Aeagle 174356 Spindle Assembly 174358 587125201 532174356, for 46" 48" Deck Husqvarna Z246 RZ4623 RZ46i RZ4622 YTH2448 RZ4219 GTH2548 GT2248 YTH2448 (2 Pack)

What It Is

This is a replacement spindle assembly for Husqvarna 46- and 48-inch cutting decks. It drives the blade, and is used on zero-turn riders (Z246, RZ4623, RZ46i, RZ4622, RZ4219) and lawn tractors (YTH2448, GTH2548, GT2248). The 2-pack covers both left and right spindles on most decks.

Fitment & Compatibility

Before buying, verify these three things:

• Deck size: Fits 46" and 48" Husqvarna decks only. Will not fit 42" or 54" decks.
• OEM cross-reference: Direct replacement for Husqvarna part numbers 174356, 174358, 587125201, and 532174356. Aftermarket (Aeagle), not OEM.
• Measure your old spindle: Confirm bolt pattern (typically 3-bolt, 3.25" center-to-center) and shaft diameter (5/8" round). The 174356 uses a 5/8" shaft with a 1/4" keyway.

Common compatible models: Husqvarna Z246, RZ4623, RZ46i, RZ4622, YTH2448, RZ4219, GTH2548, GT2248. Check your deck model number (stamped on top or side) if unsure.

Key Things to Know

• Quality vs OEM: Aeagle is a budget aftermarket brand. Expect acceptable performance for residential use, but housings and bearings may wear faster than genuine Husqvarna spindles under heavy or commercial use.
• Installation difficulty: Moderate. Requires removing the deck, unbolting the old spindle, and transferring the pulley and blade. Use a torque wrench (blade bolt ~70-90 ft-lbs). Loctite on spindle bolts is recommended.
• Common gotcha: The spindle shaft may have a different keyway depth than OEM. Check that your blade adapter or pulley slides on smoothly before tightening.
• Bearing preload: Some users report the bearings feel slightly loose out of the box. If so, tighten the center nut slightly (but don’t bind the bearings).

Should You Buy It

If you have a 46" or 48" Husqvarna deck and need a quick, affordable fix for a wobbly or noisy spindle, this 2-pack is a solid value for residential mowing. Skip it if you mow commercially or want OEM-level longevity—genuine Husqvarna spindles cost more but last longer under heavy use.