Paxton Superchargers 8-Rib 3.75" Supercharger Drive Pulley (1986-1993 Mustang - Renegade Class) 4PFA038-375
8-Rib 3.75" Supercharger Pulley for Fox Body Mustang Renegade-Class Builds
The Paxton Superchargers 8-Rib 3.75" Supercharger Drive Pulley (PN 4PFA038-375) is engineered for 1986-1993 Ford Mustang applications competing in Renegade Class or similar high-load environments. This pulley is designed to provide improved belt engagement and rotational stability when used with 8-rib Paxton or Vortech centrifugal supercharger drive systems.
With a 3.75-inch diameter, this pulley allows precise supercharger speed tuning while maintaining the increased surface contact of an 8-rib belt layout - an essential requirement for high-RPM, high-load Fox Body Mustang builds where belt slip must be minimized.
Performance & Drive Characteristics
- 8-rib belt profile enhances traction and reduces belt slip
- 3.75" pulley diameter supports controlled supercharger speed changes
- Designed for competitive and off-road performance environments
- Ideal for Renegade Class and similar racing applications
Application & Compatibility
This supercharger pulley is intended for use with Paxton and Vortech centrifugal supercharger systems utilizing an 8-rib drive configuration on 1986-1993 Fox Body Mustang platforms.
Important Installation & Tuning Notes
- Custom ECM tuning and fuel system calibration are required when changing supercharger pulley sizes
- Incorrect pulley selection can result in excessive impeller speed and engine damage
- Professional calculation of impeller speed is strongly recommended
- Supercharger pulley changes may affect or void manufacturer warranty
Quick Specs
- Manufacturer: Paxton Superchargers
- Part Number: 4PFA038-375
- Pulley Diameter: 3.75"
- Belt Type: 8-Rib
- Application: 1986-1993 Ford Mustang
- Class Use: Renegade Class / Competition
Emissions & Legal Notice
- NOT AVAILABLE OR LEGAL FOR SALE IN CALIFORNIA
- For off-road and competition use only
- Not emissions legal for street-driven vehicles
Fitment
- 1986 Ford Mustang
- 1987 Ford Mustang
- 1988 Ford Mustang
- 1989 Ford Mustang
- 1990 Ford Mustang
- 1991 Ford Mustang
- 1992 Ford Mustang
- 1993 Ford Mustang
Why Buy from Beefcake Racing?
Beefcake Racing specializes in Fox Body Mustang supercharger systems and competition-grade driveline components. Whether you're dialing in a Renegade-class setup or refining belt control for a high-RPM build, our team helps ensure you choose the correct pulley for reliability and performance.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
