This eight bolt plate fits all 1300, 1600 and 1750 engines. These hardened steel plates were never furnished as original equipment. Only lock tabs were used with original equipment iron flywheels. With aluminum flywheels, this piece is especially important. It absorbs the friction of torquing the bolts and distributes the pressure to prevent migration of the aluminum under load.  The eight 9mm flywheel bolts require four locktabs 605-15804 .