Hayden 2554 Engine Cooling Fan Clutch

Hayden 2554 Thermal Fan Clutch Overview

The Hayden 2554 is a standard-duty thermal engine cooling fan clutch built for import applications that use a 5-inch or 6-inch fan pattern. It features an aluminum construction, non-electronic operation, and a flange mount with a 4-bolt layout for direct replacement service on select Toyota cooling systems.

Key Features

• Thermal, non-electronic fan clutch for standard-duty cooling control
• Aluminum body with raw aluminum finish
• Flange mounting style with 4 bolt holes and M6 x 1.0 threaded holes
• 5.85 in. maximum clutch diameter and 4.8 in. fan bolt circle
• Meets or exceeds OEM requirements and is performance rated
• Standard rotation for confirmed applications
• New replacement part, Hayden 2554

Detailed Description

The Hayden Fan Clutch line focuses on direct-fit cooling components for vehicles that rely on thermal fan engagement to manage engine temperature. This Hayden 2554 fan clutch uses a standard-duty thermal design to help regulate fan speed based on operating temperature, making it a practical replacement for aging or worn clutch units in Toyota 4Runner, Toyota Pickup, Toyota Celica, and Toyota Corona applications. The aluminum housing, 3.07 in. mount diameter, 0.63 in. pilot diameter, and 1.96 in. clutch-to-mounting-flange distance support a precise fit where the original cooling fan clutch uses the same flange-style configuration.

This part cross-references Dorman - HELP (77202) for the same application.

Vehicle Fitment

• Fits 1984-1995 Toyota 4Runner, N/A; thermal engine cooling fan clutch with standard duty and rotation.
• Fits 1975-1995 Toyota Pickup, N/A; thermal engine cooling fan clutch with standard duty and rotation.
• Fits 1975-1985 Toyota Celica, N/A; thermal engine cooling fan clutch with standard duty and rotation.
• Fits 1975-1982 Toyota Corona, N/A; thermal engine cooling fan clutch with standard duty and rotation.

Common Reasons for Replacement

• Engine fan stays engaged longer than normal
• Cooling fan freewheels or does not respond to temperature changes
• Excessive engine temperature during idle or low-speed driving
• Noise from a worn thermal fan clutch assembly
• Loss of proper airflow through the radiator on Toyota 4Runner, Toyota Pickup, Toyota Celica, or Toyota Corona models

Installation Notes and Tips

Verify the fan bolt circle, flange mount style, pilot dimensions, and rotation before installation. The Hayden 2554 uses a 4-bolt flange pattern with M6 x 1.0 threaded holes, so matching the original mounting layout is important for proper alignment. Inspect the fan blades, water pump area, and surrounding cooling components during replacement to confirm the source of any overheating or fan noise.

Quality Assurance

This Hayden fan clutch is a new, performance-rated replacement that meets or exceeds OEM specifications for the listed applications. It is built as a standard-duty thermal unit for dependable cooling-system service in confirmed Toyota fitments.