Select page: PICT-020.1 20 ENGINE (25 HP) AM128312 ST501390 Fan Cover ST501391 Oil Pump ST501392 Oil Cooler ST501393 Oil Drain Hose ST501394 Cylinder Block / Crankshaft / Piston / Camshaft ( - 690503) ST501395 Cylinder Block / Crankshaft / Piston / Camshaft (690504 - ) ST501396 Cylinder Head ST501397 Engine Gasket Kit Other parts group: 20 ENGINE (25 HP) AM128312 30 FUEL AND AIR 40 ELECTRICAL 50 POWER TRAIN 60 STEERING, BRAKES AND CONTROL LINKAGES 70 HYDRAULICS 80 WHEELS, NON-POWERED AXLES, SHEET METAL 85 MOWER DECK AND LIFT LINKAGE