Koyorad A13174 Radiator

Koyorad A13174 Radiator for Audi S5

The Koyorad A13174 radiator is an OE-equivalent replacement built for 2008-2012 Audi S5 models. It combines an aluminum core with plastic tanks and an internal transmission oil cooler to support factory-style cooling performance.

Key Features

• Fits 2008-2012 Audi S5, N/A
• Aluminum core with plastic tank construction
• Single-row core design
• Core dimensions: 28.375 in. height, 19.4375 in. width, 1.4375 in. thickness
• 1.5 in. inlet and 1.5 in. outlet diameters
• Internal transmission oil cooler included
• Transmission oil cooler diameter: 1.375 in. with 4 plates
• Part number: A13174

Detailed Description

Koyorad A13174 is a direct-fit radiator for Audi S5 applications from 2008 through 2012. It is built with an aluminum core for efficient heat transfer and plastic end tanks for a factory-style replacement layout. The integrated transmission oil cooler adds an important cooling circuit for vehicles equipped with automatic transmission cooling through the radiator. Koyorad uses its OE replacement manufacturing experience to produce radiators that match the needs of the original cooling system, making A13174 a practical choice for Audi S5 owners replacing a worn or leaking radiator.

What This Radiator Helps Address

• Coolant leaks from a cracked or aging radiator
• Overheating caused by reduced heat exchange efficiency
• Transmission fluid temperature control through the built-in cooler
• Damaged inlet or outlet connections
• Cooling system service on 2008-2012 Audi S5 models

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet sizes, and transmission cooler connections before installation. Drain the cooling system fully, inspect hoses and clamps for wear, and confirm the replacement unit matches the vehicle’s factory configuration for the Audi S5. After installation, refill with the correct coolant mixture and bleed the system according to service procedures to remove trapped air.

Quality Assurance

Koyorad manufactures OE-equivalent radiators using application-specific engineering and replacement-focused construction. Part number A13174 is built to meet the requirements of the listed Audi S5 fitment.