OEM electric PTO clutch replacement for Toro & Exmark part number 110-6766.  Authentic Warner Electric clutch, not aftermarket. Fits specific, not all, 50-inch cut Toro TimeCutter models; 48-inch, 50-inch & 52-inch cut Toro Titan models; and 42-inch, 48-inch, 50-inch & 52-inch Exmark Quest models. Toro 110-6766 Among other models, please match part numbers per your model & serial number's parts diagram. Fits Toro Titan & TimeCutter Z5000, Z5020, Z5030, Z5040, Z5060, SS5000, & SS5060.  It does not fits all Titans and TimeCutters - match part numbers.  Fits some 50" Toro TimeCutter models and some 48", 50" and 52" Titan models. Exmark 110-6766 Among other models, please match part numbers per your model & serial number's parts diagram.  Fits some, but not all Exmark Quest models - match part numbers. Quest Model # QST20BE422 (Serial # Range 790000 - 919999) Quest Model # QST22BE482 (Serial # Range 670000 - 919999) Quest Model # QST22BE482C (Serial # Range 790000 - 919999) Quest Model # QST23KC482 (Serial # Range 720000 - 789999) Quest Model # QST23KC522 (Serial # Range 720000 - 789999) Quest Model # QST24BE522 (Serial # Range 670000 - 919999) Quest Model # QST24BE522C (Serial # Range 790000 - 919999) Quest Model # QT24KA501 (Serial # Range 920000 - 999999) Quest Model # QTE691KA501 (Serial # Range 312000000 - 313999999) Dimensions: Pulley/Flange OD: 5.8" Bore Diameter: 1" Height: 3.6" Have a question about this product? Contact us for assistance and tell us you are looking at SKU 5219-81 (16133).