Authentic Gravely 59118500 ELEC CLUTCH – HD/PTZ/APEX. This is Ogura model 3797600 (GT1.5-AR09). OEM replacement part for Gravely 05118900 Clutch, Ogura Double Spring (Superseded to 59118500). Clutch Only – This is the OEM replacement clutch made by Ogura. PLEASE NOTE: There is a similar looking clutch that has a different diameter hole in the center. You must match part numbers to know that this is the correct clutch for your specific model. 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. Clutch Only (Not the kit) Replaces. Has been superseded to.