American Racing Solutions 4.2 Inch 10 Rib Billet Water Pump Pulley 3 Bolt (ARS4.2W3) - 2011+ Mustang GT 5.0L

Upgrade your engine’s accessory drive system with the American Racing Solutions 4.2 inch 10 rib Billet Water Pump Pulley. Designed for 2011 and newer Mustang GT 5.0L applications, this pulley delivers improved strength, durability, and performance for both street and high-performance builds.

Precision machined from 6061-T6 billet aluminum, this pulley provides superior strength over factory components while maintaining a lightweight design. The black anodized finish creates a hardened surface for increased wear resistance and long-term reliability in demanding conditions.

Performance and Construction

This 4.2 inch pulley features a 10 rib design for increased belt contact and improved grip under load. The billet construction reduces rotational mass while maintaining the strength needed for high RPM applications.

Features

• 4.2 inch diameter water pump pulley
• 10 rib design for enhanced belt engagement and stability
• 3 bolt mounting configuration
• Machined from high-quality 6061-T6 billet aluminum
• Black anodized finish for durability and corrosion resistance
• Lightweight design reduces rotational mass
• Designed for street and high-performance applications

Fitment

- 2011 Ford Mustang GT 5.0L
- 2012 Ford Mustang GT 5.0L
- 2013 Ford Mustang GT 5.0L
- 2014 Ford Mustang GT 5.0L
- 2015 Ford Mustang GT 5.0L
- 2016 Ford Mustang GT 5.0L
- 2017 Ford Mustang GT 5.0L
- 2018 Ford Mustang GT 5.0L
- 2019 Ford Mustang GT 5.0L
- 2020 Ford Mustang GT 5.0L
- 2021 Ford Mustang GT 5.0L
- 2022 Ford Mustang GT 5.0L
- 2023 Ford Mustang GT 5.0L
- 2024 Ford Mustang GT 5.0L
- 2025 Ford Mustang GT 5.0L
- 2026 Ford Mustang GT 5.0L

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