One Stop Solutions 2688 Radiator

Radiator for Lexus RX330

This OSC Premium radiator is built for 2004-2006 Lexus RX330 models without the tow package. Part number 2688 is engineered for OES form and function, with aluminum construction, a crossflow design, and an integrated plated transmission oil cooler.

Key Features

• Fits 2004-2006 Lexus RX330, N/A, wo/Tow Package
• Premium grade aluminum core and aluminum tanks
• Crossflow radiator design with one-row core construction
• Plated transmission oil cooler included
• Die-cut gasket design for leak resistance
• Individually pressure tested during production
• Factory-style fitment with matched header dimensions and OE-style mounting geometry
• Part number 2688 cross-references Spectra Premium CU2688 for the same application

Detailed Description

OSC part number 2688 is a direct-fit radiator for the Lexus RX330, designed around original equipment dimensions and cooling layout. The core measures 26 7/16 inches high by 19 3/8 inches wide, with a 5/8-inch thickness, and the unit uses a crossflow configuration with 1 5/16-inch inlet and 1 1/2-inch outlet connections. The radiator includes a plated transmission oil cooler and uses premium aluminum components throughout the core and tanks.

OSC builds this radiator with engineering updates aimed at durability and consistent cooling performance. The tubes are cadmium plated inside and out to help reduce premature failure, and each unit is pressure tested during production. Part number 2688 is a practical choice for Lexus RX330 owners replacing a leaking, restricted, or damaged radiator while maintaining OE-style fit and function.

Common Problems This Radiator Can Address

• Coolant leaks from a cracked or corroded radiator tank
• Overheating caused by reduced heat transfer through a worn core
• Transmission fluid temperature concerns related to a failing cooler circuit
• Physical damage to the radiator from age, vibration, or road debris
• Fitment issues after replacing a damaged factory radiator with an incorrect unit

Installation Notes and Tips

Verify vehicle configuration before ordering: this radiator is listed for 2004-2006 Lexus RX330 without the tow package. Confirm inlet and outlet hose sizes, cooler line routing, and overall core dimensions against the original unit before installation. Flush the cooling system, inspect hoses and clamps, and check the transmission cooler lines for contamination or wear before putting the vehicle back into service.

Quality Assurance

OSC states that each radiator is individually pressure tested and checked during multiple stages of production, including cooler testing before tank installation and final assembly testing. The design follows OES form and function standards, with factory-style components and fitment-focused engineering for the Lexus RX330 application.