Interchangeable Crank Pulley Kit
1999-2004 Lightning, Supercharged Harley Davidson F150
Also 6.8L Commercial Applications - See Note* at Bottom of Page
This comprehensive kit allows the user to easily add boost and horsepower to the factory supercharged Lightning and Harley Davidson trucks. The kit installs easily with no modifications or special tools required, and it provides for quick and simple boost level changes once installed.
The kit includes a crank pulley hub precision-machined from billet aluminum, one pulley ring of your choice, a laser-cut tool to hold the engine in position during installation and silver-zinc plated high-quality fasteners. Pulley ring choices include +2 lbs, +4 lbs, +6 lbs, +8 lbs, and +10 lbs of boost over the stock level. Stock-size and 1" smaller than stock size pulley rings are also available for use with aftermarket superchargers, or for users simply seeking to replace a failed stock crank pulley assembly. We also offer 10.5" and 11.0" pulley rings, but no fitment, boost, or belt data is available, as these are offered for custom applications only. These custom sizes are available via phone or email.
The 14mm hex tool is offered as an optional installation aid (shown in images, not included) to break the original crank pulley bolt loose. It is CNC-machined from 1045 steel and then heat-treated for additional strength. This tool is very strong and is often appreciated when dealing with an extra-stubborn crank pulley bolt. As an alternative, a 14mm hex bit to fit your favorite ratchet or breaker bar is available from many sources. A 14mm hex bit (or our hex tool) is required for installation of this kit if the original crank pulley assembly is in place.
Please make your pulley size selection below.
Pulley rings are available separately and are also listed in this section.
Note: If your vehicle is a 1999-2000 model, please let us know in the Additional Info section at Checkout, and we will size the crank pulley hub to optimally fit the slightly different balancer used in those years.
Note 1: We have confirmed that this kit will fit the 2004-2005 Roush F150 with the supercharged 3V engine, among other years. It may fit later models using the Lightning-style dual belt system and the harmonic balancer with the (3) threaded holes in the recess of the balancer. The +2 lb crank pulley ring provides a verified additional 2.2 lbs of boost in the Roush application.
Note 2: If your Lightning or Harley Davidson truck is equipped with the ATI balancer for this application (ATI PN 918037), a dedicated crank pulley hub is available and is listed elsewhere in this section. It can be substituted for the standard crank pulley hub included in this kit at no extra charge, when ordered directly on our website.
*For 6.8L Commercial Applications: This kit configured with the stock-size pulley ring is the permanent solution to the failure-prone crank pulley assemblies used in commercial 6.8L applications running auxiliary compressors or pumps. Please add the note '6.8L' in the Comments section at Checkout and we will configure the kit to optimize the fit for these heavy-duty applications at no additional cost.