Hayden 2590 Engine Cooling Fan Clutch

Hayden 2590 Thermal Fan Clutch

The Hayden Fan Clutch 2590 is a standard-duty thermal engine cooling fan clutch built for controlled fan engagement in older Nissan cooling systems. It uses a flange mount, standard rotation, and a 5.85-inch clutch diameter to support consistent airflow management in applications such as Nissan D21, Pathfinder, 720, 200SX, and 510.

Key Features

• Thermal fan clutch with standard-duty operation
• Standard rotation design for listed Nissan applications
• Flange mounting type with 4 bolt holes and 4 mounting holes
• 5.85-inch clutch diameter and 4.98-inch overall height
• Plastic construction with raw aluminum color finish
• Meets or exceeds OEM requirements
• Performance rated for cooling system service
• New replacement part, part number 2590

Product Details

Hayden Fan Clutch 2590 is a thermal engine cooling fan clutch designed to regulate fan speed based on temperature demand. The standard-duty thermal design helps maintain proper airflow through the radiator when engine temperatures rise, then reduces drag when full fan engagement is not needed. This part number 2590 uses an M6 x 1.0 hole thread pattern, a 6.03-inch fan bolt circle, and a 3.84-inch distance from clutch to mounting flange for the specified Nissan cooling fan clutch applications.

Compatible With 1986-1989 Nissan D21, 1987-1988 Nissan Pathfinder, 1980-1986 Nissan 720, 1983-1984 Nissan 720, 1977-1983 Nissan 200SX, and 1978-1981 Nissan 510. This Hayden 2590 fan clutch is also cross-referenced to Four Seasons 36983 for the same application.

Common Cooling Issues It Can Address

• Engine temperature rise at idle or low road speed
• Reduced radiator airflow from a worn thermal clutch
• Fan engagement that feels inconsistent or delayed
• Cooling fan noise caused by clutch wear
• Loss of cooling performance in Nissan D21, Pathfinder, 720, 200SX, or 510 applications

Installation Notes and Tips

Verify standard rotation, flange mounting, bolt pattern, and fan bolt circle before installation. Mounting hardware is not included, so reuse or source the correct hardware separately if needed. Confirm clearance, overall height, and clutch-to-flange distance against the original unit before final assembly. For best results, inspect the water pump, fan blades, and radiator condition during replacement.

Quality Assurance

Hayden 2590 is a new thermal fan clutch that meets or exceeds OEM requirements and is performance rated for cooling system service. The Hayden Fan Clutch line is built for direct replacement use in vehicle cooling applications where accurate thermal fan control is required.