Koyorad A2418 Radiator

Brand Koyorad A2418
Core Height 16.75
Core Material Aluminum
Core Row Quantity 1
Core Thickness 0.625
Core Width 30.8125
Inlet Diameter 1.5
Internal Transmission Oil Cooler Yes
Outlet Diameter 1.5
Tank Material Plastic
Title Koyorad a2418 radiator
Tow Packaging Without tow
Transmission Oil Cooler Diameter 1.125
Transmission Oil Cooler Included Yes
Fits Lexus · 6 vehicles

OE equivalent radiator. Built to deliver a direct replacement fit and finish.

Aluminum core. Helps shed heat efficiently with a single-row design.

Transmission oil cooler included. Adds integrated cooling for the transmission fluid.

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Koyorad A2418 Radiator for Lexus LS430

The Koyorad A2418 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 cooling-system service on this application.

Key Features

  • Fits 2001-2006 Lexus LS430, N/A
  • Aluminum core with plastic tank construction
  • Single-row core design for OE-style replacement fitment
  • Internal transmission oil cooler included
  • Inlet diameter: 1.5 in.; outlet diameter: 1.5 in.
  • Transmission oil cooler diameter: 1.125 in.
  • Core dimensions: 16.75 in. height, 30.8125 in. width, 0.625 in. thickness

Detailed Description

Koyorad A2418 is a radiator replacement for the Lexus LS430 that follows OE-equivalent construction and sizing. The aluminum core supports efficient heat transfer, while the plastic tanks match common factory-style radiator design. This radiator includes an internal transmission oil cooler, making it a direct service part for vehicles equipped with integrated transmission cooling. Koyorad A2418 is a practical choice when replacing a leaking, clogged, or damaged radiator on the 2001-2006 Lexus LS430.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Radiator Helps Address

  • Coolant leaks from cracked tanks or damaged seams
  • Overheating caused by restricted or inefficient radiator flow
  • Transmission fluid temperature issues related to a failed internal cooler
  • Corrosion or age-related deterioration in the original radiator
  • Reduced cooling performance on a high-mileage Lexus LS430

Installation Notes and Tips

Verify inlet and outlet hose diameters before installation and confirm the transmission cooler line connections match the vehicle. Flush the cooling system, inspect hoses and clamps, and replace worn seals or related components as needed. After installation, refill with the correct coolant mixture and bleed the system according to Lexus service procedures.

Quality Assurance

Koyorad manufactures OE-equivalent radiators using application-specific engineering and replacement-focused construction. Part number A2418 is built to match the listed Lexus LS430 fitment and cooling-system requirements.

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
2006LexusLS4304.3LV8—
2005LexusLS4304.3LV8—
2004LexusLS4304.3LV8—
2003LexusLS4304.3LV8—
2002LexusLS4304.3LV8—
2001LexusLS4304.3LV8—