ZZZ 13200.106 H06CTB GRADE Y PISTON AND LINER REBUILD LINER KIT HINO ENGINE H06CT FF19 FF197K FF H06CT-B FF192 FF193KPISTON AND LINER REBUILD LINER KIT GRADE Y FF19*K FF FF19 H06CTB 6. 5L 1981 1986 WITH THIS LINER KIT YOU GET 1 X STD PISTON 1 X RING PACK 1 X ENGINE LINER (SLEEVE) 1 X SMALL END BUSH 1 X GUDGEON PIN 2 X PIN CLIPS (ONLY IF YOUR ENGINE RUNS THEM) 2 X LINER ORINGS (ONLY IF YOUR ENGINE RUNS THEM) GRADES ARE MARKED ON THE FACE OF THE ENGINE BLOCK AND CAN BE "W" "X" "Y" "Z" OR "A" "B" "C" NOT ALL ENGINES USE GRADES AND IF THERE IS NO MENTION OF A "GRADE"