or more universal joints that may be interconnected in a manner known to those skilled in the art when the isolator is connected to flange 127 universal joint assembly 124 may extend through central opening 120 in the isolator and central opening 113 in the flywheel adaptor plate flange 127 also may include apertures 129 for adequate clearance of threaded fasteners 114 and nuts 122 the isolator has a first face 118 and a second face 119 the first face of the isolator facing transmission 102 and universal joint assembly 124 abuts and may be connected to the inside of the central hub of the flywheel adaptor plate the second face of the isolator facing engine 101 and the engine flywheel abuts and is connected to flange 127 of the universal joint assembly in fig4 and 5 a second embodiment is shown in which engine to transmission coupler 203 may include two universal joints flywheel adaptor plate 205 may be mounted to an engine flywheel by threaded fasteners not shown through the perimeter of the flywheel and through mounting holes in rim 209 isolator 217 may be positioned between the flywheel adaptor plate and the flywheel for example the isolator may be enclosed within central hub 210 of the flywheel adaptor plate isolator 217 may have a first face 218 a second face 219 a central opening 220 and holes 221 from the first face to the second face the first face of the isolator may abut and be connected to the.