539131898 Spindle Assembly Fits for Husqvarna Z242F Z248F Z254F MZ48 MZ52 MZT52 MZ54 MZ61 MZT61 TS242 TS248 TS348 TS354 Lawn with 42" 48" 52" 54" 61" Mowers Decks Replacement 539131767 539112170

What It Is

This is a replacement spindle assembly for Husqvarna zero-turn and riding mowers with fabricated or stamped decks from 42" to 61". It transfers power from the deck belt to the blade, and it’s commonly needed when blades wobble, the deck vibrates, or you see bearing play or noise.

Fitment & Compatibility

Before buying, confirm three things:

• Deck size & model: Fits Husqvarna Z242F, Z248F, Z254F, MZ48, MZ52, MZT52, MZ54, MZ61, MZT61, TS242, TS248, TS348, TS354. Also fits decks of 42", 48", 52", 54", and 61" on compatible models.
• OEM cross-reference: Replaces OEM part numbers 539131767 and 539112170. If your original spindle has a different number, measure bolt pattern and shaft diameter before ordering.
• Physical check: Measure the spindle housing height, bolt hole spacing (typically 3.5" or 4" center-to-center), and shaft length. The shaft diameter should be 5/8" or 1" depending on deck. Compare to your old spindle to avoid a return.

Key Things to Know

• Quality: This is an aftermarket part, not OEM Husqvarna. Most users report it matches OEM specs, but check for burrs on the shaft before installation.
• Installation difficulty: Moderate. You’ll need a socket set, a breaker bar, and possibly a puller if the old spindle is seized. Plan 30–60 minutes per spindle.
• Common gotchas: The included bearings are pre-greased, but adding a thin layer of anti-seize on the shaft can prevent future rust-lock. Torque the spindle nut to 40–50 ft-lbs—overtightening can damage the bearing.
• Deck-specific: On 61" decks, the center spindle may have a different height than the outer spindles. Verify all three are identical before ordering multiples.

Should You Buy It

If you have a compatible Husqvarna model listed above and need a reliable, budget-friendly replacement for a worn or noisy spindle, this is a solid choice. It’s priced well below OEM (typically $50–$70 each) and has strong user feedback. Avoid it if you need an exact OEM match for a warranty claim or if your deck uses a non-standard bolt pattern.