Koyorad A2419 Radiator

Koyorad A2419 Radiator for Lexus LS430

The Koyorad A2419 radiator is an OE-equivalent replacement built for the 2001-2006 Lexus LS430. It combines an aluminum core with plastic tanks and includes an internal transmission oil cooler for direct-fit cooling performance. This radiator is a practical choice for a Lexus LS430 radiator replacement when the original unit is leaking, clogged, or no longer maintaining stable operating temperatures.

Key Features

• Fits 2001-2006 Lexus LS430
• Part number: A2419
• Aluminum core with plastic tanks
• Single-row core design
• Core dimensions: 30.8125 in. wide, 16.75 in. high, 1 in. thick
• 1.5 in. inlet and 1.5 in. outlet diameters
• Internal transmission oil cooler included
• Transmission oil cooler diameter: 1.125 in.
• Tow packaging: with tow

Detailed Description

Koyorad A2419 is engineered as a direct replacement radiator for the Lexus LS430, using an aluminum core for efficient heat transfer and plastic end tanks for OE-style construction. The integrated transmission oil cooler helps manage automatic transmission fluid temperature through the radiator assembly, making this a complete cooling-system replacement for the listed application. If you are searching for a 2001-2006 Lexus LS430 radiator with transmission cooler, this part number A2419 matches the confirmed fitment and core specifications.

Koyorad focuses on OE-equivalent replacement radiators and applies its manufacturing experience to produce a radiator that follows the original equipment layout for the Lexus LS430. The result is a radiator assembly suited for owners replacing a worn or damaged cooling unit while keeping factory-style connections and cooling function.

What It Helps Fix

• Coolant leaks from cracked tanks or damaged seams
• Overheating caused by restricted radiator flow
• Transmission fluid temperature issues related to a failed cooler circuit
• Corrosion or age-related deterioration in the original radiator
• Cooling performance loss from a clogged or inefficient core

Installation Notes and Tips

Verify inlet and outlet hose sizes before installation and confirm the transmission cooler line connections match the vehicle. Flush the cooling system before installing the new radiator, inspect hoses and clamps for wear, and refill with the correct coolant mixture after installation. For best results, check for trapped air and confirm proper operating temperature during the first drive cycle. Fits 2001-2006 Lexus LS430, N/A.

Quality Assurance

Koyorad manufactures OE-equivalent radiators using application-specific dimensions and materials to support proper fitment and cooling-system function. Part number A2419 is built to match the listed Lexus LS430 application with an integrated transmission oil cooler and factory-style radiator construction.