Parts Camp 532173438 Flat Idler Pulley for Husqvarna/AYP/Craftsman 104360X 131494 173438 532173438 John Deere AM103287 AM103480 AM108923 AM37321 Stens 280-623 Mower Pulley for 42" Decks

What It Is

This is a flat idler pulley that guides and tensions the drive belt on 42-inch mower decks from Husqvarna, AYP, Craftsman, and John Deere. It’s a direct replacement for OEM part numbers 532173438, 104360X, 131494, 173438, and several John Deere and Stens equivalents.

Fitment & Compatibility

• Deck size: Designed specifically for 42-inch decks. Do not use on 46-inch, 48-inch, or other sizes.
• Brands/models: Fits many Husqvarna, AYP (American Yard Products), Craftsman (DYT-style and some LT models), and John Deere (L100, L110, L120, LA series, D100, D110, D130, D140, D150, D155, D160, D170, X300, X304, X320, X340, X350, X360, X370, X380, X390, Z425, Z435, Z445, Z465, Z535, Z545, Z555, Z565, Z575, Z585, Z645, Z655, Z665, Z675, Z685, Z695, Z710A, Z720A, Z725A, Z730A, Z735A, Z740A, Z745A, Z750A, Z755A, Z760A, Z765A, Z770A, Z775A, Z780A, Z785A, Z790A, Z795A, Z800A, Z805A, Z810A, Z815A, Z820A, Z825A, Z830A, Z835A, Z840A, Z845A, Z850A, Z855A, Z860A, Z865A, Z870A, Z875A, Z880A, Z885A, Z890A, Z895A, Z900A, Z905A, Z910A, Z915A, Z920A, Z925A, Z930A, Z935A, Z940A, Z945A, Z950A, Z955A, Z960A, Z965A, Z970A, Z975A, Z980A, Z985A, Z990A, Z995A).
• OEM cross-reference: Replaces OEM #532173438, 104360X, 131494, 173438, John Deere AM103287, AM103480, AM108923, AM37321, and Stens 280-623.
• Measurements: Typically 4-inch diameter flat pulley with a 5/8-inch bore. Measure your old pulley’s diameter and bore before ordering.

Key Things to Know

• Quality: Made of durable steel with a sealed bearing. Holds up well under normal residential use.
• Installation: Easy – remove the old pulley (usually a single bolt), swap, and re-tension the belt. Basic hand tools only.
• Common gotcha: The bearing is sealed and non-serviceable. If it seizes, replace the entire pulley.
• Check belt routing: Some decks use two flat idlers; this one is for the flat idler position, not the tensioner arm pulley. Verify your deck diagram.

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