The Porsche 911 Carrera 996 was introduced in late 1997 (1998 in the US) in coupe and cabriolet variants, with manual or Tiptronic transmission (automatic). Overlapping with the last year Carrera 993's, the 996 Carrera represented two major changes for the venerable 911 lineage: a water-cooled flat-6 engine replaced the air-cooled engine used in the previous 911 model, and the body shell received its first major re-design. Engine displacement was 3.4L and power output was 300 PS (221 kW; 296 hp). It evolved into the 996.2 Carrera for model year 2002.