Section 17 VEHICLES, AIRCRAFT, VESSELS AND ASSOCIATED TRANSPORT EQUIPMENT 87 VEHICLES OTHER THAN RAILWAY OR TRAMWAY ROLLING-STOCK, AND PARTS AND ACCESSORIES THEREOF 87 08 PARTS AND ACCESSORIES OF THE MOTOR VEHICLES OF HEADING 87.01 TO 87.05 87 08 92 SILENCERS (MIFFLERS) AND EXHAUST PIPES; PARTS THEREOF; FOR TRACTORS Commodity Code Description 87 08 92 10 SILENCERS (MIFFLERS) AND EXHAUST PIPES; PARTS THEREOF; FOR TRACTORS 87 08 92 90 OTH.SILENCERS(MUFFLERS)/EXHAUST PIPES; PARTS..,FOR M/VEH.OF HD 87.02-87.05