Engine Crankshaft Front Rear Oil Seal Installation Tool Kit EN-52439-1 EN-52440-1 Fit for Cadillac CT6 Buick GL8 Regal Malibu 2.0T LSY LXH. 【Application 】: Designed for Buick GL8, Cadillac CT6, Malibu, and specifically for Cadillac XT4 with the 2.0L-T LSY engine.