NCIHEFLAG 132-9420 Flat Idler Pulley Replaces Toro 106-2175 Flat Idler Pulley for Toro Timecutter 50 42 inch SS5000 SS5060 SS4235 SS4225 Z4200 Z5000 Z5035 MX5060 MX5000 MX5050 4220 5000 Tractors

What It Is

This flat idler pulley (NCIHEFLAG 132-9420) maintains belt tension and guides the drive belt on select Toro Timecutter zero-turn mowers and tractor models. It replaces OEM Toro part 106-2175 and is used specifically on 42-inch and 50-inch deck configurations.

Fitment & Compatibility

Before buying, verify your mower has one of these decks and models:

• Deck sizes: 42-inch and 50-inch cutting decks.
• Compatible Toro Timecutter models: SS5000, SS5060, SS4235, SS4225, Z4200, Z5000, Z5035, MX5060, MX5000, MX5050, 4220, 5000, and SS4230 (if 50-inch deck).
• OEM cross-reference: Replaces Toro 106-2175 and MTD 732-04270A. Always check your mower’s model number (stamped on frame or under seat) against the list above.
• Physical check: Measure the original pulley’s outer diameter (should be ~3.5 inches) and confirm it’s a flat (not grooved) idler pulley. Verify the center hole size (5/8-inch) and bearing type (sealed ball bearing).

Key Things to Know

• Quality: Aftermarket part with sealed bearings; generally comparable to OEM for half the price. Some users report slightly noisier operation over time.
• Installation: Easy DIY job—remove belt, unbolt old pulley (usually 5/16-inch or 3/8-inch bolt), install new one, and re-route belt. No special tools needed.
• Common gotchas: Ensure pulley spins freely before installing. If your mower has a spring-loaded idler arm, check spring tension and arm pivot for wear. This pulley does not include a mounting bolt—reuse yours or order separately.
• Belt compatibility: Works with Toro 112-0610 and 108-238 drive belts. If replacing pulley, inspect belt for cracks or fraying and replace if necessary.

Should You Buy It

If your Toro Timecutter or tractor (42-50 inch deck) has a worn, noisy, or seized idler pulley, this is a cost-effective fix. It’s a direct replacement for the OEM part, easy to install, and well-reviewed. Skip it if you need a grooved pulley or have a different deck size.