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Hayden 5049 Accessory Drive Belt Idler Assembly
| Brand | Hayden 5049 |
|---|---|
| Material | Plastic |
| Length | 5.6 |
| Color | Black |
| Inside Diameter | .314 |
| Outside Diameter | 2.750 |
| Mounting Hole Quantity | 1 |
| Belt Type | Serpentine |
| Mounting Hole Diameter | 0.25 |
| Belt Width IN | 1.0625 |
| Belt Width MM | 26.988 |
| Description | Idlers / tensioners |
| Groove | Smooth |
| Mount Hole B Dia. IN | 0.36 |
| O.D. MM | 69.850 |
| Pulley Width IN | 1.12 |
| Pulley Width MM | 28.7 |
| Style | Idler assembly |
| Type | Tensioners and pulleys |
| Product line | Idler Assembly |
| Fits | BMW · 3 vehicles |
Idler assembly. Smooth pulley keeps the serpentine belt tracking consistently.
Plastic construction. Lightweight black design for accessory drive use.
Single-hole mount. Simple, straightforward installation for the belt system.
Cross-references Dayco 89078, Four Seasons 45049 and Gates 38064 for the same application. See all 9.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Hayden 5049 Idler Assembly Overview
The Hayden 5049 accessory drive belt idler assembly is a smooth, black plastic pulley assembly built for serpentine belt routing in the accessory drive system. It is listed for select BMW 320i applications with bracketed mounting, including 1983 and 1992-1993 models.
Hayden’s Idler Assembly line focuses on accessory drive belt system components that help maintain proper belt path and pulley alignment. This Hayden 5049 idler assembly is a direct-fit style component for the specified BMW 320i applications and is identified by a smooth groove design and a 2.750-inch outside diameter.
Key Features
- Accessory drive belt idler assembly for serpentine belt systems
- Smooth groove pulley design
- Black plastic construction
- Outside diameter: 2.750 in. / 69.850 mm
- Belt width: 1.0625 in. / 26.988 mm
- Mounting hole quantity: 1
- Mounting hole diameter: 0.25 in.; mount hole B diameter: 0.36 in.
- Fits bracket-mounted BMW 320i applications
Detailed Description
The Hayden 5049 is an accessory drive belt idler assembly engineered for serpentine belt routing in the belt and cooling category. With a smooth pulley surface, it supports belt travel across the accessory drive path and is sized with a 5.6-inch length, 1.12-inch pulley width, and 2.750-inch outside diameter. This part cross-references Gates 38064 for the same application. It is listed for BMW 320i models with bracketed idler assembly mounting, including 1983 BMW 320i and 1992-1993 BMW 320i.
Common Issues This Part Addresses
- Worn or noisy idler pulley in the serpentine belt system
- Belt tracking concerns caused by pulley wear
- Improper accessory drive belt routing at the idler position
- Visible pulley damage, cracking, or surface wear
- Service replacement for bracket-mounted BMW 320i idler assembly applications
Installation Notes and Tips
Verify pulley diameter, belt width, and mounting-hole dimensions against the original part before installation. Confirm the vehicle uses the listed bracket-mounted idler assembly configuration and inspect the serpentine belt, bracket, and adjacent pulleys for wear before reassembly. For fitment reference, this Hayden 5049 idler assembly fits 1983 BMW 320i, N/A, w/ Bracket; Idler Assembly, and fits 1992-1993 BMW 320i, N/A, w/ Bracket; Idler Assembly.
Quality Assurance
Built under the Hayden Idler Assembly product line for accessory drive belt system service, this component is specified with defined material, dimensional, and fitment data for the listed BMW 320i applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1993 | BMW | 320i | N/A | w/ Bracket; Idler Assembly |
| 1992 | BMW | 320i | N/A | w/ Bracket; Idler Assembly |
| 1983 | BMW | 320i | N/A | w/ Bracket; Idler Assembly |
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