8TEN Deck Spindle Kit for Toro TimeCutter MX5000 5000C 50-Inch 139-3214 139-7454 117-7268

What It Is

This is an aftermarket deck spindle assembly for 50-inch Toro TimeCutter MX5000 and 5000C zero-turn mowers. It replaces the factory spindle that drives the blade, including the housing, bearings, shaft, and pulley.

Fitment & Compatibility

• Exact models: Toro TimeCutter MX5000 (model 74712, 74713, 74714) and 5000C (model 74715, 74716) with 50-inch fabricated deck.
• OEM cross-references: Replaces Toro part numbers 139-3214, 139-7454, and 117-7268.
• Measure before buying: Verify your deck spindle mounting bolt pattern (three bolts on 3-inch centers) and spindle shaft diameter (typically 5/8-inch). Check pulley height—this kit includes a 4.5-inch pulley, but your deck may require a 5-inch or 6-inch depending on blade overlap.
• Not compatible: 42-inch or 54-inch decks, or any TimeCutter with a stamped steel deck. Also won’t fit non-Toro spindles.

Key Things to Know

• Installation difficulty: Moderate. You’ll need a socket set, torque wrench (specs: 30-35 ft-lbs for mounting bolts), and a puller to remove the old spindle from the deck. Expect 45-60 minutes per spindle.
• Quality note: 8TEN uses sealed bearings with double-lip seals, comparable to OEM. However, the housing is cast aluminum (OEM is steel on some versions), so avoid over-torquing mounting bolts to prevent cracking.
• Common gotcha: The included pulley may not match your belt’s width (check for 1/2-inch vs 5/8-inch belt). Measure your old pulley’s groove width before installing.
• Warranty: 8TEN offers a 1-year limited warranty; keep your receipt and packaging.

Should You Buy It

If you need to replace a worn or failed spindle on a 50-inch TimeCutter MX5000 or 5000C and want a reliable, budget-friendly alternative to a $120+ OEM part, this kit is a solid choice. It’s especially good for DIY owners who can handle basic mechanical work and want to avoid dealer wait times. Skip it if you prefer OEM steel housings or need exact pulley dimensions for a non-standard belt.