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Four Seasons 36903 Engine Cooling Fan Clutch
| Brand | Four Seasons 36903 |
|---|---|
| Material | Aluminum |
| Use Type | Standard |
| Color | Raw aluminum in color |
| Bolt Hole Quantity | 4 |
| Mounting Hole Quantity | 4 |
| Distance From Clutch To Mounting Flange | 2.14 |
| Clutch Maximum Diameter | 6.65 |
| Rotation | Std |
| Mounting Type | Flange |
| Bolt Quantity | 4 |
| Bolt Thread | M6 x 1.0 hole |
| Clutch Type | A - 5" & 6" import |
| Description | Fan clutches |
| Dia. IN | 6.65 |
| Electronic Clutch? | Non electronic |
| Fan Bolt Circle IN | 6.03 |
| Fan Bolt Circle MM | 153.2 |
| Meets / Exceeds OEM? | Yes |
| Mount Dia. IN | 3 |
| Mount Dia. MM | 76 |
| Mounting Hardware? | Not included |
| New or Reman | New |
| Overall Dia. MM | 168.9 |
| Overall Height IN | 2.7 |
| Overall Height MM | 68.7 |
| Performance Rated? | Yes |
| Pilot Depth IN | 0.55 |
| Pilot Depth MM | 14 |
| Pilot Dia. IN | 0.69 |
| Style | Standard duty |
| Product line | Fan Clutch |
| Fits | Mazda · 11 vehicles |
Thermal clutch. Responds to temperature changes for consistent fan control.
Standard duty. Built for everyday cooling system operation.
Aluminum construction. Lightweight material with a raw aluminum finish.
Cross-references Anchor 2652, Four Seasons 36903 and Gates 22090 for the same application. See all 36.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Four Seasons 36903 Fan Clutch Overview
Four Seasons 36903 is a standard-duty thermal engine cooling fan clutch built with an aluminum body and a flange mount. It is a non-electronic replacement that meets or exceeds OEM requirements and is performance rated for direct-fit cooling system service.
Compatible With Mazda MPV and Mazda B2600 applications, this fan clutch is built for standard rotation operation and precise fitment on supported import cooling fan assemblies. The Four Seasons Fan Clutch line focuses on dependable thermal engagement for everyday engine cooling control.
Key Features
- Part number: 36903
- Brand line: Four Seasons Fan Clutch
- Thermal, non-electronic fan clutch design
- Standard rotation (STD)
- Aluminum construction with raw aluminum finish
- Flange mounting style
- 4-bolt / 4-mounting-hole configuration
- Meets or exceeds OEM specifications
- Performance rated and standard duty
- Fan bolt circle: 6.03 in. (153.2 mm)
- Mount diameter: 3 in. (76 mm)
Detailed Description
Four Seasons 36903 is an engine cooling fan clutch designed for thermal engagement in standard-duty cooling systems. Its aluminum housing, 6.65-inch clutch diameter, and flange-style mounting layout support accurate replacement on select Mazda MPV and Mazda B2600 models. The unit uses a 4-bolt pattern with M6 x 1.0 hole threading and a 0.69-inch pilot diameter for proper alignment in the fan drive assembly.
This part cross-references Gates 22090 for the same application. For buyers searching for a Mazda MPV fan clutch replacement or a Mazda B2600 thermal fan clutch, Four Seasons 36903 provides a direct-fit option built to OEM-level dimensional requirements.
What It Helps Address
- Engine cooling fan not engaging at the correct temperature
- Excessive fan noise from a worn thermal clutch
- Reduced airflow through the radiator at idle or low speed
- Cooling system performance issues caused by clutch slip
- Replacement needs on aging Mazda MPV and Mazda B2600 fan drive assemblies
Installation Notes and Tips
Verify the fan bolt circle, pilot diameter, mounting depth, and rotation before installation. This unit uses a flange mount and does not include mounting hardware. Confirm standard rotation and match the existing fan clutch dimensions to the vehicle’s cooling fan assembly before final fitment.
Fits 1989-1994 Mazda MPV, N/A. Fits 1989-1993 Mazda B2600, N/A.
Quality Assurance
Four Seasons 36903 is a new replacement part that meets or exceeds OEM specifications and is performance rated for cooling system service.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1994 | Mazda | MPV | 2.6L | L4 | N/A | Standard rotation thermal engine cooling fan clutch compatible.; Fan Clutch |
| 1993 | Mazda | B2600 | — | — | N/A | Standard rotation thermal engine cooling fan clutch compatible.; Fan Clutch |
| 1993 | Mazda | MPV | 2.6L | L4 | N/A | Standard rotation thermal engine cooling fan clutch compatible.; Fan Clutch |
| 1992 | Mazda | B2600 | — | — | N/A | Standard rotation thermal engine cooling fan clutch compatible.; Fan Clutch |
| 1992 | Mazda | MPV | 2.6L | L4 | N/A | Standard rotation thermal engine cooling fan clutch compatible.; Fan Clutch |
| 1991 | Mazda | B2600 | — | — | N/A | Standard rotation thermal engine cooling fan clutch compatible.; Fan Clutch |
| 1991 | Mazda | MPV | 2.6L | L4 | N/A | Standard rotation thermal engine cooling fan clutch compatible.; Fan Clutch |
| 1990 | Mazda | B2600 | — | — | N/A | Standard rotation thermal engine cooling fan clutch compatible.; Fan Clutch |
| 1990 | Mazda | MPV | 2.6L | L4 | N/A | Standard rotation thermal engine cooling fan clutch compatible.; Fan Clutch |
| 1989 | Mazda | B2600 | — | — | N/A | Standard rotation thermal engine cooling fan clutch compatible.; Fan Clutch |
| 1989 | Mazda | MPV | 2.6L | L4 | N/A | Standard rotation thermal engine cooling fan clutch compatible.; Fan Clutch |
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