Paxton Superchargers 6-Rib 3.75" Supercharger Drive Pulley (1996-1999 Mustang Cobra) 4PFK036-375
6-Rib 3.75" Supercharger Pulley for 1996-1999 Mustang Cobra
The Paxton Superchargers 6-Rib 3.75" Supercharger Drive Pulley (PN 4PFK036-375) is a precision-machined pulley engineered specifically for 1996-1999 Ford Mustang Cobra applications running compatible Paxton centrifugal supercharger systems. Designed for the 4.6L DOHC modular Cobra engine, this pulley delivers accurate blower speed control and dependable belt engagement for reliable, repeatable performance.
With a 3.75-inch diameter and 6-rib belt profile, this pulley is commonly used to fine-tune boost levels - often reducing impeller speed compared to smaller pulleys for conservative pump-gas setups, added thermal margin, or long-duration street use.
Boost Control & Drive Accuracy
Supercharger pulley diameter directly influences impeller speed and manifold boost. The 3.75" size provides a more relaxed drive ratio that can help manage intake air temperatures and belt traction while maintaining smooth, predictable power delivery.
Paxton pulleys are manufactured to tight tolerances to ensure proper alignment and vibration-free operation, helping reduce belt slip and extending belt and bearing life at higher RPM.
Designed for Paxton Supercharger Systems
This pulley is intended for use with Paxton centrifugal superchargers installed on 1996-1999 Mustang Cobra vehicles. Proper pulley selection should always consider supporting modifications such as fuel system capacity, charge cooling, engine internals, and ECU calibration.
Features & Highlights
- 6-rib supercharger drive pulley
- 3.75" diameter for conservative boost and RPM tuning
- Precision-machined for accurate fit and alignment
- Designed to minimize belt slip under load
- Optimized for Paxton centrifugal supercharger systems
- Ideal for modular 4.6L DOHC Cobra applications
Installation Notes
- Designed for 1996-1999 Ford Mustang Cobra applications
- Professional installation recommended
- ECU tuning required when changing pulley size
- Verify belt length and overall system compatibility before installation
Quick Specs
- Manufacturer: Paxton Superchargers
- Part Number: 4PFK036-375
- Application: 1996-1999 Ford Mustang Cobra
- Pulley Diameter: 3.75"
- Belt Type: 6-Rib
- Component Type: Supercharger Drive Pulley
Fitment
- 1996 Ford Mustang Cobra
- 1997 Ford Mustang Cobra
- 1998 Ford Mustang Cobra
- 1999 Ford Mustang Cobra
Emissions & Legal Notice
- For off-road and competition use only
- Installation on emissions-controlled vehicles driven on public roads may violate U.S. federal emissions law
Why Buy from Beefcake Racing?
Beefcake Racing is an authorized Paxton Superchargers dealer with extensive experience supporting modular Mustang Cobra builds. We help customers select the correct pulley combinations, belt drives, and tuning strategies to ensure safe, reliable power gains.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
