Vortech 4.6"/8.0" 10-Rib Crank Pulley (1986-1993 Mustang) 4FA018-028
10-Rib Crank Pulley for Vortech-Supercharged Fox Body Mustang 5.0L
The Vortech Superchargers 4.6"/8.0" 10-Rib Crank Pulley (PN 4FA018-028) is a heavy-duty crankshaft pulley engineered for 1986-1993 Ford Mustang 5.0L applications using Vortech supercharger drive systems. Featuring a 10-rib serpentine belt interface, this pulley is designed to provide maximum belt traction and drive stability in high-boost, high-RPM environments.
The dual-diameter configuration (4.6" / 8.0") allows compatibility with multiple Fox Body accessory drive layouts and Vortech supercharger configurations. The wider 10-rib belt profile significantly increases belt contact area, helping reduce belt slip and maintain consistent supercharger speed under aggressive operating conditions.
Built for High-Boost Serpentine Drive Systems
This crank pulley is manufactured to Vortech's exacting standards for forced-induction use. Precision machining ensures proper balance, alignment, and long-term reliability when subjected to the added loads of supercharged Fox Body Mustang applications.
Key Features
- Designed specifically for Vortech supercharger systems
- Dual diameter: 4.6" / 8.0"
- 10-rib serpentine belt interface for maximum traction
- Ideal for high-boost and high-RPM applications
- Precision-machined for proper fit and balance
Quick Specs
- Manufacturer: Vortech Superchargers
- Part Number: 4FA018-028
- Product Type: Crank Pulley
- Application: Ford Mustang 5.0L
- Model Years: 1986-1993
- Pulley Diameter: 4.6" / 8.0"
- Belt Type: 10-Rib Serpentine
Emissions & Legal Notice
- NOT AVAILABLE OR LEGAL FOR SALE IN CALIFORNIA
- Intended for off-road and race-use-only vehicles
- Installation on emissions-controlled vehicles driven on public roads may violate U.S. federal emissions law
FAQs
- Why use a 10-rib crank pulley?
A 10-rib pulley increases belt surface contact, helping reduce belt slip in higher-boost Vortech supercharger applications. - Is this pulley designed only for Vortech systems?
Yes. This crank pulley is intended for Vortech supercharger drive configurations on Fox Body Mustang 5.0L engines.
Fitment
- 1986 Ford Mustang 5.0L
- 1987 Ford Mustang 5.0L
- 1988 Ford Mustang 5.0L
- 1989 Ford Mustang 5.0L
- 1990 Ford Mustang 5.0L
- 1991 Ford Mustang 5.0L
- 1992 Ford Mustang 5.0L
- 1993 Ford Mustang 5.0L
Why Buy from Beefcake Racing?
Beefcake Racing is an authorized Vortech Superchargers dealer with extensive experience supporting Fox Body Mustang supercharger systems. From selecting the correct crank pulley diameter to optimizing belt drive reliability, our team ensures your Vortech setup performs consistently under boost.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

