3 Pack 139-3214 Spindle Assembly with 125-5575 Spindle Pulley Replaces 121-0751 117-7439 117-7267 139 3214 121 0751 117 7267 for Toro MX5000 MX5050 MX5060 SS5000 SS5060 SW5000 SS 5000 Mowers

What It Is

This is a 3-pack of spindle assemblies with pre-installed pulleys (125-5575), designed to replace the factory spindles on Toro MX5000, MX5050, MX5060, SS5000, SS5060, SW5000, and SS 5000 series zero-turn mowers. Each assembly includes the spindle housing, shaft, bearings, and pulley—ready to bolt on without pressing bearings or swapping pulleys.

Fitment & Compatibility

Before buying, verify your mower’s deck size and model number. These spindles fit 60-inch and 72-inch Toro decks on the listed models, but not all Toro zero-turns use the same spindle. Check your existing part number against the cross-references (139-3214, 121-0751, 117-7439, 117-7267). Measure the spindle shaft diameter (commonly 1 inch) and bolt pattern (typically 4-bolt, 3.5-inch center-to-center). This is an aftermarket replacement—not OEM Toro—so confirm the mounting holes align with your deck’s spindle brackets. If you have a different deck size (e.g., 50-inch or 54-inch) or model not listed, these will not fit.

Key Things to Know

• Quality vs. OEM: These aftermarket spindles are generally well-reviewed (4.7 stars) and use sealed bearings, but may have slightly shorter bearing life than genuine Toro parts. Good for budget-conscious repairs.
• Installation difficulty: Moderate. Requires removing the deck, accessing spindles from below, and torquing bolts to spec (typically 40–50 ft-lbs). No special press needed—spindle and pulley are pre-assembled.
• Common gotcha: The pulley belt groove width must match your deck’s belt. These pulleys are designed for standard 1/2-inch belts. If your deck uses a wider or narrower belt, you’ll need to swap pulleys or buy a different assembly.
• Always replace all three at once if one fails—uneven wear can cause vibration and blade damage. This 3-pack makes that easy.

Should You Buy It

If you own one of the listed Toro models and need to replace worn or wobbling spindles, this 3-pack is a solid, cost-effective choice. It saves time over rebuilding individual spindles and avoids the higher price of OEM parts. Not ideal if you want genuine Toro longevity or have a non-compatible deck—check fitment first.