Compatible with Toro, For Exmark and Gravely models using the Loncin 764cc/23.5hp Engine Toro 74657, 74661, 74667, 74675, 74676, 74680, 74686, 74687, 74688, 74690, 74694, 74723, 74726, 74731, 74741, 74760, 74766, 74768, 74771, 74774, 74775, 74777, 74778, 74784, 74787, 74788, 74790, 74793, 74795, 74797, 74864, 74865, 74866, 74867, 74874, 74876, 74886, 74888, 75201, 75202, 75211, 75212, 75213, 75742, 75744, 75745, 75754, 75755, 75760, 74726TA, 74760TA, 74766TA, 74774TA, 75742TA, 75742W, 75745TA, 75745W, 75755TA, 75755W and 75760W Timecutter; 74490, 74491, 74492, 74493, 74494 and 77280 Z Master; 74450, 74451, 74452, 74453, 74454, 74466, 74874, 74877, 74887, 74889, 75301, 75302, 75303, 75311, 75312, 75313, 74447TE, 74451TE, 74453TE, 75301TA, 75311TA and 75312TA Titan Exmark/Toro Engines 136-7813, 136-7818, 139-0601 and 139-0603 Loncin LC2P80F-2201636 Exmark RAE702GEM44300, RAE708GEM44300, RAE708GEM48300, RAE708GEM52300 and RAE708GEM60300 Radius E-Series; RAS708GEM483C3, RAS708GEM523C3, RAS708GEM603C3 and RAS708GEM60RC3 Radius S-Series; QZE702GEM34200, QZE702GEM42200, QZE708GEM34200, QZE708GEM42200, QZS708GEM50200, QZS708GEM54200 and QZS708GEM60200 Quest Gravely Pro-Turn models with Loncin 764cc engine: 991188 (000101 - 024999) Pro-Turn Z52, 991188 (025000 - 029999) Pro-Turn Z52, 991188 (030000 - 039999) Pro-Turn Z52, 991188 (040000 +) Pro-Turn Z52, 991190 (000101 - 024999) Pro-Turn Z60, 991190 (025000 - 029999) Pro-Turn Z60, 991190 (030000 - 039999) Pro-Turn Z60, 991190 (040000 +) Pro-Turn Z60