These bad phat boys provide maximum flow and power with a distinctive turbo hush. The EMPI PHAT Boy Muffler fits 1300cc to 1600cc based engines in Standard and Super Beetles as well as Karmann Ghias. This VW Muffler mounts in the 1 o clock position on a small 3 bolt flange and can be used with J-Tubes or stock heater boxes Kit includes gaskets stainless steel bolts and copper nuts. Compatible with exhaust headers part numbered 3100 3102 and 3767. Black is for storage and not meant to be a finished coating Engine: Type 1 1300-1600cc Coating: None Raw Steel Fits: All Premium ExtractorsPhat Boy Muffler Black for 3 Bolt Header for Beetle