Parts for Caterpillar 3406E - Select Parts Category Loading... 1 Engine Water Pump 2 Engine Overhaul Kit 3 Gauges 4 Marine Water Pump 5 Cylinder Head 6 Fuel 7 Injector 8 Turbo 9 Intercooler, Aftercooler 10 Oil 11 Crankshaft 12 Camshaft 13 Engine Piston Kit 14 Connecting Rod 15 Exhaust 16 Gasket 17 Sensor 18 Switch 19 Fuel Filter 20 Oil Filter 21 33C Marine Cable (3/16") 22 43C Marine Cable (1/4") 23 Industrial Cable 24 Paint & Sealant 25 Twin Disc 26 Marine Parts