DMS Wide LT4 Tensioner Pulley – Fix Belt Walk & Squeal for Good

If you’ve noticed belt squeal, chirping, or even found a rib missing on your LT4 supercharger belt, chances are the OEM tensioner pulley is to blame. Dedicated Motorsports has engineered a reliable, performance-driven solution: the Wide LT4 Tensioner Pulley. Designed to address a common (yet overlooked) flaw in all factory LT4 setups—including CTS-V, Z06, and ZL1—this upgrade improves belt tracking, reduces wear, and eliminates side-to-side pulley play.

Why You Need It:

• Fixes Belt Misalignment: OEM single-row bearings allow radial movement, causing the belt to walk or ride the edge of the pulley under load.
• Prevents Belt Damage: Wider pulley surface helps keep the belt centered, reducing risk of rib separation or premature wear.
• Reduces Squeal & Noise: Eliminates annoying belt squeaks and chirps caused by unstable factory pulley design.

Key Features:

• CNC Machined 6061 Aluminum Body for strength and lightweight performance.
• 42mm Wide Design – 10mm wider than stock to improve belt stability.
• 70mm Diameter – matches stock pulley for easy installation.
• Dual-Row High RPM NSK Bearing – adds crucial radial support for consistent belt alignment under boost.
• Anodized Finish for corrosion resistance and durability.
• Spirol Lock Ring – precision balanced for high-speed operation.

Compatibility:

• Works with all LT4-powered vehicles, including:
• 2016-2019 Cadillac CTS-V (Gen 3)
• 2015-2019 C7 Z06 Corvette
• 2017-2024 Camaro ZL1

Installation Notes:

• Reuse OEM Bolt – Yes
• OEM Dust Shield Compatible – No
• Installation Guide Included

Don’t let a small pulley cause big problems. Upgrade to the DMS Wide LT4 Tensioner Pulley and gain the confidence of a quiet, reliable, and track-ready belt system.