2PCS 532195945 197473 Spindle Pulley Idler Pulley for Husqvarna YTH22V46 YTH18542 YTH20K46 YTH21K46 Craftsman YT3000 YT4000 YS4500 Poulan Ariens 42" 46" Lawn Mowers Replaces 21546446 709731 195945

What It Is

This is a set of two spindle/idler pulleys designed for 42-inch and 46-inch lawn mower decks on Husqvarna, Craftsman, Poulan, and Ariens tractors. They guide and tension the deck belt to drive the blades.

Fitment & Compatibility

Before buying, check these three things:

• Deck size: Fits 42" and 46" decks only. Measure your deck width or check the model number.
• Model match: Confirmed for Husqvarna YTH22V46, YTH18542, YTH20K46, YTH21K46; Craftsman YT3000, YT4000, YS4500; and compatible Poulan/Ariens models with those decks.
• OEM cross-reference: Replaces Husqvarna 532195945, 197473, 21546446, 709731, and 195945. If your original part number matches one of these, it will fit.
• Physical check: Measure the pulley diameter (typically 3.5") and spindle shaft size (usually 5/8" or 3/4"). Verify your belt width matches the pulley groove.

Key Things to Know

• Quality: Aftermarket, not OEM. Users report it’s comparable to original but may wear slightly faster under heavy use.
• Installation: Easy – remove the old pulley (usually a single bolt), slide the new one on, and tighten. No special tools needed.
• Common gotcha: The pulleys may not include a spacer or bushing. Reuse your original hardware unless it’s damaged.
• Belt tension: If the belt is too loose or tight after install, check the idler arm spring tension and pulley alignment.

Should You Buy It

This is a solid budget-friendly replacement for a worn or noisy pulley on a 42" or 46" deck. If you’re confident your model is listed and you don’t mind a non-OEM part, it’s a good value. For critical commercial use, stick with OEM – but for residential cutting, this will get you back mowing quickly.