One Stop Solutions 2054 Radiator

OE-Style Radiator for Infiniti Q45

This One Stop Solutions radiator, part number 2054, is built for direct replacement service on select Infiniti Q45 applications. It uses a downflow design with a plastic tank construction and a premium aluminum core to support consistent engine cooling and transmission fluid temperature control.

Compatible With 1996-2001 Infiniti Q45 applications, including 1996 models built from 12/96 with down flow configuration. The 2054 radiator is engineered around OES form and function for a clean, factory-style fit in the Infiniti Q45 cooling system.

Key Features

• Downflow radiator design for the listed Infiniti Q45 applications
• Premium aluminum core with plastic tanks
• Transmission oil cooler included with concentric cooler design
• Core dimensions: 17 11/16 in. height, 27 3/16 in. width, 1 in. thickness
• Inlet and outlet diameters: 1 3/8 in.
• Factory-style fitment with multi-fit engineering
• Components are fitted and torqued to factory specifications
• Each unit is pressure tested during production

Detailed Description

One Stop Solutions 2054 is a replacement radiator designed for the Infiniti Q45 cooling system with OE-style form, fit, and function. The radiator uses premium-grade aluminum construction with cadmium-plated tubes inside and out to help resist premature failure, while the die-cut gasket design supports leak resistance. The integrated concentric transmission cooler is included where equipped, and the unit is built to maintain the original cooling layout without changing the appearance of the vehicle’s front-end hardware.

This part cross-references APDI 8012054 and Koyorad A2054 for the same application.

Common Problems This Radiator Can Address

• Overheating caused by a worn or restricted radiator core
• Transmission fluid temperature issues related to a failing internal cooler
• Coolant leaks from aged tanks, seams, or gasket surfaces
• Reduced cooling efficiency from damaged fins or deteriorated tubes
• Fitment problems from a radiator that no longer matches factory dimensions

Installation Notes and Tips

Verify the vehicle build date before ordering, since 1996 Infiniti Q45 applications are listed from 12/96 and use a down flow configuration. Confirm inlet and outlet sizing, cooler routing, and mounting points against the original radiator before installation. Flush the cooling system, inspect hoses and clamps, and check 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, with cooler testing performed before tank installation and again after final assembly. The design also incorporates engineering updates aimed at improving durability and cooling performance in higher-mileage vehicles.