HomeBelts and Cooling > Accessory Drive Belt System ComponentsGates 39179 Accessory Drive Belt Tensioner Assembly
Part #: 39179

Gates 39179 Accessory Drive Belt Tensioner Assembly

DriveAlign Premium OE Automatic Belt Tensioner
38 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
DriveAlign Premium OE Automatic Belt Tensioner
Fitment: Ford, F-250 Super Duty, F-350 Super Duty, E-350 Super Duty, F-350, F-150, and Lobo
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Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 39179) is engineered to maintain optimal tension on the accessory drive belt system. Designed specifically for Ford vehicles including the E-350 Super Duty, F-150, F-250 Super Duty, F-350, and F-350 Super Duty, this tensioner assembly ensures reliable belt performance and longevity.

  • Constructed from durable steel for strength and longevity
  • Compatible with V-ribbed belt types
  • Features a single pulley without flange, measuring 2.99 inches (76 mm) in outside diameter
  • Mounting includes three holes for secure installation
  • Width of the pulley is 1.24 inches (31.5 mm)
  • Bearing bore inside diameter of 0.67 inches (17 mm) for precise fitment
  • OE exact comparison rating for direct replacement

DriveAlign Premium OE Automatic Belt Tensioner Product Line

The DriveAlign Premium OE Automatic Belt Tensioner line by Gates focuses on delivering original equipment quality and fitment. This product line is designed to meet or exceed factory specifications, providing a reliable tensioning solution for accessory drive belt systems. The 39179 tensioner assembly is part of this line, ensuring compatibility and performance for Ford Super Duty and F-Series trucks.

Detailed Product Description

This accessory drive belt tensioner assembly is made from steel, providing the necessary durability to withstand engine bay conditions. It is designed for use with V-ribbed belts, which are common in modern Ford trucks. The pulley has a smooth backside contact surface and is not flanged, which aligns with the original equipment design. The tensioner includes three mounting holes for secure attachment and features a bearing bore inside diameter of 0.67 inches (17 mm), ensuring precise alignment and smooth operation. The pulley width of 1.24 inches (31.5 mm) and outside diameter of 2.99 inches (76 mm) match OEM specifications for proper belt tracking and tension.

Common Applications and Issues Addressed

  • Maintains proper tension on the accessory drive belt to prevent slippage
  • Reduces belt noise caused by improper tension
  • Prevents premature belt wear and extends belt life
  • Eliminates issues related to belt misalignment
  • Restores proper function to accessory drive components such as alternator and power steering pump

Installation Notes and Tips

  • Ensure vehicle compatibility with Ford E-350 Super Duty, F-150, F-250 Super Duty, F-350, and F-350 Super Duty models
  • Verify belt type as V-ribbed before installation
  • Use proper tools to remove the old tensioner and install the new assembly securely using the three mounting holes
  • Check belt alignment and tension after installation to confirm correct operation

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 39179) is manufactured to meet original equipment standards, ensuring reliable performance and fitment. Gates products typically come with a limited warranty against defects in material and workmanship. For specific warranty details, refer to the product documentation or manufacturer guidelines.

BrandGates
Part Number39179
PositionDriveAlign Premium OE Automatic Belt Tensioner
Bearing Bore Inside Diameter.67
Bearing Bore Inside Diameter17
Bearing Bore Inside Diameter 1 (in).67
Bearing Bore Inside Diameter 1 (mm)17
Belt TypeV-Ribbed
Belt TypeV-Ribbed
Contact SurfaceSmooth/Backside
ContentsTensioner Assy.
MaterialSteel
Mounting Hole Quantity3
OE Comparison RatingOE Exact
Outside Diameter2.99
Outside Diameter76
Outside Diameter (in)2.99
Outside Diameter (mm)76
Pulley 1 FlangedNo
Pulley 1 FlangedNo
Pulley Quantity1
Width1.24
Width31.5
Width (in)1.24
Width (mm)31.5

This part fits 38 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2022FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2022FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2021FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2021FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2020FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2020FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2019FordE-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2019FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2019FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2018FordE-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2018FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2018FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2017FordE-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2017FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2017FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2016FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2016FordF-3506.2LV8GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2016FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2015FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2015FordF-3506.2LV8GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2015FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2014FordF-1506.2LV8GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2014FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2014FordF-3506.2LV8GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2014FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2013FordF-1506.2LV8GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2013FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2013FordF-3506.2LV8GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2013FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2012FordF-1506.2LV8GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2012FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2012FordF-3506.2LV8GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2012FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2011FordF-1506.2LV8GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2011FordF-250 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2011FordF-3506.2LV8GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2011FordF-350 Super Duty6.2LV8FLEXN/ADriveAlign Premium OE Automatic Belt Tensioner
2010FordF-1506.2LV8GASN/ADriveAlign Premium OE Automatic Belt Tensioner

* 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:

391794946589665999947999947AAL3E 6B209 AAAL3E 6B209 ABAL3E 6B209 ACAL3E 6B209 ADAL3Z 6B209 AAL3Z 6B209 BAL3Z 6B209 CBT134BT137BT96

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