Toro 117-3840 SPINDLE ASM

Description

Toro OEM Spindle Assembly 117-3840 (Complete Spindle Kit) | Fits Z Master G3 Turbo Force Decks

Restore smooth, reliable cutting performance with the Toro OEM Spindle Assembly 117-3840. This complete factory spindle kit is engineered for Toro Z Master G3 zero turn mowers equipped with Turbo Force side discharge mower decks. Built for commercial-grade durability, this OEM spindle assembly helps eliminate vibration, reduces uneven cutting, and supports correct blade rotation speed for a cleaner, more consistent finish.

OEM Part Number

117-3840

Spindle Assembly Includes (Complete Contents)

Toro 117-3840 spindle assembly contains the following OEM components:

• Spindle Bearing Assembly (1) Not serviced separately

  • 253-154 Oil Seal (2)

  • 71-2530 Bearing / Spacer Kit (1)

• 117-3841 Spindle Shaft Assembly (1)

• 114-1161 Hub, Spline (1)

• 69-6950 Spacer, Spindle Shaft (1)

• 3296-49 Lock Nut (1)

• 3-8514 Thrust Washer (1)

• 302-57 Grease Fitting (1)

Parts Sold Separately

• 323-4 Screw-HH (3)
• 3290-455 Washer-Belleville (3)
• 3290-455 Washer-Belleville (3)
• 3256-24 Washer-Flat (3) 
• 33115-025 Screw-HH (6)
• 33025-00 Nut-Lock, NI (6)

Fits Toro Z Master G3 Turbo Force Side Discharge Decks

Common fitment includes Toro Z Master G3 mowers with the following Turbo Force deck sizes:

• 48 inch Turbo Force Side Discharge Deck

• 52 inch Turbo Force Side Discharge Deck

• 60 inch Turbo Force Side Discharge Deck

• 72 inch Turbo Force Side Discharge Deck

Also used on select Toro commercial Z Master models including:

• 74941CP (48 inch Turbo Force)

• 74943CP (52 inch Turbo Force)

• 74945CP (60 inch Turbo Force)

• 74957CP (72 inch Turbo Force)

• 74965CP (60 inch Turbo Force)

• 74967CP (72 inch Turbo Force)

• 74955CP (60 inch Turbo Force Deluxe)

• 74960CP (60 inch Turbo Force)

• 74961CP (72 inch Turbo Force)

Why Replace Your Spindle Assembly?

A worn spindle can cause blade wobble, noisy operation, poor cut quality, and premature belt wear. Replacing the spindle with a genuine Toro OEM assembly helps maintain proper deck alignment and long-term reliability.

Product Features

• Genuine Toro OEM replacement spindle assembly

• Complete assembly with bearing, seals, shaft, and hardware included

• Designed for Turbo Force commercial mower decks

• Greaseable design for longer service life

• Helps reduce deck vibration and improve cut quality

Notes

Always confirm fitment using your mower model number and serial range before ordering. For best results, replace damaged blades and inspect pulleys and belts during installation.