Wide Application: Fits for Paccar PX-6, PX-8, 1989 & Newer Cummins 4BT 3.9L, ISC 8.3L, B Series 5.9L, ISB, ISL 5.9L 6.7L, QSB 5.9L 6.7L and ISL9 L9 9.0L, Works on seal number 5259499 and 3926126. For Newer Cummins 4BT 3.9L, ISC 8.3L, B Series 5.9L, ISB, ISL 5.9L 6.7L, QSB 5.9L 6.7L and ISL9 L9 9.0L.
