BBK SFI Underdrive Pulley System 4.6L 3V (2005+ GT)

BBK’s line of underdrive pulley systems have always been a top performance bolt-on for the popular late-model Mustang. Now owners of the latest 2005+ Mustang GT models can bolt-on an additional 8-10 horsepower with BBK’s latest offering.

Designed as an OEM quality upgrade to the factory system – this new kit features an SFI-approved balancer/crank pulley along with a CNC machined aluminum water pump pulley. The kit comes with complete instructions for an easy install, requires no other modifications and will deliver an increase in fuel efficiency by reducing power robbing accessory drag.