Nissens 66854 Radiator - Center

Nissens 66854 Radiator Overview

Nissens 66854 is a plastic/aluminum radiator built for thermal management in select Ford and Mercury applications. It is a direct-fit cooling component for vehicles such as the Ford Explorer, Mercury Mountaineer, and Ford Explorer Sport, with fitment covering center-position applications and one 2001 Explorer listing without an oil cooler.

Key Features

• Plastic/aluminum construction for a balance of durability and heat transfer
• Core dimensions: 23.7402 in. height, 21.2598 in. width, 1.2598 in. length
• Center-position fitment for select Ford Explorer and Mercury Mountaineer applications
• OE-style radiator replacement for cooling system service
• Part number 66854 for easy identification and ordering

Detailed Description

This Nissens radiator is engineered for vehicles in the 2001-2005 Ford Explorer and Mercury Mountaineer range, plus the 2003 Ford Explorer Sport listing noted in the fitment data. The plastic/aluminum design supports efficient coolant flow and heat dissipation while matching the dimensional requirements of the application. If you are replacing a worn radiator on a Ford Explorer or Mercury Mountaineer, Nissens 66854 provides a direct replacement path for the specified center-mounted cooling setup.

Nissens develops thermal and engine-efficiency components for the aftermarket with a focus on consistent manufacturing quality. This radiator cross-references Spectra Premium CU2342 and Valeo 735007 for the same application.

Vehicle Fitment

• Fits 2002-2005 Ford Explorer, Center
• Fits 2002-2005 Mercury Mountaineer, Center
• Fits 2003 Ford Explorer Sport, N/A. Dims.: 540x588x32
• Fits 2001 Ford Explorer, N/A. without oil cooler

Common Cooling System Issues

• Coolant leaks from a damaged or corroded radiator
• Overheating caused by restricted coolant flow
• Reduced cooling performance from aging internal passages
• Physical damage to the radiator core or tanks
• Fitment mismatch during radiator replacement on Ford Explorer and Mercury Mountaineer models

Installation Notes and Tips

Verify radiator dimensions, position, and oil cooler requirements before installation. Confirm that the vehicle matches the listed year, make, model, and notes for Nissens 66854, especially the 2001 Ford Explorer without oil cooler application. Inspect hoses, clamps, and coolant condition during replacement to help complete the repair correctly.

Quality Assurance

Nissens is a market-leading manufacturer of thermal and engine-efficiency components, and this radiator is produced under the brand’s Genuine Nissens Quality standard. Part number 66854 is built to the specifications listed above for the confirmed Ford Explorer and Mercury Mountaineer applications.