TonGass (2-Pack, Black) 532194327 Flat Idler Pulley Compatible with Ariens Craftsman Lawn Mower, Exact Replacement 3 1/2" Flat Idler Pulley Fit for Husqvarna Riding Lawn Mower, Part Number 532-194326

What It Is

This is a 3.5-inch flat idler pulley (OEM part #532194327 / 532-194326) that guides and tensions the mower deck belt on zero-turn and riding lawn mowers. It’s sold as a 2-pack and is designed as a direct replacement for the factory pulley on several major brands.

Fitment & Compatibility

Before buying, check three things:

• Deck size: Fits most 42" to 54" stamped steel decks on Ariens, Craftsman, Husqvarna, and some Poulan/MTD models. Not for fabricated decks or older 36" decks.
• Belt width: Uses a 1/2" or 5/8" wide belt. Measure your existing pulley width to confirm.
• Mounting hole: Center hole is 5/8" diameter with a 3/8" hex bore. Ensure your mower’s spindle bolt matches.
• OEM cross-reference: Exact replacement for 532194327, 532-194326, 532194326, and 194326X. Fits many AYP/Husqvarna decks from the early 2000s onward.

Key Things to Know

• Quality: Heavy-duty steel with sealed ball bearings. Holds up well under normal use, but bearings are not serviceable – replace when they get noisy or wobble.
• Installation difficulty: Easy. Remove belt, unbolt old pulley (usually one 5/8" or 3/8" bolt), swap, retension belt. No special tools needed.
• Common gotcha: The pulley is flat (not grooved). If your deck uses a v-groove idler, this won’t work. Also, check that the belt is routed correctly after install – a misrouted belt will wear pulleys fast.
• 2-pack value: You get two for the price of one OEM. Keep the spare for when the other side fails.

Should You Buy It

Buy this if you have a Ariens, Craftsman, or Husqvarna riding mower with a 42-54 inch deck and need a direct-fit, affordable replacement for a worn or noisy flat idler pulley. Avoid if you need a grooved pulley or have a different brand/older deck with non-standard bolt patterns.