KM212 Synchro, Bearing, Gasket and Seal Kit | Standard Manual Transmission Sonata KM 212 5-Speed FWD Standard Manual Transmission Synchronizer Blocker Ring, Bearing, Gasket and Seal Kit. 72 Overall Diameter rear input bearing, 3rd and 4th Synchro rings have 39 teeth, Rerverse Synchro Ring.1996-1998 Hyundai Sonata 2.4L Part #: BK274BWS MSRP: Was: Now: $324.99 Decrease Quantity: Increase Quantity: Add to Cart