301A - LOADER, TWO-WHEEL DRIVE 15 AIR CLEANER, MUFFLER AND MANIFOLDS Parts group 15 AIR CLEANER, MUFFLER AND MANIFOLDS 15 AIR CLEANER, MUFFLER AND MANIFOLDS . AIR CLEANER RESTRICTION INDICATOR [01C02] AIR CLEANER, AIR INTAKE PIPES AND HOSES (SERIAL NO. -386506) (ENGINE SERIAL NO. 282381-621172) AIR CLEANER, AIR INTAKE PIPES AND HOSES (SERIAL NO. 386507- ) (ENGINE SERIAL NO. 282381-621172) VERTICAL MUFFLER [01C05] MUFFLER EXTENSION (WITH CANOPY) [01C05] MUFFLER AND MUFFLER EXTENSION (SPARK ARRESTING) [01C06] MANIFOLD (GASOLINE) [01C07] MANIFOLD (DIESEL) [01C07] AIR INTAKE (DIESEL) [01C08] REAR EXHAUST SYSTEM [01C09]