HomeBelts and Cooling > Accessory Drive Belt System ComponentsHayden 5999 Accessory Drive Belt Idler Pulley
Part #: 5999

Hayden 5999 Accessory Drive Belt Idler Pulley

Pulley
⚙️ 26 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Pulley
🚗Fitment: Ford, E-350 Super Duty, F-250 Super Duty, and F-350 Super Duty
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Overview of Hayden Pulley Accessory Drive Belt Idler Pulley

The Hayden Pulley 5999 is a steel accessory drive belt idler pulley designed for select Ford trucks. Engineered to meet or exceed OEM specifications, this pulley supports the proper tension and routing of flat back and serpentine belts in heavy-duty vehicles.

  • Constructed from durable steel with a black finish
  • Compatible with Ford E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty models
  • Outside diameter of 3.5 inches (90 mm) and pulley width of 1.5 inches (38.1 mm)
  • Smooth groove design for flat back and serpentine belt types
  • Mounting hole diameter of 0.665 inches (17 mm), single mounting hole
  • Meets or exceeds OEM quality standards

Detailed Product Description

The Hayden Pulley 5999 is an idler and tensioner pulley crafted from steel to provide reliable performance in accessory drive belt systems. Its smooth groove design accommodates flat back and serpentine belts with a width of 1.5 inches (38 mm), ensuring proper belt alignment and tension. The pulley features an outside diameter of 3.5 inches (90 mm) and a width of 1.5 inches (38.1 mm), dimensions that align with OEM requirements for the specified Ford models. The mounting hole diameter measures 0.665 inches (17 mm), designed for a single mounting point, and the pulley is finished in black for corrosion resistance.

The Hayden Pulley product line focuses on precision-engineered components for accessory drive systems, providing dependable fit and function. This pulley is part of the Pulley line, which emphasizes durability and compatibility with factory specifications, making it suitable for heavy-duty Ford trucks requiring consistent belt tension and smooth operation.

Common Applications and Problem Solving

  • Restores proper belt tension in Ford E-350 Super Duty and F-Series trucks
  • Eliminates belt slippage and misalignment issues
  • Replaces worn or damaged idler pulleys to prevent belt noise and premature wear
  • Supports accessory drive components such as alternators, power steering pumps, and air conditioning compressors
  • Prevents overheating and accessory drive failure caused by faulty pulleys

Installation Notes and Tips

  • Verify compatibility with your specific Ford model and engine configuration before installation
  • Mounting hardware is not included; reuse existing hardware or source appropriate fasteners
  • Inspect belt condition and replace if necessary during pulley installation
  • Ensure proper torque specifications are followed to avoid pulley misalignment
  • Check belt routing diagrams for correct installation on Ford E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty vehicles

Quality Assurance and Warranty

The Hayden Pulley 5999 meets or exceeds OEM standards, ensuring reliable performance and durability in demanding automotive environments. Manufactured from high-quality steel with precise dimensions, this pulley is engineered for long service life. While specific warranty details are not provided, Hayden products typically adhere to industry quality controls and are backed by manufacturer support for defects in materials and workmanship.

BrandHayden
Part Number5999
PositionPulley
Belt TypeFlat Back / Serpentine
Belt Width IN1.500
Belt Width MM38.0
Bore Dia. IN.67
ColorBlack
DescriptionIdler / Tensioner Pulley
Groove QuantitySmooth
I.D. MM17
Inside Diameter0.671875
MaterialSteel
Meets / Exceeds OEM?Yes
Mount Hole A Dia. MM17.000
Mount Hole Qty1
Mounting Hardware?Not Included
Mounting Hole Diameter0.665
Mounting Hole Quantity0.665
O.D. MM90.0
Outside Diameter3.500
Pulley TypeIdler Pulley
Pulley Width IN1.50
Pulley Width MM38.1
StyleIdler / Tensioner Pulley
TypePulley
Width38.1

This part fits 26 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2010FordE-350 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2010FordF-250 Super Duty6.4LV8N/Aw/ Dual Alternator; Pulley
2010FordF-350 Super Duty6.4LV8N/Aw/ Dual Alternator; Pulley
2009FordE-350 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2009FordF-250 Super Duty6.4LV8N/Aw/ Dual Alternator; Pulley
2009FordF-350 Super Duty6.4LV8N/Aw/ Dual Alternator; Pulley
2008FordE-350 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2008FordF-250 Super Duty6.4LV8N/Aw/ Dual Alternator; Pulley
2008FordF-350 Super Duty6.4LV8N/Aw/ Dual Alternator; Pulley
2007FordE-350 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2007FordF-250 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2007FordF-350 Super Duty6.0LV8N/ASmooth Pulley; Pulley
2006FordE-350 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2006FordF-250 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2006FordF-350 Super Duty6.0LV8N/ASmooth Pulley; Pulley
2005FordE-350 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2005FordExcursion6.0LV8N/ASmooth Pulley; Pulley
2005FordF-250 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2005FordF-350 Super Duty6.0LV8N/ASmooth Pulley; Pulley
2004FordE-350 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2004FordExcursion6.0LV8N/ASmooth Pulley; Pulley
2004FordF-250 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2004FordF-350 Super Duty6.0LV8N/Aw/ Dual Alternator; Pulley
2003FordExcursion6.0LV8N/ASmooth Pulley; Pulley
2003FordF-250 Super Duty6.0LV8N/ASmooth Pulley; Pulley
2003FordF-350 Super Duty6.0LV8N/ASmooth Pulley; 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:

3635439051390523C2E19A216AA3C2E19A216BA3C2Z8678AA3C3E19A216BB41965845999599983524589157A5625YS292YS313YS336

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.