174356 Spindle Assembly Fif for 46" 48" Deck Husqvarna Z246 RZ46i RZ4623 RZ4622 YTH2448 Zero Turn Mower AYP Craftsman Poulan Pro Lawn Mower Replace OEM 532174356 539107515 532192656 587125201

What It Is

This is a replacement spindle assembly for 46" and 48" cutting decks on Husqvarna, AYP, Craftsman, and Poulan Pro zero-turn and lawn tractors. It drives the mower blade, and is a direct fit for models like the Z246, RZ46i, RZ4623, RZ4622, and YTH2448.

Fitment & Compatibility

• Deck size: Fits 46" and 48" fabricated or stamped decks only—measure your deck width to confirm.
• Model cross-reference: Replaces OEM part numbers 532174356, 539107515, 532192656, and 587125201. If your mower uses any of these, this spindle will bolt on.
• Brands: Compatible with Husqvarna, Craftsman, AYP, Poulan Pro, and some older Roper-built units.
• Check before buying: Measure the spindle shaft diameter (typically 5/8" or 3/4") and the bolt pattern on your deck. Also verify the pulley size matches your belt setup—common sizes are 3.5" or 4.0".

Key Things to Know

• Quality: Aftermarket part with good reviews (4.4/5). It uses sealed bearings—no greasing needed, but inspect for smooth rotation before installing.
• Installation difficulty: Moderate. You’ll need a socket set, possibly a puller for the old spindle, and a torque wrench to tighten the center bolt to spec (usually 40-50 ft-lbs).
• Common gotchas: The included hardware may be metric vs. SAE—check your deck bolts before starting. Also, if your deck has a spindle brake system, confirm this spindle matches the brake arm design.
• Durability: Sealed bearings are a weak point on budget spindles—expect 2-3 seasons of normal residential use before replacement.

Should You Buy It

If you need a quick, budget-friendly fix for a worn spindle on a Husqvarna or Craftsman 46"/48" deck, this is a solid pick. It’s not heavy-duty enough for commercial use, but for homeowners it works well—just double-check your deck’s pulley diameter and bolt pattern to avoid a return.