American Racing Solutions Street Performance Belt Tensioner (ARS9935B) - 2000-2004 Mustang / Mach 1
Upgrade your supercharged Mustang with the American Racing Solutions Street Performance Belt Tensioner, engineered to handle the increased stress of high horsepower and boost levels. Designed specifically for 2000-2004 Mustang GT and Mach 1 applications, this tensioner delivers improved belt control, reduced slip, and more consistent power delivery.
Unlike factory cast units, this tensioner is precision machined from 6061-T6 billet aluminum for superior strength and durability. Internally, it features a TGP shaft, hardened bushings, proprietary spring, and thrust bearings to ensure smooth operation and long-term reliability. Tested on both the dyno and track, this tensioner helps reduce or eliminate belt slip, allowing your supercharger system to maintain consistent boost and maximize performance.
Performance and Reliability
This upgraded tensioner is designed to maintain proper belt tension under load, making it ideal for street and performance builds running forced induction. It delivers improved belt stability and reliability compared to the factory unit.
Direct Bolt-On Upgrade
Engineered as a direct replacement, this tensioner installs without the need for brackets, adapters, or modifications. It provides a simple upgrade path for improved performance.
Pulley Options
This listing is for the tensioner only. Pulleys are sold separately and available in 70mm or 76mm smooth configurations. Optional ceramic bearing upgrades are also available for maximum efficiency.
Features
- Designed for 2000-2004 Mustang GT and Mach 1 applications
- Machined from 6061-T6 billet aluminum for superior strength
- Internal TGP shaft, hardened bushings, and proprietary spring
- Thrust bearings for smooth and consistent operation
- Reduces or eliminates belt slip to improve boost and horsepower
- Direct bolt-on replacement with no modifications required
- Black anodized finish for durability and corrosion resistance
- Tested on dyno and track for proven performance
- Compatible with optional 70mm or 76mm smooth pulleys (sold separately)
- Optional ceramic hybrid bearing upgrade available
- Lifetime guarantee against bending or breaking under normal use
Ceramic Bearing Benefits
- Up to 40 percent lighter than steel balls for reduced rotational mass
- Operates up to 50 percent faster than conventional bearings
- Reduced friction and rolling resistance for improved efficiency
- Significantly longer service life and durability
- Lower heat generation at high RPM
- Improved resistance to corrosion and thermal expansion
Additional Notes
- Tensioner only, pulley sold separately
- Select appropriate pulley size for your application
- Designed for street and performance supercharged setups
Fitment
- 2000 Ford Mustang GT (Engine Code X)
- 2001 Ford Mustang GT (Engine Code X)
- 2002 Ford Mustang GT (Engine Code X)
- 2003 Ford Mustang GT (Engine Code X)
- 2004 Ford Mustang GT (Engine Code X)
- 2003 Ford Mustang Mach 1 (Engine Code R)
- 2004 Ford Mustang Mach 1 (Engine Code R)
- 2003 Ford Mustang SVT Cobra 10th Anniversary (Engine Code Y)
- 2004 Ford Mustang SVT Cobra (Engine Code Y)
- 2000 Ford Crown Victoria V8 (Engine Code 9)
- 2001 Ford Crown Victoria V8 (Engine Code 9)
- 2002 Ford Crown Victoria V8 (Engine Code 9)
- 2003 Ford Crown Victoria V8 (Engine Code 9)
- 2004 Ford Crown Victoria V8 (Engine Code 9)
- 2005 Ford Crown Victoria V8 (Engine Code 9)
- 2000 Ford Crown Victoria V8 (Engine Code W)
- 2001 Ford Crown Victoria V8 (Engine Code W)
- 2002 Ford Crown Victoria V8 (Engine Code W)
- 2003 Ford Crown Victoria V8 (Engine Code W)
- 2004 Ford Crown Victoria V8 (Engine Code W)
- 2005 Ford Crown Victoria V8 (Engine Code W)
- 2006 Ford Crown Victoria V8 (Engine Code W)
- 2007 Ford Crown Victoria V8 (Engine Code W)
- 2008 Ford Crown Victoria V8 (Engine Code W)
- 2009 Ford Crown Victoria V8 (Engine Code W)
- 2010 Ford Crown Victoria V8 (Engine Code W)
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