One New Aftermarket Replacement Spindle Assembly Fits Toro (Fits Toro) Z Master Zero-Turn Mowers

This spindle assembly is a fully built, ready-to-install replacement for the cutting deck of Fits Toro Z Master Z400 and Z500 series zero-turn mowers, including Grandstand models. The spindle connects the drive belt and pulley system to the mower blades, enabling smooth, consistent blade rotation. This part Fits Toro OEM part number 107-8504 and is cross-referenced as Fits Stens 285-881.

Specifications

• Overall Height: 7-1/2 in.
• Outer Diameter (OD): 9-3/8 in.
• Grease zerk fitting included
• No threads in housing -- use self-tapping screws for installation
• Fits 48 in., 52 in., and 60 in. Turbo Force and 7-Gauge side-discharge decks

Compatible Models

Fits Toro Z Master Z400 Series: Z400, Z410, 74410 (Z400 with 52 in. deck), 74412 (Z400 with 48 in. deck), Z441 (74413), Z449 (74413), Z450, Z453

Fits Toro Z Master Z500 Series: Z500, 74248 (Z500 with 52 in. deck), 74249 (Z500 with 60 in. deck), 74291 (Z500 with 52 in. deck), 74292 (Z500 with 60 in. deck)

Fits Toro Z Master Z528 Series: Z528, 74237 (Z528 with 52 in. deck), 74238 (Z528 with 60 in. deck)

Fits Toro Grandstand: Models with 48 in. and 52 in. Turbo Force Cutting Unit

Replaces Part Number(s):

107-8504, 1078504

Aftermarket Interchange Numbers

Fits Stens 285-881; J. Thomas LM0650

New aftermarket replacement part - not remanufactured, not used.