Compatibility: This transmission assembly is compatible with 23 different Toro lawn mower models, including: 20in Mulching or Rear Bagging Lawn Mowers: 10604, 10625, 10641C, 10646, 10605, 10632, 10642, 10647, 10606, 10634, 10642C, 10649C, 10624, 10641, 10644C, 10658 20in Recycling or Rear Bagging Lawn Mowers: 20314, 20316 50cm Mulching or Rear Bagging Lawn Mowers: 29639, 29642 50cm Mulching or Rear Bagging or Side Discharge Lawn Mowers: 29641, 29643 Dimensions: The product measures 17.72 inches in length and 4.13 inches in width, ensuring a for your mower. Part Number: 121-9181 This part is used in 23 model Model: 10604 (20in Mulching or Rear Bagging Lawn Mower) Model: 10605 (20in Mulching or Rear Bagging Lawn Mower) Model: 10606 (20in Mulching or Rear Bagging Lawn Mower) Model: 10624 (20in Mulching or Rear Bagging Lawn Mower) Model: 10625 (20in Mulching or Rear Bagging Lawn Mower) Model: 10632 (20in Mulching or Rear Bagging Lawn Mower) Model: 10634 (20in Mulching or Rear Bagging Lawn Mower) Model: 10641 (20in Mulching or Rear Bagging Lawn Mower) Model: 10641C (20in Mulching or Rear Bagging Lawn Mower) Model: 10642 (20in Mulching or Rear Bagging Lawn Mower) Model: 10642C (20in Mulching or Rear Bagging Lawn Mower) Model: 10644C (20in Mulching or Rear Bagging Lawn Mower) Model: 10646 (20in Mulching or Rear Bagging Lawn Mower) Model: 10647 (20in Mulching or Rear Bagging Lawn Mower) Model: 10649C (20in Mulching or Rear Bagging Lawn Mower) Model: 10650C (20in Mulching or Rear Bagging Lawn Mower) Model: 10658 (20in Mulching or Rear Bagging Lawn Mower) Model: 20314 (20in Recycling or Rear Bagging Lawn Mower) Model: 20316 (20in Recycler or Rear Bagging Lawn Mower) Model: 29643 (50cm Mulching or Side Discharge or Rear Bagging Lawn Mower) Colour:Silver and Black Material:Metal Package Contents: 1 x Transaxle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.