Premium Quality Replacement Part. Z As Zero-Turn Mower, 23hp (Sn: 600000 – 669999) (2006). Z As Zero-Turn Mower, 25hp (Sn: 670000 – 719999) (2007). Z As Zero-Turn Mower, 25hp (Sn: 600000 – 669999) (2006). Z As Zero-Turn Mower, 25hp (Sn: 720000 – 789999) (2008). Z As Zero-Turn Mower, 28hp (Sn: 670000 – 719999) (2007). Z As Zero-Turn Mower, 28hp (Sn: 720000 – 789999) (2008). Diesel Zero-Turn Mower, 25hp (Sn: 600000 – 669999) (2006). Diesel Zero-Turn Mower, 25hp (Sn: 670000 – 719999) (2007). Diesel Zero-Turn Mower, 25hp (Sn: 720000 – 789999) (2008). Diesel Zero-Turn Mower, 25hp (Sn: 790000 – 849999) (2009). Length: 171.8 mm – 6.76 in Width: 200.8 mm – 7.90 in Height: 200.8 mm – 7.90 in.