DORMAN 419-628 IDLER PULLEY (PULLEY ONLY) 2014-2019 GM 2500HD/3500HD 6.6L DURAMAX LML/L5P | 2014-2016 GM EXPRESS/SAVANA 2500/3500 6.6L DURAMAX LGH | 2013 GM EXPRESS/SAVANA 4500 6.6L DURAMAX LGH

Detailed Applications

Product Specifications

OE Numbers

The Dorman 419-628 Idler Pulley is a precision-engineered replacement part designed to restore the performance and functionality of accessory drive belt systems in select GM vehicles. Compatible with the 2014-2019 GM 2500HD/3500HD equipped with the 6.6L Duramax LML/L5P engines, as well as the 2014-2016 GM Express and Savana models, this idler pulley addresses common issues like noise from a worn pulley, ensuring a smooth and reliable operation.

Crafted to match the exact specifications of original equipment, this serpentine belt idler pulley serves as a direct replacement, seamlessly fitting into existing drive systems without the need for modifications. By reversing engineering the original design, Dorman guarantees an application-specific solution that meets the highest standards of performance. The idler pulley effectively mitigates annoying squealing or groaning noises, which can indicate a failed pulley, thereby restoring your vehicle’s efficiency and longevity.

Manufactured from durable steel with a thickness of 2.3 mm, this product offers robustness that withstands the rigors of daily driving. The pulley features an outside diameter of 76 mm, an inside diameter of 45 mm, and a width of 32.2 mm—all critical dimensions for ensuring a perfect fit. Absent of included mounting hardware, the design prioritizes simplicity and compatibility without compromising quality.

Backed by a dedicated team of engineers and quality specialists based in the United States, the Dorman 419-628 Idler Pulley is more than just a replacement part; it’s a testament to reliable craftsmanship and performance enhancement. Secure a smoother, quieter ride with this essential component engineered for specific GM vehicle models, ensuring reliability on every journey.