(2 Pack) Spindle Replacement for John Deere GY21098 GY20454 GY20867 GY20962 Fits D100 D140 D150 D160 LA100 LA165 X110 X120-42 48" Deck…

What It Is

This is a two-pack of replacement spindle assemblies for 42- and 48-inch cutting decks on select John Deere lawn tractors. Each spindle houses the bearings and shaft that spin your mower blades; if you hear grinding, wobble, or uneven cut, a worn spindle is the likely culprit.

Fitment & Compatibility

Before buying, confirm your deck size and model. These spindles directly replace John Deere OEM part numbers GY21098, GY20454, GY20867, and GY20962. They fit D100, D140, D150, D160, LA100, LA165, X110, and X120 models—but only those with a 42- or 48-inch deck. Double-check your deck’s stamped model number (e.g., “42” or “48” on the deck shell). Measure the spindle bolt pattern (typically 3-bolt, 3.5-inch center-to-center) and shaft diameter (usually 5/8-inch). If your deck uses a different pattern or a 54-inch deck, these won’t work.

Key Things to Do

• Check for deck damage first: A bent deck or broken housing can cause premature spindle failure—replacing spindles alone won’t fix a warped deck.
• Installation difficulty: Moderate. Expect to remove the deck, unbolt the old spindle (use penetrating oil on rusted bolts), transfer the pulley and blade, and torque to spec (typically 30-40 ft-lbs). A pulley puller may be needed.
• Quality note: These are aftermarket spindles. Most users report good bearing quality and fit, but inspect the shaft for burrs and grease the bearings before install. Some report slightly looser tolerances than OEM; locktite on bolts is recommended.
• Common gotcha: The included hardware may not match your original bolts exactly—reuse your OEM bolts if the new ones don’t seat fully.

Should You Buy It

If your John Deere has a 42- or 48-inch deck and you want a cost-effective fix for wobbling or noisy spindles, this two-pack is a solid choice. It’s cheaper than buying OEM singles and works well for DIY owners who can handle a few hours of deck work. Skip it if you need exact OEM fitment or have a 54-inch deck.