SKU #: DMAX-UBT-0216 MPN #: DMAX-UBT-0216

DmaxStore Upgraded Belt Tensioner 02-24 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML/L5P

$159.99
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Description Overview
Stop worrying about the factory plastic pulley failing and leaving your Duramax stranded with the DmaxStore Upgraded Belt Tensioner. Designed as a direct replacement for the original tensioner, this upgraded unit replaces the failure-prone factory plastic pulley with a Made in USA 6061-T6 billet aluminum pulley built for significantly greater durability and long-term reliability. A failed factory pulley can come apart and potentially damage surrounding components in the engine bay, making this a worthwhile upgrade for trucks that see high mileage, heavy towing, or simply need a more dependable belt tensioner. Each tensioner is fully assembled with the billet pulley pre-installed and requires no modifications for installation. The primary/AC compressor/power steering belt tensioner. Both versions use the same 6061-T6 billet pulley upgrade and are engineered specifically for their respective Duramax applications.
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An upgraded belt tensioner that replaces the factory plastic pulley with a USA-made 6061-T6 billet aluminum pulley for greater durability.

Fits
2002-2024 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML/L5P
Brand
DMAXStore
Best for
Trucks facing high mileage, heavy towing, or needing a more dependable belt tensioner
Key features
  • Direct replacement for the original tensioner
  • USA-made 6061-T6 billet aluminum pulley replaces failure-prone plastic pulley
  • Built for greater durability and long-term reliability
  • Fully assembled with pulley pre-installed
  • Requires no modifications for installation
  • Available for primary and AC compressor/power steering belt tensioner applications
Key specs
  • 6061-T6 billet aluminum

Summarized by AI from this product’s description and specs. Confirm fitment for your year, make and engine before ordering.

Stop worrying about the factory plastic pulley failing and leaving your Duramax stranded with the DmaxStore Upgraded Belt Tensioner. Designed as a direct replacement for the original tensioner, this upgraded unit replaces the failure-prone factory plastic pulley with a Made in USA 6061-T6 billet aluminum pulley built for significantly greater durability and long-term reliability. A failed factory pulley can come apart and potentially damage surrounding components in the engine bay, making this a worthwhile upgrade for trucks that see high mileage, heavy towing, or simply need a more dependable belt tensioner.

Each tensioner is fully assembled with the billet pulley pre-installed and requires no modifications for installation. The primary/AC compressor/power steering belt tensioner. Both versions use the same 6061-T6 billet pulley upgrade and are engineered specifically for their respective Duramax applications.

Vehicle Fitment
2002-2024 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML/L5P
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
About DMAXStore

DmaxStore is dedicated to one thing: helping GMC and Chevy Duramax diesel owners get the most out of their trucks. Since 2007, DmaxStore has built its reputation around Duramax-specific parts, performance upgrades, replacement components, and technical knowledge for diesel truck enthusiasts.

Rather than trying to cover every make and model, DmaxStore focuses specifically on the Duramax platform. That specialization allows the company to carefully select products for their quality, performance, fitment, and value while providing customers with knowledgeable support when choosing parts for their trucks.

Duramax Parts From People Who Know Duramax Trucks

DmaxStore was founded after its owner spent seven years working for one of the largest GM dealers in the United States, where he earned the GM Mark of Excellence award. That experience helped establish the foundation for a business centered entirely around the GMC and Chevy Duramax diesel community.

Today, DmaxStore offers parts and upgrades covering a wide range of Duramax applications, from the original LB7 through the latest generations of the L5P, along with Duramax-powered Colorado and Canyon applications. Their product selection includes everything from maintenance and replacement parts to fuel-system upgrades, suspension components, drivetrain parts, steering upgrades, engine performance products, and more.

Performance, Replacement & Upgrade Parts

Whether you're maintaining a high-mileage Duramax, restoring an older Silverado or Sierra, or building a truck for increased performance, DmaxStore offers products designed around the needs of diesel truck owners.