Koyorad A2278 Radiator

Koyorad A2278 Radiator for Montero Sport

The Koyorad A2278 radiator is an OE-equivalent replacement built for the 1997-2003 Mitsubishi Montero Sport. It combines an aluminum core with plastic tanks and includes an internal transmission oil cooler for direct replacement service on automatic-transmission applications.

Key Features

• Fits 1997-2003 Mitsubishi Montero Sport
• Aluminum core with plastic tank construction
• Single-row core design
• Core dimensions: 26.0625 in. wide, 16.75 in. high, 1 in. thick
• 1.375 in. inlet and 1.375 in. outlet diameters
• Internal transmission oil cooler included
• Transmission oil cooler diameter: 1.125 in.
• Part number A2278 for easy identification

Detailed Description

Koyorad A2278 is a radiator replacement for Mitsubishi Montero Sport models from 1997 through 2003. Built with an aluminum core and plastic tanks, it follows OE-style construction and includes an internal transmission oil cooler to match the cooling needs of the original application. The single-row core measures 26.0625 inches wide by 16.75 inches high and 1 inch thick, with 1.375-inch inlet and outlet connections for a direct-fit installation. If you are searching for a Koyorad A2278 radiator for a 1997-2003 Mitsubishi Montero Sport, this unit is specified for that vehicle range.

Koyorad focuses on OE-equivalent replacement radiators and applies its manufacturing experience to produce a radiator that matches the original cooling layout. The A2278 part number is also a useful reference when verifying the correct Mitsubishi Montero Sport radiator before ordering.

Common Problems This Radiator Can Address

• Coolant leaks from a damaged or corroded radiator
• Overheating caused by restricted or inefficient heat transfer
• Transmission fluid cooling issues related to a failed internal cooler
• Cracked plastic tanks or aging radiator seams
• Reduced cooling performance in high-mileage Montero Sport vehicles

Installation Notes and Tips

Confirm radiator dimensions, inlet and outlet sizes, and transmission cooler connections before installation. This radiator includes an internal transmission oil cooler, so verify that your vehicle uses the same cooling configuration as the original unit. Flush the cooling system, inspect hoses and clamps, and replace worn seals or related components during service. For best results, compare the existing radiator to part number A2278 before final installation.

Quality Assurance

Koyorad manufactures OE-equivalent radiators using application-specific engineering and production experience focused on replacement fit and cooling performance. Part number A2278 is built to match the listed Mitsubishi Montero Sport application.