CATERPILLAR ARTICULATED TRUCK: 725, 730, 735, 740, D250E, D250E II, D300E, D300E II, D350E, D350E II, D400E, D400E II. Fit for Engine: Caterpillar 3304B, 3306, 3306B, 3406, 3406C, 3406E, 3408E, 3412, 3412C, 3412E, 3508, 3508B, 3512, 3512B, 3516, 3516B, G3512, G3516, G3304.