HomeBelts and Cooling > Accessory Drive Belt System ComponentsDorman 419-002 Accessory Drive Belt Tensioner Assembly
Part #: 419-002

Dorman 419-002 Accessory Drive Belt Tensioner Assembly

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⚙️ 6 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford, F-250 Super Duty and F-350 Super Duty
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Overview of Dorman Accessory Drive Belt Tensioner Assembly

The Dorman 419-002 accessory drive belt tensioner assembly is engineered for reliable performance in Ford F-250 Super Duty and F-350 Super Duty trucks. Designed to maintain proper tension on serpentine belts, this tensioner assembly helps ensure smooth operation of your vehicle's accessory drive system.

  • Compatible with Ford F-250 Super Duty and F-350 Super Duty models
  • Part number 419-002 for precise identification
  • Single steel pulley with a 90 mm outside diameter
  • Counterclockwise tensioner rotation for correct belt alignment
  • Includes one pulley bearing with a 40 mm diameter
  • Designed for serpentine belt systems with no grooves on the pulley

Technical Specifications and Features

This accessory drive belt tensioner assembly features a steel pulley measuring 90 mm in outside diameter and 35.6 to 37.2 mm in width, providing durability and consistent belt engagement. The pulley contains a single bearing with a 40 mm diameter, ensuring smooth rotation and reduced wear. The tensioner rotates counterclockwise, matching the belt routing requirements of compatible Ford Super Duty trucks. The assembly is designed specifically for serpentine belt systems, which are common in modern Ford F-250 and F-350 models.

Application and Compatibility

The Dorman 419-002 tensioner assembly is compatible with Ford F-250 Super Duty and F-350 Super Duty trucks, making it a suitable replacement part for maintaining the accessory drive belt system. This part is essential for vehicles equipped with serpentine belts, ensuring proper tension and alignment to prevent belt slippage or premature wear.

  • Prevents belt slippage and noise
  • Maintains proper belt tension to avoid accessory drive failure
  • Reduces wear on serpentine belts and pulleys
  • Helps avoid engine overheating caused by accessory belt issues
  • Addresses issues related to belt misalignment and tensioner wear

Installation Notes and Tips

When installing the Dorman 419-002 accessory drive belt tensioner assembly, ensure the tensioner rotation matches the original part, which is counterclockwise for these Ford models. Verify the pulley dimensions and bearing condition before installation. It is recommended to inspect the serpentine belt for wear and replace it if necessary during the tensioner replacement. Proper torque specifications should be followed to secure the tensioner assembly.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable fit and function. The 419-002 tensioner assembly undergoes rigorous quality control to ensure durability and performance in demanding conditions. This part comes with a limited warranty covering defects in material and workmanship, offering peace of mind for your Ford F-250 Super Duty or F-350 Super Duty maintenance needs.

BrandDorman
Part Number419-002
Belt TypeSerpentine
Inside Diameter20
Number of Pulley Bearings1
Outside Diameter90
Package ContentsBelt Tensioner
Pulley Bearing Diameter (mm)40 mm
Pulley MaterialSteel
Pulley Quantity1
Tensioner RotationCC (Counter Clockwise)
Width35.6
Width37.2

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2010FordF-250 Super Duty6.4LV8N/Aw/Extra Heavy Duty Alternator
2010FordF-350 Super Duty6.4LV8N/Aw/Extra Heavy Duty Alternator
2009FordF-250 Super Duty6.4LV8N/Aw/Extra Heavy Duty Alternator
2009FordF-350 Super Duty6.4LV8N/Aw/Extra Heavy Duty Alternator
2008FordF-250 Super Duty6.4LV8N/Aw/Extra Heavy Duty Alternator
2008FordF-350 Super Duty6.4LV8N/Aw/Extra Heavy Duty Alternator

* 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:

39051457414941857417C3Z6B209E89657

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