American Racing Solutions HEMI Racing Belt Tensioner (ARS6500A) - 2004+ Dodge HEMI 5.7L / 6.1L / 6.4L

Take your supercharged HEMI build to the next level with the American Racing Solutions Racing Belt Tensioner. Designed for high-horsepower applications, this upgraded tensioner delivers the strength and reliability needed to handle extreme boost and aggressive racing conditions where factory components fall short.

Machined from 6061-T6 billet aluminum and engineered with nearly three times the spring tension of the OEM unit, this tensioner maintains proper belt tension under load to reduce or eliminate slip. The result is more consistent boost, improved power delivery, and increased reliability. Built with premium internal components and proven on both the dyno and track, this is a must-have upgrade for serious performance builds.

Performance and Reliability

This tensioner is specifically engineered for high-output HEMI engines running forced induction. With a 50 lb spring and reinforced internal components, it is capable of maintaining belt control in applications exceeding 1000 horsepower.

Premium Construction

Unlike factory cast units, this tensioner is precision machined from billet aluminum and features a TGP shaft, hardened bushings, proprietary spring, and thrust bearings. These components work together to provide smooth operation, increased strength, and long-term durability.

Features

• Designed for 5.7L, 6.1L, and 6.4L HEMI engines
• Compatible with supercharged Charger, Challenger, and Grand Cherokee
• Machined from 6061-T6 billet aluminum for maximum strength
• 50 lb spring tension for superior belt control
• Nearly 3x stronger than factory tensioner
• Internal TGP shaft, hardened bushings, and thrust bearings
• Reduces or eliminates belt slip for increased boost and horsepower
• Includes 70mm billet pulley
• Direct bolt-on replacement with no modifications required
• Tested on dyno and track for proven performance
• Lifetime guarantee against bending or breaking
• Optional ceramic hybrid bearing upgrade available

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

- Recommended for high horsepower and race applications
- Ideal for builds exceeding 1000 horsepower
- Designed to improve belt stability in high boost environments

Fitment

- 2004 Dodge Charger 5.7L HEMI
- 2005 Dodge Charger 5.7L HEMI
- 2006 Dodge Charger 5.7L HEMI
- 2007 Dodge Charger 5.7L HEMI
- 2008 Dodge Charger 5.7L HEMI
- 2009 Dodge Charger 5.7L HEMI
- 2010 Dodge Charger 5.7L HEMI
- 2011 Dodge Charger 5.7L HEMI
- 2012 Dodge Charger 5.7L HEMI
- 2013 Dodge Charger 5.7L HEMI
- 2014 Dodge Charger 5.7L HEMI
- 2015 Dodge Charger 5.7L HEMI
- 2016 Dodge Charger 5.7L HEMI
- 2017 Dodge Charger 5.7L HEMI
- 2018 Dodge Charger 5.7L HEMI
- 2019 Dodge Charger 5.7L HEMI
- 2020 Dodge Charger 5.7L HEMI
- 2021 Dodge Charger 5.7L HEMI
- 2022 Dodge Charger 5.7L HEMI
- 2023 Dodge Charger 5.7L HEMI
- 2005 Dodge Challenger 5.7L HEMI
- 2006 Dodge Challenger 5.7L HEMI
- 2007 Dodge Challenger 5.7L HEMI
- 2008 Dodge Challenger 5.7L HEMI
- 2009 Dodge Challenger 5.7L HEMI
- 2010 Dodge Challenger 5.7L HEMI
- 2011 Dodge Challenger 5.7L HEMI
- 2012 Dodge Challenger 5.7L HEMI
- 2013 Dodge Challenger 5.7L HEMI
- 2014 Dodge Challenger 5.7L HEMI
- 2015 Dodge Challenger 5.7L HEMI
- 2016 Dodge Challenger 5.7L HEMI
- 2017 Dodge Challenger 5.7L HEMI
- 2018 Dodge Challenger 5.7L HEMI
- 2019 Dodge Challenger 5.7L HEMI
- 2020 Dodge Challenger 5.7L HEMI
- 2021 Dodge Challenger 5.7L HEMI
- 2022 Dodge Challenger 5.7L HEMI
- 2023 Dodge Challenger 5.7L HEMI
- Jeep Grand Cherokee 5.7L, 6.1L, 6.4L HEMI (verify application)

CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov