HomeBelts and Cooling > Accessory Drive Belt System ComponentsGates 38127 Accessory Drive Belt Tensioner Assembly
Part #: 38127

Gates 38127 Accessory Drive Belt Tensioner Assembly

DriveAlign Premium OE Automatic Belt Tensioner
⚙️ 35 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦DriveAlign Premium OE Automatic Belt Tensioner
🚗Fitment: Ford and Mercury, Mustang, Thunderbird, and Cougar
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Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 38127) is engineered for reliable performance in Ford and Mercury vehicles. Designed specifically for models like the Mustang, Cougar, and Thunderbird, this tensioner assembly ensures proper accessory drive belt tension and alignment.

  • Thermoplastic construction for durability and heat resistance
  • Single flanged pulley with a 2.99 inch (76 mm) outside diameter
  • V-ribbed grooved contact surface with 6 grooves for optimal belt engagement
  • Bearing bore inside diameter of 0.67 inch (17 mm) for precise fitment
  • Width of 0.98 inch (25 mm) to accommodate V-ribbed belts
  • One mounting hole for secure installation

Detailed Product Features and Specifications

This accessory drive belt tensioner assembly is constructed from thermoplastic material, providing resistance to wear and thermal degradation common in engine compartments. The pulley features a flanged design to maintain belt alignment and reduce slippage. With a 6-groove V-ribbed contact surface, it is compatible with V-ribbed belts used in the accessory drive systems of Ford Mustang, Mercury Cougar, and Thunderbird models. The bearing bore inside diameter measures 0.67 inches (17 mm), ensuring a precise fit on the shaft. The overall pulley width is 0.98 inches (25 mm), and the outside diameter is 2.99 inches (76 mm), matching original equipment specifications.

About the DriveAlign Premium OE Automatic Belt Tensioner Line

The DriveAlign Premium OE Automatic Belt Tensioner line by Gates focuses on delivering exact OE fit and function. This product line is designed to meet or exceed original equipment standards, providing consistent belt tension and alignment to extend belt life and maintain accessory drive system performance. Part number 38127 is an OE exact replacement, ensuring compatibility and reliability for Ford and Mercury vehicles.

Common Applications and Problem Solving

  • Maintains proper tension on V-ribbed accessory drive belts
  • Prevents belt slippage and misalignment in Ford Mustang, Mercury Cougar, and Thunderbird
  • Reduces noise caused by worn or loose belts
  • Helps avoid premature belt wear and accessory component damage
  • Restores smooth operation of alternator, power steering, and air conditioning belts

Installation Notes and Tips

  • Ensure the mounting surface is clean and free of debris before installation
  • Verify the bearing bore diameter matches the shaft for a secure fit
  • Use proper torque specifications for the single mounting hole to avoid tensioner misalignment
  • Inspect the V-ribbed belt for wear and replace if necessary during installation
  • Confirm pulley flange is properly seated to maintain belt tracking

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 38127) is manufactured to meet stringent quality standards. It is designed as an OE exact replacement for Ford and Mercury vehicles, ensuring reliable performance and durability. While specific warranty details are not provided here, Gates products typically come with a limited warranty covering defects in materials and workmanship.

BrandGates
Part Number38127
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 SurfaceV-Ribbed Grooved
ContentsTensioner Assy.
Groove Quantity6
MaterialThermoplastic
Mounting Hole Quantity1
Number of Grooves6
OE Comparison RatingOE Exact
Outside Diameter2.99
Outside Diameter76
Outside Diameter (in)2.99
Outside Diameter (mm)76
Pulley 1 FlangedYes
Pulley 1 FlangedYes
Pulley Quantity1
Width.98
Width25
Width (in).98
Width (mm)25

This part fits 35 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2004FordMustang3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2004FordMustang3.9LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2003FordMustang3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2002FordMustang3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2001FordMustang3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
2000FordMustang3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1999FordMustang3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1998FordMustang3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1997FordMustang3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1997FordThunderbird3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1997MercuryCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1996FordMustang3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1996FordThunderbird3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1996MercuryCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1995FordMustang3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1995FordThunderbird3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1995MercuryCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1994FordCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1994FordMustang3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1994FordThunderbird3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1994MercuryCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1993FordCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1993FordThunderbird3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1993MercuryCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1992FordCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1992FordThunderbird3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1992MercuryCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1991FordCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1991FordThunderbird3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1991MercuryCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1990FordCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1990FordThunderbird3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1990MercuryCougar3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1989FordThunderbird3.8LV6GASN/ADriveAlign Premium OE Automatic Belt Tensioner
1989MercuryCougar3.8LV6GASN/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:

1802473052473512738127419-208458734922789247999100999100AE8SZ 6B209 AE9SE 6B209 DE9SE 6B209 DBE9SE 6B209 DCE9SE 6B209 GAE9SZ 6B209 DF4SE 6B209 CAF4SZ 6B209 BXR3E 6B209 CB

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