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Hayden 2634 Engine Cooling Fan Clutch
| Brand | Hayden 2634 |
|---|---|
| Bolt Hole Quantity | 4 |
| Bolt Thread | M8 x 1.25 Hole |
| Clutch Maximum Diameter | 6 |
| Clutch Type | B - Non-Thermal & Std Thermal |
| Color | Raw Aluminum in Color |
| Description | Fan Clutches |
| Dia. IN | 6.0 |
| Distance From Clutch To Mounting Flange | 1.12 |
| Electronic Clutch? | Non Electronic |
| Fan Bolt Circle IN | 3.25 |
| Fan Bolt Circle MM | 82.6 |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Mount Dia. IN | 1.44 |
| Mount Dia. MM | 37 |
| Mounting Hardware? | Not Included |
| Mounting Hole Quantity | 4 |
| Mounting Type | HEX |
| New or Reman | New |
| Overall Dia. MM | 152.4 |
| Overall Height IN | 2.84 |
| Overall Height MM | 72.1 |
| Performance Rated? | Yes |
| Pilot Depth IN | 0.56 |
| Pilot Depth MM | 14.3 |
| Rotation | REV |
| Style | Standard Duty |
| Type | Thermal |
| Use Type | Standard |
| Product line | Fan Clutch |
| Fits | Land Rover · 9 vehicles |
OE-grade replacement. Meets or exceeds OEM requirements for dependable cooling performance.
Aluminum construction. Lightweight material with a raw finish for a clean, functional look.
Standard duty design. Built as a thermal fan clutch for consistent engine cooling control.
Cross-references Anchor 2634, Dorman - HELP 46071 and Gates 22063 for the same application. See all 13.
Hayden 2634 Fan Clutch for Land Rover Cooling Systems
The Hayden 2634 fan clutch is a standard-duty, reverse-rotation thermal unit built for Land Rover cooling applications that need consistent fan engagement. It is a new aluminum engine cooling fan clutch with a 6.0 in. clutch diameter, 4-bolt mounting, and a hex mounting type for direct-fit service on listed vehicles.
Key Features
- Brand: Hayden Fan Clutch
- Part number: 2634
- Type: thermal, standard duty
- Rotation: reverse rotation (REV)
- Material: aluminum with raw aluminum finish
- 6.0 in. clutch diameter and 2.84 in. overall height
- 4-bolt / 4-hole mounting with M8 x 1.25 hole thread
- Meets or exceeds OEM requirements
- Performance rated and non-electronic
Product Details
Hayden Fan Clutch 2634 is built for reverse-rotation cooling fan setups used on Land Rover Discovery, Defender 90, and Range Rover applications. The thermal design responds to temperature changes to help control fan speed and maintain proper engine cooling performance. This part cross-references Dorman HELP 46071 for the same application.
Compatible With 1998-1999 Land Rover Discovery, N/A; 1997 Land Rover Defender 90, N/A; 1994-1997 Land Rover Discovery, N/A; and 1995 Land Rover Range Rover, N/A. The Hayden 2634 is also referenced under interchange numbers including Gates 22063 and 22151.
What It Helps Address
- Engine overheating caused by a worn fan clutch
- Fan engagement that is too loose or inconsistent
- Noisy cooling fan operation from clutch wear
- Reduced airflow at idle or low road speed
- Cooling performance issues on reverse-rotation Land Rover systems
Installation Notes and Tips
Verify reverse-rotation fan clutch requirements, mounting diameter, bolt circle, and pilot depth before installation. This unit uses a 4-bolt mounting pattern with a 3.25 in. fan bolt circle and a 1.44 in. mount diameter. Mounting hardware is not included, so reuse or source the correct hardware separately if needed. Confirm fan blade and pulley clearance on Land Rover Discovery, Defender 90, and Range Rover applications before final assembly.
Quality Assurance
Hayden 2634 is a new, performance-rated fan clutch that meets or exceeds OEM specifications for the listed applications. Its standard-duty thermal construction supports dependable cooling-system service in Land Rover Discovery, Defender 90, and Range Rover fitments.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1999 | Land Rover | Discovery | — | — | N/A | Reverse Rotation Standard Duty Thermal Fan Clutch without Fan Blades; Fan Clutch |
| 1998 | Land Rover | Discovery | — | — | N/A | Reverse Rotation Standard Duty Thermal Fan Clutch without Fan Blades; Fan Clutch |
| 1997 | Land Rover | Defender 90 | — | — | N/A | Standard duty reverse rotation thermal fan clutch.; Fan Clutch |
| 1997 | Land Rover | Discovery | — | — | N/A | Standard duty reverse rotation thermal fan clutch.; Fan Clutch |
| 1996 | Land Rover | Discovery | — | — | N/A | Standard duty reverse rotation thermal fan clutch.; Fan Clutch |
| 1995 | Land Rover | Discovery | — | — | N/A | Standard duty reverse rotation thermal fan clutch.; Fan Clutch |
| 1995 | Land Rover | Range Rover | 3.9L | V8 | N/A | Reverse Rotation; Standard Duty Thermal Fan Clutch; For 7 Blade Fan; Fan Clutch |
| 1995 | Land Rover | Range Rover | 4.2L | V8 | N/A | Reverse Rotation; Standard Duty Thermal Fan Clutch; For 7 Blade Fan; Fan Clutch |
| 1994 | Land Rover | Discovery | — | — | N/A | Standard duty reverse rotation thermal fan clutch.; Fan Clutch |
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