Components in this kit are offered under a single part number to complement the supercharger conversion parts provided by other suppliers.  

Our pulley kit, when used in conjunction with the appropriate 2003-2004 Cobra M112 supercharger and brackets, will facilitate the installation of the Eaton supercharger on the 4V Mercury Marauder and/or Mach 1 platforms.  Our kit includes our billet crank pulley hub with fasteners, your choice of crank pulley ring (with fasteners), and a two-piece supercharger pulley kit with the ring size of your choice.  

This kit does not include all of the parts necessary for this conversion.  It is up to buyer to source the main components for the kit: IE the supercharger, brackets, and miscellaneous components. 

Our crank pulley hub is manufactured to fit the typical balancer originally used in Mach 1 and Marauder applications.  This balancer can be identified by the large recess in the center with (3) M10 threaded bolt holes, and a raised register in center of recess for the balancer bolt.  And unlike the knockoffs of this kit offered by another supplier, the crank pulley hub included in our kit is specially configured to mate properly with the Marauder and Mach 1's balancer - the knock-off is simply a repurposed (and poorly made) Cobra crank pulley hub.  Our conversion crank hub will fit tightly over the raised register in the center of the Marauder balancer, resulting in virtually no run-out.  

Fitment of crank pulley rings larger than 10.0" is unconfirmed in these applications.