2 Pack 132-9420 Idler Pulley Replaces Toro 132-9420 Flat Idler Pulley, Toro 106-2175 Flat Idler Pulley for Toro Timecutter SS5000 SS4235 MX5060 Z4200 SS4235 42" 50" Riding Mower

What It Is

This is a 2-pack of flat idler pulleys (OEM part #132-9420) that guide and tension the deck belt on select Toro Timecutter zero-turn mowers. Designed for 42” and 50” cutting decks, they keep the belt tracking properly to avoid slippage and premature wear.

Fitment & Compatibility

Before buying, verify your mower’s model and deck size. This pulley fits Toro Timecutter models including SS5000, SS4235, MX5060, Z4200, and SS4235 with 42” or 50” decks. It also replaces Toro part #106-2175. Measure the pulley diameter (stock is 3.5”) and check that the bearing bore matches your spindle shaft (typically 5/8”). If your mower uses a different pulley size or a grooved (V) idler, this flat pulley won’t work. Always cross-reference your machine’s serial number with Toro’s parts diagram.

Key Things to Know

• Quality: OEM-grade steel with sealed ball bearings—holds up better than cheap plastic pulleys. The 2-pack is cost-effective if you’re replacing both idlers at once.
• Installation: Moderate difficulty. You’ll need a socket set and a belt removal tool or pry bar to release tension. No special skills required, but note the belt routing before disassembly.
• Common gotcha: The pulley’s flat face can wear unevenly if the belt is misaligned. Inspect the belt and other pulleys for wear before installing; replace them together to avoid premature failure.
• Price point: At $21.59 for two, it’s ~30% cheaper than buying singles from a dealer, but still genuine Toro—no fitment guesswork.

Should You Buy It

If you own a compatible Toro Timecutter 42” or 50” deck and are experiencing belt squeal, wobble, or uneven cutting, this 2-pack is a smart, budget-friendly OEM replacement. It’s ideal for DIY owners who want reliable performance without overpaying at the dealership. Skip it if your machine uses a grooved pulley or a different shaft size.