Koyorad A2139 Radiator

Koyorad A2139 Radiator for Mustang

The Koyorad A2139 radiator is an OE-equivalent replacement built for 1997-2004 Ford Mustang applications. It combines an aluminum core with plastic tanks and includes an internal transmission oil cooler for direct-fit cooling system service.

Key Features

• Fits 1997-2004 Ford Mustang, N/A
• Aluminum core with a single-row design
• Plastic tank construction
• Core dimensions: 24.9375 in. height, 18.3125 in. width, 1 in. thickness
• Inlet diameter: 1.75 in.; outlet diameter: 1.5 in.
• Internal transmission oil cooler included
• Transmission oil cooler diameter: 1.625 in.
• Part number: A2139

Detailed Description

Koyorad A2139 is a radiator replacement for Ford Mustang models from 1997 through 2004. Built with an aluminum core and plastic tanks, it follows OE-style construction for straightforward cooling system restoration. The integrated transmission oil cooler adds an important function for vehicles equipped with automatic transmission cooling through the radiator. If you are searching for a 1997-2004 Ford Mustang radiator or a Koyorad A2139 radiator replacement, this unit matches the listed application and dimensions.

Common Cooling System Issues

• Overheating caused by a restricted or leaking radiator
• Coolant loss from cracked tanks or damaged core seams
• Poor heat transfer from an aging single-row radiator
• Transmission fluid temperature concerns when the cooler circuit is compromised
• Reduced cooling performance in a high-mileage Mustang radiator assembly

Installation Notes and Tips

Confirm inlet and outlet hose sizes, cooler line connections, and overall dimensions before installation. Flush the cooling system, inspect hoses and clamps, and verify that the transmission cooler lines are clean before connecting the replacement radiator. For best results, replace worn coolant components at the same time and bleed the system according to Ford service procedures.

Quality Assurance

Koyorad manufactures OE-equivalent radiators using application-specific engineering and replacement-focused construction. Part number A2139 is built to meet the listed fitment for 1997-2004 Ford Mustang cooling system service.