This is an authentic Toro replacement part that is intended to be used with walk-behind lawnmowers. The transmission assembly is the main component of the mower's self-propel feature. The transmission assembly is used to rotate the drive wheels. This item includes the axle and gears, but the pulley is a separate item.
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★★★★★
★★★★★
Perfect Fix
Great part, received promptly. Thank you.
Guest - July 27, 2019
Verified Purchase
★★★★★
★★★★★
Perfect fit with OE replacement part. Mower like new now. Thank you
Perfect fit with OE replacement part. Mower like new now.
Thank you
Guest - March 12, 2020
Verified Purchase
★★★★★
★★★★★
Transmission woes
I put the tranny in place and when I rotated the pulley, it turned in the opposite direction. My grass was getting higher and I was using my other mower till I fixed my better self propelled one. My wife does the mowing and with rheumatoid arthritis I needed to get this mower going. I took my other tranny box apart and pushed the pin out. I'm hoping since there is another pin placement I can just flip the gear over to change rotation
Cliff - May 24, 2023
Verified Purchase
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The quality of replacement parts was excellent. The installation went good. This is the place to get replacement parts. Great service.
Just installed in reverse order of disassembly.
Removed transmission assembly from mower. Transferred
All parts from old assembly to new assembly. Installed new assembly on mower. Spent most time on removing pulley from shaft on old transmission. Gears were so damaged that nut could not be removed by holding drive shaft with vice grips. Had to take cover off transmission and wedg
... Read moree chisel in teeth of beveled pinion gear to keep shaft from turning so nut could be removed.
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
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(2005)_WW_6.gif "Part Location Diagram of 106-3955 Toro Transmission Asm")
(2005)_WW_6.gif "Part Location Diagram of 106-3955 Toro Transmission Asm")
