Tillotson 212cc/Predator Ghost Works on: 212cc Predator Ghost Engines (Will not work for Predator Non-Hemi or Predator 212 Hemi) Tillotson 212 (Will not work for Tillotson 196cc or Tillotson 225cc) Works with all rockers (Stock rockers as well as oversized roller rockers) Additional information --Includes one threaded breather hole tapped at 1/8”-27NPT. Customer to provide 1/8” barbed fitting. --Uses stock gasket --1.5” overall height --Durable black powdercoating with laser engraved logo.