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Dayco 4PK856EE Serpentine Belt - Air Conditioning
| Brand | Dayco 4PK856EE |
|---|---|
| Position | Air Conditioning |
| Color | Black |
| Cross Section | K-Section |
| Effective Length | 33.701 |
| Effective Length | 856.01 |
| Free Length | 32.8 |
| Free Length | 833.120 |
| Material | EPDM4 |
| Maximum Operating Temperature | 100 |
| Maximum Operating Temperature | 212 |
| Minimum Operating Temperature | -45 |
| Minimum Operating Temperature | -42.7 |
| Outside Circumference | 0 |
| Rib Depth | Standard |
| Rib Profile | Straight Rib |
| Rib Quantity | 4 |
| Standards | SAE J1459 |
| Top Width | .54 |
| Product line | Supersedes E040328 |
| Fits | BMW · 5 vehicles |
EPDM4 material. Built for durable accessory drive performance.
4-rib design. Delivers reliable grip and smooth power transfer.
SAE J1459 compliant. Meets recognized industry standards for belts.
Dayco 4PK856EE Serpentine Belt for BMW X5
The Dayco 4PK856EE is an EPDM4 serpentine belt for accessory drive applications, built for the air conditioning position on select BMW X5 models. It is an elastic self-tensioning belt that supersedes E040328 and is specified for 2009-2013 BMW X5 air conditioning service.
Key Features
- Part number: 4PK856EE
- Brand: Dayco
- Elastic self-tensioning serpentine belt for air conditioning drive use
- EPDM4 construction for accessory drive system durability
- 4-rib K-section profile with straight rib design
- Top width: 0.54 in.
- Effective length: 33.701 in. (856.01 mm)
- Free length: 32.8 in. (833.120 mm)
- Black belt finish
- Meets SAE J1459 standards
Product Details
Dayco 4PK856EE is a replacement serpentine belt for the accessory drive belt system, engineered for the air conditioning position on BMW X5 applications from 2009 through 2013. The elastic self-tensioning design supports proper belt fitment without a conventional tensioner setup on the specified application, while the EPDM4 material helps maintain belt performance in demanding underhood conditions. This part number, 4PK856EE, also supersedes E040328 for the same application.
Fits 2009-2013 BMW X5, Air Conditioning. This fitment is listed for BMW X5 air conditioning service only, so confirm the vehicle year and accessory drive configuration before ordering. The Dayco 4PK856EE is a direct-fit serpentine belt choice for BMW X5 owners servicing the A/C drive path.
Common Problems This Belt Can Address
- Cracked or glazed accessory drive belt material
- Squealing from a worn air conditioning belt
- Loss of proper belt tension on the specified BMW X5 application
- Visible belt wear, fraying, or rib damage
- Air conditioning drive belt replacement during routine maintenance
Installation Notes and Tips
Verify the existing belt routing and confirm the vehicle uses the air conditioning application listed for 2009-2013 BMW X5. Inspect pulleys, idlers, and the accessory drive path for wear before installing the new belt. Because this is an elastic self-tensioning belt, installation should follow the correct service procedure for the application to avoid overstretching or damage.
Quality Assurance
This Dayco belt is manufactured to SAE J1459 standards and uses EPDM4 construction for accessory drive service. Part number 4PK856EE supersedes E040328 for the listed BMW X5 application.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2013 | BMW | X5 | 3.0L | L6 | Air Conditioning | Elastic Self-Tensioning Belt; Supersedes E040328 |
| 2012 | BMW | X5 | 3.0L | L6 | Air Conditioning | Elastic Self-Tensioning Belt; Supersedes E040328 |
| 2011 | BMW | X5 | 3.0L | L6 | Air Conditioning | Elastic Self-Tensioning Belt; Supersedes E040328 |
| 2010 | BMW | X5 | 3.0L | L6 | Air Conditioning | Elastic Self-Tensioning Belt; Supersedes E040328 |
| 2009 | BMW | X5 | 3.0L | L6 | Air Conditioning | Elastic Self-Tensioning Belt; Supersedes E040328 |
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