OE Quality
60-Day Returns

Hayden 5027 Accessory Drive Belt Idler Pulley
Overview of Hayden Pulley 5027 Accessory Drive Belt Idler Pulley
The Hayden Pulley 5027 is a precision-engineered accessory drive belt idler pulley designed for select Mercedes-Benz models. Constructed from durable black plastic, this idler pulley supports serpentine belt systems, ensuring smooth operation and reliable tension management.
- Material: High-quality black plastic for durability and corrosion resistance
- Inside Diameter: 1.06 inches (27 mm)
- Outside Diameter: 2.5 inches (63.5 mm)
- Width: 1.062 inches (26.9 mm)
- Groove Quantity: 6 grooves compatible with serpentine belts
- Belt Width Compatibility: 0.875 inches (22.225 mm)
- Bore Diameter: 0.562 inches (14.27 mm)
- Meets or exceeds OEM specifications
- Mount Hole Quantity: 1 (mounting hardware not included)
Detailed Product Description
The Hayden Pulley 5027 is engineered as an idler and tensioner pulley for accessory drive belt systems, specifically designed to fit a range of Mercedes-Benz vehicles including the 300CE, 300E, 300SEL, 300SL, 300TE, C36 AMG, C280, E320, E420, S320, S420, S430, S500, SL500, and SL600 models. Its six-groove design accommodates serpentine belts with a width of 0.875 inches (22.225 mm), providing consistent belt alignment and tension. The black plastic construction offers resistance to wear and environmental factors, contributing to the longevity of the pulley within the engine bay.
As part of the Hayden Pulley product line, this component is manufactured to meet or exceed original equipment manufacturer (OEM) standards, ensuring compatibility and performance that aligns with factory specifications. The Pulley line focuses on delivering reliable accessory drive belt system components that maintain proper belt routing and tension, critical for the operation of alternators, power steering pumps, and air conditioning compressors.
Common Applications and Problem Resolution
- Replaces worn or damaged idler pulleys causing belt misalignment or noise
- Addresses belt slippage or improper tension in serpentine belt systems
- Eliminates squealing or chirping noises related to pulley wear
- Prevents premature belt wear due to pulley groove damage or deformation
- Restores proper accessory drive function in Mercedes-Benz models listed
Installation Notes and Tips
- Verify compatibility with your specific Mercedes-Benz model before installation
- Ensure the serpentine belt width matches the pulley groove specifications (0.875 inches)
- Mounting hardware is not included; reuse OEM hardware or acquire appropriate fasteners
- Inspect belt condition and replace if necessary during pulley installation
- Follow manufacturer torque specifications for mounting bolt to avoid damage
Quality Assurance and Warranty
The Hayden Pulley 5027 is manufactured to meet or exceed OEM quality standards, providing reliable performance for Mercedes-Benz accessory drive belt systems. While specific warranty details are not provided, Hayden products typically adhere to industry quality controls to ensure durability and fitment accuracy. It is recommended to consult product documentation or supplier information for warranty coverage.
| Brand | Hayden |
| Part Number | 5027 |
| Position | Pulley |
| Belt Type | Serpentine |
| Belt Width IN | 0.875 |
| Belt Width MM | 22.225 |
| Bore Dia. IN | .562 |
| Color | Black |
| Description | Idler / Tensioner Pulley |
| Groove Quantity | 6 |
| I.D. MM | 7.9375 |
| Inside Diameter | 1.06 |
| Material | Plastic |
| Meets / Exceeds OEM? | Yes |
| Mount Hole Qty | 1 |
| Mounting Hardware? | Not Included |
| O.D. MM | 63.500 |
| Outside Diameter | 2.500 |
| Pulley Type | Idler Pulley |
| Pulley Width IN | 1.062 |
| Pulley Width MM | 26.9 |
| Style | Idler / Tensioner Pulley |
| Type | Pulley |
| Width | 25.4 |
This part fits 44 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2001 | Mercedes-Benz | SL600 | N/A | Pulley | ||
| 2000 | Mercedes-Benz | SL600 | N/A | Pulley | ||
| 1999 | Mercedes-Benz | S320 | N/A | Pulley | ||
| 1999 | Mercedes-Benz | S420 | N/A | Pulley | ||
| 1999 | Mercedes-Benz | S430 | N/A | Pulley | ||
| 1999 | Mercedes-Benz | S500 | N/A | Pulley | ||
| 1998 | Mercedes-Benz | S320 | N/A | Pulley | ||
| 1998 | Mercedes-Benz | S420 | N/A | Pulley | ||
| 1998 | Mercedes-Benz | S500 | N/A | Pulley | ||
| 1998 | Mercedes-Benz | SL500 | N/A | Pulley | ||
| 1997 | Mercedes-Benz | C280 | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1997 | Mercedes-Benz | C36 AMG | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1997 | Mercedes-Benz | E320 | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1997 | Mercedes-Benz | E420 | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1997 | Mercedes-Benz | S320 | N/A | Pulley | ||
| 1997 | Mercedes-Benz | S420 | N/A | Pulley | ||
| 1997 | Mercedes-Benz | S500 | N/A | Pulley | ||
| 1996 | Mercedes-Benz | C280 | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1996 | Mercedes-Benz | C36 AMG | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1996 | Mercedes-Benz | E320 | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1996 | Mercedes-Benz | S320 | N/A | Pulley | ||
| 1996 | Mercedes-Benz | S420 | N/A | Pulley | ||
| 1996 | Mercedes-Benz | S500 | N/A | Pulley | ||
| 1995 | Mercedes-Benz | C280 | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1995 | Mercedes-Benz | C36 AMG | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1995 | Mercedes-Benz | E320 | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1995 | Mercedes-Benz | S320 | N/A | Pulley | ||
| 1994 | Mercedes-Benz | C280 | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1994 | Mercedes-Benz | E320 | N/A | w/ 6 Groove Pulley; Pulley | ||
| 1994 | Mercedes-Benz | S320 | N/A | Pulley | ||
| 1993 | Mercedes-Benz | 300CE | N/A | Pulley | ||
| 1993 | Mercedes-Benz | 300E | 3.0L | L6 | N/A | Pulley |
| 1993 | Mercedes-Benz | 300E | 2.8L | L6 | N/A | Pulley |
| 1993 | Mercedes-Benz | 300SL | N/A | Pulley | ||
| 1992 | Mercedes-Benz | 300SL | N/A | Pulley | ||
| 1992 | Mercedes-Benz | 300TE | N/A | Pulley | ||
| 1991 | Mercedes-Benz | 300SEL | N/A | Pulley | ||
| 1991 | Mercedes-Benz | 300SL | N/A | Pulley | ||
| 1991 | Mercedes-Benz | 300TE | N/A | Pulley | ||
| 1990 | Mercedes-Benz | 300SEL | N/A | Pulley | ||
| 1990 | Mercedes-Benz | 300SL | N/A | Pulley | ||
| 1990 | Mercedes-Benz | 300TE | N/A | Pulley | ||
| 1989 | Mercedes-Benz | 300TE | N/A | Pulley | ||
| 1988 | Mercedes-Benz | 300TE | N/A | Pulley |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.