Engines | Mounts, , CAT 3406, Misc Engine Part, (GOOD USED) OEM CATERPILLAR THERMOSTAT HOUSING COVER PART # 9Y-2586, PULLED OF CATERPILLAR 3406 DIESEL ENGINE, P/N 9Y2586, STOCK # 1807 | ALL OUR PARTS ARE TESTED AND SHIP PRIORITY MAIL! OVERNIGHT SHIPPING OPTIONS ARE AVAILABLE! CONTACT US FOR MORE INFORMATION!