OE Quality
60-Day Returns

Gates 38731 Accessory Drive Belt Tensioner Assembly
Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner 38731
The Gates DriveAlign Premium OE Automatic Belt Tensioner 38731 is engineered to maintain optimal tension on V-ribbed accessory drive belts. Designed with durable steel construction and precise dimensions, this tensioner assembly supports reliable belt operation in various vehicle makes and models requiring exact OE fitment.
- Constructed from high-strength steel for durability
- Single pulley design without flange for smooth belt tracking
- Compatible with V-ribbed belt types
- Mounting hole quantity: 1 for secure installation
- Dimensions: 150 mm (5.9 in) outside diameter, 50 mm (2 in) width
- Bearing bore inside diameter: 30 mm (1.18 in)
- Contact surface is smooth on the backside to reduce belt wear
- OE comparison rating: exact fit to original equipment specifications
Detailed Product Description
The Gates DriveAlign Premium OE Automatic Belt Tensioner 38731 is a precision-engineered accessory drive belt tensioner assembly designed to maintain consistent tension on V-ribbed belts. Its steel construction ensures long-lasting performance under demanding engine conditions. The tensioner features a single pulley without a flange, measuring 150 mm in outside diameter and 50 mm in width, which aligns with original equipment specifications. The bearing bore inside diameter of 30 mm (1.18 inches) supports smooth rotation and reduces wear on the belt system. This tensioner assembly is designed for vehicles that require an exact OE replacement part, ensuring compatibility and reliable operation.
DriveAlign Premium OE Automatic Belt Tensioner Product Line
The DriveAlign Premium OE Automatic Belt Tensioner line by Gates focuses on delivering tensioner assemblies that meet or exceed original equipment standards. This product line emphasizes precise fitment, durable materials, and smooth operation to support accessory drive belt systems in a variety of automotive applications. The 38731 part number is part of this line, offering a direct OE replacement with consistent performance and longevity.
Common Applications and Issues Addressed
- Maintains proper tension on V-ribbed accessory drive belts
- Prevents belt slippage and noise caused by improper tension
- Reduces premature belt wear and extends belt life
- Eliminates issues related to belt misalignment or pulley damage
- Supports smooth operation of engine accessories such as alternators and power steering pumps
Installation Notes and Tips
- Ensure the mounting surface is clean and free of debris before installation
- Verify the belt type is V-ribbed and matches the tensioner specifications
- Use proper torque specifications for the single mounting hole to avoid damage
- Inspect the belt and other drive components for wear during installation
- Follow vehicle-specific service manual instructions for tensioner replacement
Quality Assurance and Warranty
The Gates DriveAlign Premium OE Automatic Belt Tensioner 38731 is manufactured to meet strict quality standards, ensuring reliable performance and durability. This part carries an OE comparison rating indicating it matches original equipment specifications. While specific warranty details are not provided here, Gates products typically come with manufacturer-backed warranties to protect against defects in materials and workmanship.
| Brand | Gates |
| Part Number | 38731 |
| Material | Steel |
| Pulley 1 Flanged | No |
| Bearing Bore Inside Diameter | 1.18 |
| Bearing Bore Inside Diameter | 30 |
| Width | 2 |
| Width | 50 |
| Outside Diameter | 150 |
| Outside Diameter | 5.9 |
| Mounting Hole Quantity | 1 |
| Belt Type | V-ribbed |
| Pulley Quantity | 1 |
| Bearing Bore Inside Diameter 1 (in) | 1.18 |
| Bearing Bore Inside Diameter 1 (mm) | 30 |
| Belt Type | V-ribbed |
| Contact Surface | Smooth/backside |
| Contents | Tensioner assy. |
| OE Comparison Rating | Oe exact |
| Outside Diameter (in) | 5.9 |
| Outside Diameter (mm) | 150 |
| Pulley 1 Flanged | No |
| Width (in) | 2 |
| Width (mm) | 50 |
This part fits 0 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.