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Roush Heavy Duty Belt Tensioner for 2005-2010 Ford Mustang (4.6L) - MPN 404225

$149.99

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Roush Heavy Duty Belt Tensioner for 2005-2010 Ford Mustang (4.6L) - MPN 404225

$149.99

$149.99

Fits select 2005-2010 Ford Mustang models including Base, Bullitt, GT, and Shelby GT500 variants (4.6L).

The Roush Heavy Duty Belt Tensioner is engineered to manage the increased rotational forces exerted on the Front End Accessory Drive (FEAD) in supercharged applications. Originally included as standard equipment in 2010 ROUSHcharger systems, this unit provides the necessary spring tension and structural rigidity to prevent belt slip and ensure consistent power delivery under high-load conditions.

This tensioner serves as a direct replacement for 2010 ROUSHcharger kits and is a recommended upgrade for all single-belt TVS R2300 ROUSH supercharger systems installed on 2005-2009 Mustang GT models. It is built to withstand the rigorous demands of high-performance driving while maintaining proper belt alignment.

  • Manufacturer Part Number: 404225
  • Designed for heavy-duty FEAD applications
  • Compatible with Roushcharger kits: #420026, #420027, and #420024
  • Engineered for 4.6L 3V and supercharged V8 configurations
  • Optimized for single-belt TVS R2300 supercharger setups
🔧 Fitment & Compatibility
Year Make Model Submodel
2005-2010 Ford Mustang Base
2008-2009 Ford Mustang Bullitt
2005-2010 Ford Mustang GT
2007-2008 Ford Mustang Shelby GT
2007-2010 Ford Mustang Shelby GT500
2008-2009 Ford Mustang Shelby GT500KR

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