Hayden 6600 Engine Cooling Fan Clutch

Heavy Duty Thermal Fan Clutch for Nissan and INFINITI

Hayden Fan Clutch 6600 is a heavy duty thermal engine cooling fan clutch built with an aluminum body and standard rotation. It is a non-electronic, flange-mount replacement that meets or exceeds OEM requirements for the listed Nissan and INFINITI applications, including Nissan TITAN, Armada, Pathfinder, NV2500, and NV3500.

Hayden Fan Clutch 6600 is part of Hayden’s Fan Clutch line, focused on thermal fan clutch replacements for import truck and SUV cooling systems. This heavy-duty style is built for direct-fit service on applications that use a 5" and 6" import clutch configuration.

Key Features

• Thermal, non-electronic fan clutch for engine cooling control
• Heavy duty style with aluminum construction
• Standard rotation design
• Flange mounting type with 4 bolt holes and 4 mounting holes
• Mounting hole thread: M6 x 1.0
• Clutch maximum diameter: 7.08 in
• Overall height: 3.53 in
• Fan bolt circle: 6.58 in (167.1 mm)
• Meets or exceeds OEM specifications
• Performance rated for demanding cooling-system service

Detailed Description

This Hayden 6600 fan clutch is engineered for vehicles that rely on a thermal clutch to regulate fan engagement based on temperature. With a raw aluminum finish, 3.19 in mount diameter, 1.25 in pilot diameter, and 0.44 in pilot depth, it is built around the dimensional requirements of the listed applications. The 6600 part number is a direct reference for buyers searching for a replacement fan clutch for Nissan TITAN, Nissan Armada, and INFINITI QX56 cooling system service.

This part cross-references Monroe Shocks & Struts 281670 for the same application.

What It Helps Address

• Cooling fan engagement that no longer responds correctly to engine temperature
• Excessive fan noise from a worn thermal clutch
• Reduced airflow through the radiator at operating temperature
• Overheating concerns tied to fan clutch wear
• Cooling-system performance loss on Nissan and INFINITI truck and SUV applications

Installation Notes and Tips

Verify flange style, bolt circle, pilot dimensions, and standard rotation before installation. Mounting hardware is not included, so reuse or source the correct hardware separately as needed. Confirm the vehicle’s cooling fan and clutch configuration against the listed fitment before ordering, especially on Nissan TITAN, Armada, Pathfinder, NV2500, NV3500, and INFINITI QX56 applications.

• Fits 2012-2017 Nissan NV2500, N/A; Standard Rotation Heavy Duty Thermal Fan Clutch
• Fits 2012-2017 Nissan NV3500, N/A; Standard Rotation Heavy Duty Thermal Fan Clutch
• Fits 2005-2015 Nissan Armada, N/A; Standard Rotation Heavy Duty Thermal Fan Clutch
• Fits 2004-2015 Nissan TITAN, N/A; Standard Rotation Heavy Duty Thermal Fan Clutch
• Fits 2008-2012 Nissan Pathfinder, N/A; Standard Rotation Heavy Duty Thermal Fan Clutch
• Fits 2004-2010 INFINITI QX56, N/A; Standard Rotation Heavy Duty Thermal Fan Clutch
• Fits 2004 Nissan Pathfinder Armada, N/A; Standard Rotation Heavy Duty Thermal Fan Clutch

Quality Assurance

Hayden identifies this fan clutch as new, performance rated, and built to meet or exceed OEM requirements for the listed applications. The aluminum construction and thermal design support consistent replacement service for import truck and SUV cooling systems.