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Continental 50021 Accessory Drive Belt Idler Pulley - Accessory Drive, Accessory Drive (Right) or Lower
Reliable Accessory Drive Belt Idler Pulley for Select GM and Saab Models
The Continental 50021 accessory drive belt idler pulley is engineered to maintain proper belt tension and routing in various Buick, Chevrolet, GMC, and Saab vehicles. Designed with durable steel construction and precise dimensions, this pulley supports smooth operation of the accessory drive system.
- Pulley outside diameter constructed from steel for durability
- Non-flanged pulley surface type with a smooth groove
- Pulley width measures 2.75 inches for optimal belt alignment
- Mount hole diameter of 1.21 inches ensures secure fitment
- Includes bolt, dust shield, and washer components for assembly
Detailed Product Description
The Continental 50021 accessory drive belt idler pulley features a non-flanged, smooth pulley surface designed to reduce belt wear and maintain consistent tension. The pulley’s steel outside diameter provides strength and resistance to deformation under load. With a width of 2.75 inches and a mount hole diameter of 1.21 inches, this pulley is engineered for precise fitment and reliable performance. The included bolt, dust shield, and washer components contribute to the overall stability and protection of the pulley assembly.
Compatible Vehicles and Applications
This idler pulley is compatible with a range of vehicles including Buick LaCrosse and Regal, Chevrolet Captiva Sport, Equinox, Silverado 2500 HD and 3500 HD, GMC Sierra 2500 HD and 3500 HD, Terrain, and Express 2500 and 3500 models, as well as the Saab 9-5. It is designed to support the accessory drive belt system by maintaining proper belt tension and alignment.
- Prevents belt slippage and misalignment
- Reduces noise caused by worn or damaged pulleys
- Helps avoid premature belt wear or failure
- Supports smooth operation of alternator, power steering, and other accessories
- Addresses issues related to belt tension loss or pulley damage
Installation Notes and Tips
Ensure the pulley mount hole diameter of 1.21 inches matches the vehicle’s mounting point before installation. Verify the pulley width and outside diameter are compatible with the existing belt system. Proper torque specifications should be followed when securing the bolt to avoid over-tightening or loosening during operation. Inspect the dust shield and washer components for correct placement to protect the pulley from debris and ensure longevity.
Quality Assurance and Warranty
Continental manufactures the 50021 accessory drive belt idler pulley to meet OEM standards for fit, form, and function. The steel construction and included components are designed for durability and reliable performance in demanding automotive environments. Warranty information is available through Continental and should be confirmed at the time of purchase.
| Brand | Continental |
| Part Number | 50021 |
| Pulley 1 Flanged | 0.670 |
| Component Type | Bolt |
| Component Type | Dust sheild |
| Component Type | N |
| Component Type | Washer |
| Pulley 1 Outside Diameter | Steel |
| Pulley 1 Width | 2.75 |
| Pulley 1 Mount Hole Diameter | 1.21 |
| Pulley 1 Groove Quantity | Smooth |
| Pulley Surface Type | Non-flanged |
This part fits 55 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2025 | GMC | Sierra 2500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2025 | GMC | Sierra 3500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2023 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2023 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2023 | GMC | Sierra 2500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2023 | GMC | Sierra 3500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2022 | Chevrolet | Express 2500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2022 | Chevrolet | Express 3500 | 6.6L | V8 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2022 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2022 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2022 | GMC | Savana 2500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2022 | GMC | Savana 3500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2022 | GMC | Sierra 2500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2022 | GMC | Sierra 3500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2021 | Chevrolet | Express 2500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2021 | Chevrolet | Express 3500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2021 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2021 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2021 | GMC | Savana 2500 | 6.6L | V8 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2021 | GMC | Savana 3500 | 6.6L | V8 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2021 | GMC | Sierra 2500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2021 | GMC | Sierra 3500 HD | 6.6L | V8 | FLEX | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2020 | Chevrolet | Express 2500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2020 | Chevrolet | Express 3500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2020 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | GAS | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2020 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | GAS | Accessory Drive | Smooth Pulley, Includes Hardware |
| 2020 | GMC | Savana 2500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2020 | GMC | Savana 3500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2020 | GMC | Sierra 2500 HD | 6.6L | V8 | GAS | Lower | Smooth Pulley, Includes Hardware |
| 2020 | GMC | Sierra 3500 HD | 6.6L | V8 | GAS | Lower | Smooth Pulley, Includes Hardware |
| 2019 | Chevrolet | Express 2500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2019 | Chevrolet | Express 3500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2019 | GMC | Savana 2500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2019 | GMC | Savana 3500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2018 | Chevrolet | Express 2500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2018 | Chevrolet | Express 3500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2018 | GMC | Savana 2500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2018 | GMC | Savana 3500 | 4.3L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2017 | GMC | Terrain | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2016 | GMC | Terrain | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2015 | Chevrolet | Captiva Sport | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2015 | Chevrolet | Captiva Sport | 3.0L | V6 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2015 | Chevrolet | Equinox | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2015 | GMC | Terrain | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2014 | Chevrolet | Captiva Sport | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2013 | Buick | Regal | 2.0L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2013 | Chevrolet | Captiva Sport | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2012 | Buick | Regal | 2.0L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2012 | Chevrolet | Captiva Sport | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2011 | Buick | LaCrosse | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2011 | Buick | Regal | 2.0L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2011 | Buick | Regal | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2011 | Chevrolet | Captiva Sport | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2011 | Saab | 9-5 | 2.0L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware | |
| 2010 | Buick | LaCrosse | 2.4L | L4 | Accessory Drive | Smooth Pulley, Includes Hardware |
* 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.