100% New Electric PTO Clutch 59118500 05118900 For Gravely ZT HD 44 48 52 60. 991152 (ZT HD 48). 991154 (ZT HD 52). 991156 (ZT HD 60). 991160 (ZT HD 44). 991162 (ZT HD 48). 991188 (Pro-Turn Z 52). 991190 (Pro-Turn Z 60). 991254 (Pro-Turn Z 48). 991151 – Ariens Apex 60 Zero-Turn Mower, Kawasaki FR. 991153 – Ariens Apex 48 Zero-Turn Mower, Kohler. 991155 – Ariens Apex 52 Zero-Turn Mower, Kohler. 991157 – Ariens Apex 60 Zero-Turn Mower, Kohler. 991159 – Ariens Apex 52 Zero-Turn Mower, 23hp Kawasaki FR. 991161 – Ariens Apex 48 Zero-Turn Mower, 23hp Kohler. 991163 – Ariens Apex 60 Zero-Turn Mower, 24hp Kawasaki FR. 991173 – Ariens Apex 48 Zero-Turn Mower, Kohler, CARB. 991311 – Ariens Apex 48 Zero-Turn Mower, Kawasaki FR. 991312 – Ariens Apex 52 Zero-Turn Mower, Kawasaki FR. 991316 – Ariens Apex 48 Zero-Turn Mower, 23hp Kawasaki FR. 991324 – Ariens Apex 48 Zero-Turn Mower, 23hp Kawasaki FR, Side-Discharge. 991327 – Ariens Apex 52 Zero-Turn Mower, 23hp Kawasaki FR, Rear-Discharge.