Koyorad A2731 Radiator

Koyorad A2731 Radiator for Cadillac CTS

The Koyorad A2731 radiator is an OE-equivalent replacement built for 2004-2007 Cadillac CTS applications. It combines an aluminum core with plastic tanks and includes an internal transmission oil cooler for direct replacement service on the specified vehicles.

Key Features

• Fits 2004-2007 Cadillac CTS, N/A
• Part number: A2731
• Aluminum core with 1-row construction
• Plastic tank design
• Core dimensions: 26.875 in. wide, 16.75 in. high, 1 in. thick
• Inlet and outlet diameters: 1.375 in.
• Includes internal transmission oil cooler
• Transmission oil cooler diameter: 1.0625 in.

Product Details

Koyorad A2731 is a radiator replacement for the Cadillac CTS from 2004 through 2007. It is built with an aluminum core for efficient heat transfer and plastic end tanks for OE-style fitment. The integrated transmission oil cooler is included, making this radiator a direct-service solution for vehicles equipped with the listed cooling configuration. Koyorad applies its OE-equivalent manufacturing approach to deliver a replacement that matches the original application requirements for the Cadillac CTS.

Common Cooling System Issues It Can Address

• Coolant leaks from a damaged or aging radiator
• Overheating caused by restricted or inefficient heat exchange
• Transmission fluid temperature concerns related to a failing internal cooler
• Cracked or deteriorated plastic tanks
• Corrosion or damage to the radiator core

Installation Notes

Verify core dimensions, inlet and outlet sizes, and transmission cooler connections before installation. Flush the cooling system and inspect hoses, clamps, and related components for wear before installing the new radiator. Confirm that the replacement matches the original Cadillac CTS cooling configuration and transmission cooler setup.

Quality Assurance

Koyorad manufactures OE-equivalent radiators using application-specific engineering and cooling-system experience. Part number A2731 is built to meet the requirements of the listed Cadillac CTS fitment.