HomeBelts and Cooling > Accessory Drive Belt System ComponentsGates 39051 Accessory Drive Belt Tensioner Assembly - Accessory Drive
Part #: 39051

Gates 39051 Accessory Drive Belt Tensioner Assembly - Accessory Drive

DriveAlign Premium OE Automatic Belt Tensioner, Accessory Drive
⚙️ 6 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦DriveAlign Premium OE Automatic Belt Tensioner, Accessory Drive
🚗Fitment: Ford, F-250 Super Duty and F-350 Super Duty
🔄Easy Returns — Return within 60 days for a full refund
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Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39051 is engineered for reliable accessory drive belt tension in Ford F-250 Super Duty and F-350 Super Duty trucks. Designed with durable steel construction, this tensioner assembly ensures consistent belt performance and longevity.

  • Constructed from high-strength steel for durability
  • Compatible with V-ribbed belt systems
  • Single pulley design without flange
  • Mounting hole quantity: 1 for straightforward installation
  • Outside diameter of pulley: 3.54 inches (90 mm)
  • Width of pulley: 1.46 inches (37 mm)
  • Bearing bore inside diameter: 0.67 inches (17 mm)
  • Includes tensioner assembly and mounting bolt
  • OE performance rating for reliable fit and function

Detailed Product Description

This accessory drive belt tensioner assembly from Gates is specifically designed to maintain optimal tension on V-ribbed belts in Ford F-250 Super Duty and F-350 Super Duty models. The tensioner features a single smooth contact surface pulley without flanges, measuring 3.54 inches in outside diameter and 1.46 inches in width, which supports proper belt alignment and reduces wear. The steel construction provides strength and resistance to operational stresses, while the bearing bore diameter of 0.67 inches (17 mm) ensures smooth rotation and durability. The product includes the tensioner assembly and the necessary mounting bolt for installation.

DriveAlign Premium OE Automatic Belt Tensioner Product Line

The DriveAlign Premium OE Automatic Belt Tensioner line by Gates focuses on delivering original equipment (OE) performance and fitment. This product line is engineered to meet or exceed factory specifications, providing consistent belt tension and reducing the risk of belt slippage or premature wear. The 39051 tensioner is part of this line, offering a direct replacement solution for Ford Super Duty trucks requiring reliable accessory drive belt tension management.

Common Applications and Issues Addressed

  • Maintains proper tension on V-ribbed accessory drive belts
  • Prevents belt slippage and associated accessory malfunctions
  • Reduces noise caused by loose or worn tensioners
  • Addresses premature belt wear due to improper tension
  • Supports smooth operation of alternator, power steering, and A/C components

Installation Notes and Tips

  • Ensure compatibility with Ford F-250 Super Duty and F-350 Super Duty models before installation
  • Use the included mounting bolt to secure the tensioner assembly
  • Inspect the belt and pulley surfaces for wear during installation
  • Follow vehicle manufacturer torque specifications for mounting hardware
  • Verify proper belt alignment and tension after installation

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39051 is manufactured to meet OE performance standards, ensuring reliable operation and durability. This product line is backed by Gates' quality control processes, providing confidence in fit and function. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandGates
Part Number39051
PositionDriveAlign Premium OE Automatic Belt Tensioner, Accessory Drive
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., Bolt
MaterialSteel
Mounting Hole Quantity1
OE Comparison RatingOE Performance
Outside Diameter3.54
Outside Diameter90
Outside Diameter (in)3.54
Outside Diameter (mm)90
Pulley 1 FlangedNo
Pulley 1 FlangedNo
Pulley Quantity1
Width1.46
Width37
Width (in)1.46
Width (mm)37

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2010FordF-250 Super Duty6.4LV8DIESELAccessory DriveDriveAlign Premium OE Automatic Belt Tensioner
2010FordF-350 Super Duty6.4LV8DIESELAccessory DriveDriveAlign Premium OE Automatic Belt Tensioner
2009FordF-250 Super Duty6.4LV8DIESELAccessory DriveDriveAlign Premium OE Automatic Belt Tensioner
2009FordF-350 Super Duty6.4LV8DIESELAccessory DriveDriveAlign Premium OE Automatic Belt Tensioner
2008FordF-250 Super Duty6.4LV8DIESELAccessory DriveDriveAlign Premium OE Automatic Belt Tensioner
2008FordF-350 Super Duty6.4LV8DIESELAccessory DriveDriveAlign 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:

39051419-002494187C3Z 6B209 A7C3Z 6B209 D7C3Z 6B209 E89657999825999825A

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