Factor 55 ProLink Shackle Mount w Titanium Pin & Rubber Guard 16,000 Lbs Orange FREELANDER AIR FILTER underwater LR3 Gaskets underwater This kit comes complete with a brand new Thermostat w housing (PEM000030) New Thermostat to Water Pump Housing Pipe (PEP101970L) and a New Block to Heater Elbow Pipe (PEP103580) The advantages of winching with a screw pin shackle over a conventional winch hook are many : Screw pin shackles are up to 5X stronger than conventional winch hooks Conventional hooks are too small to safely fit both ends of a recovery strap Recover straps cannot slip out of a shackle like they can with hooks Hook safety latches are not rated for loads and can tear recovery straps Conventional hook surfaces add higher stresses to recovery strap fibers Factor 55 introduces the new ProLink shackle mount for winch cables and synthetic ropes