OE Quality 60-Day Returns

Koyorad A2689-1 Radiator

Brand	Koyorad A2689-1
Core Height	25.5625
Core Material	Aluminum
Core Thickness	0.875
Core Width	19.8125
Inlet Diameter	1.5
Internal Transmission Oil Cooler	Yes
Outlet Diameter	1.3125
Tank Material	Plastic
Title	Koyorad A2689-1 Radiator
Transmission Oil Cooler Diameter	1.0625
Transmission Oil Cooler Included	Yes
Fits	Lexus · 2 vehicles

OE equivalent replacement. Built to match the original radiator specification.

Aluminum core. Helps promote efficient heat transfer with a single-row design.

Transmission oil cooler included. Adds integrated cooling support in one complete unit.

$215.03Free shipping

In stock · usually ships same day before 1pm CST

Step 1 — Confirm fitment

Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment

Verify this part fits before purchasing — free returns if it doesn't

Step 2 — Quantity

Free shipping to the continental U.S.

Free returns within 60 days if it doesn't fit when fitment is verified.

Not what you need? See all Radiator options

Koyorad A2689-1 Radiator for Lexus RX330

The Koyorad A2689-1 radiator is an OE-equivalent replacement built for 2005-2006 Lexus RX330 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 2005-2006 Lexus RX330, N/A
Aluminum core with plastic tank construction
Single-row core design for OE-style replacement fitment
Internal transmission oil cooler included
Transmission oil cooler plate quantity: 3
Inlet diameter: 1.5 in.; outlet diameter: 1.3125 in.
Core dimensions: 25.5625 in. height, 19.8125 in. width, 0.875 in. thickness

Product Details

Koyorad part number A2689-1 is engineered as a direct replacement radiator for the Lexus RX330, using OE-equivalent construction and dimensions to match the original cooling system layout. The aluminum core supports efficient heat transfer, while the plastic tanks follow the factory-style design used on many OEM radiators. With the internal transmission oil cooler built in, this radiator serves vehicles that route automatic transmission fluid through the radiator assembly for temperature control. Koyorad A2689-1 is a practical choice for Lexus RX330 radiator replacement when the original unit shows signs of age, leakage, or reduced cooling performance.

Common Issues This Radiator Can Address

Coolant leaks from a cracked or aging radiator tank
Overheating caused by restricted or inefficient heat exchange
Transmission fluid temperature control concerns tied to the radiator cooler circuit
Corrosion or deterioration in the original radiator core
Fitment problems after replacing a damaged factory radiator

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet sizes, and transmission cooler connections before installation. Flush the cooling system and inspect hoses, clamps, and the radiator cap condition during replacement. Confirm that the transmission cooler lines are clean and properly seated to prevent leaks after startup. This part cross-references OE-style radiator applications for the same vehicle platform.

Quality Assurance

Koyorad manufactures OE-equivalent radiators using application-specific engineering and replacement-focused construction. Part number A2689-1 is built to match the cooling requirements of the 2005-2006 Lexus RX330 and support reliable radiator service.

This part fits 2 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Position	Notes
2006	Lexus	RX330	3.3L	V6	N/A	—
2005	Lexus	RX330	3.3L	V6	N/A	—
No rows match your filter.