Select page: PICT-020.1 20 ENGINE GU20378 ST643129 Cylinder Block and Dipstick ST643130 Crankshaft and Piston ST643131 Cylinder Head ST643132 ENGINE GASKET KIT ST643133 Engine Shrouds (Engine MARKED 445777-0264-E1) ST643134 Engine Shrouds (Engine MARKED 445877-0130-E1) ST967016 Cylinder Head Kit, High Compression ST976929 Cylinder Head Kit Other parts group: 20 ENGINE GU20378 30 FUEL AND AIR 40 ELECTRICAL 50 POWER TRAIN 60 STEERING AND BRAKES 80 WHEELS, FRAME AND OPERATOR'S STATION 85 Mower Deck and Lift Linkage 86 MATERIAL COLLECTION SYSTEM 87 Snowblower (42" (1.07m)) 88 Blade (46" (1.17m)) 89 Snowblower (44" (1.12m)) 90 LABELS AND OPTIONAL EQUIPMENT