cooler
• Transmission oil cooler diameter: 1.625 in.
• Part number: A2291

Product Details

Koyorad Radiator A2291 is engineered as a direct replacement radiator for Dodge Ram trucks that need OE-style cooling performance and transmission fluid heat exchange in one assembly. Koyorad focuses on replacement radiators built with the technical experience needed to match factory-style fitment and cooling-system function, making this unit a practical choice for Ram 1500, Ram 2500, and Ram 3500 owners servicing a worn or leaking radiator.

This radiator is built with an aluminum core for efficient heat transfer and plastic end tanks for a factory-style configuration. The integrated transmission oil cooler supports vehicles equipped with automatic transmission cooling through the radiator assembly. If you are searching for a Koyorad A2291 radiator for a 1998-2001 Dodge Ram 2500 or a Koyorad A2291 radiator for a 1998-2001 Dodge Ram 3500, this part matches the listed applications.

Common Problems This Part Can Address

• Coolant leaks from a cracked or corroded radiator
• Overheating caused by reduced radiator efficiency
• Transmission fluid temperature issues related to a failed cooler circuit
• Damaged inlet or outlet connections
• Cooling-system service needs on high-mileage Dodge Ram trucks

Installation Notes and Tips

Verify inlet and outlet sizes, core dimensions, and transmission cooler connections before installation. Flush the cooling system, inspect hoses and clamps, and confirm the radiator mounts and fan shroud alignment are in good condition. For best results, replace degraded coolant and check for any contamination in the transmission cooler circuit during service.

Quality Assurance

Koyorad builds OE-equivalent radiators using application-specific engineering and manufacturing experience to support proper replacement fitment and cooling-system performance. Part number A2291 is listed for the confirmed Dodge Ram applications above.