Caterpillar 3406C, Flywheel Housings, (GOOD USED) OEM Caterpillar 3406C Flywheel Housing 7N-8367 For Sale, OEM Part # 7N8367, 7N 8367, Part # 7N8367 Replaced with Part # 4P-8535, 4P 8535, 4P8535, SAE 1, Material: Aluminum, Stock # 7434