2Pack GY20785 Spindle Assembly for John Deere L110 Deck Rebuild kit | for John Deere L111 L118 L108 L105 Decks, Inlcludes 2xGY20785 Spindle, 2xGX20367 Spindle Pulley, GY20629 and GY20067 Pulley

What It Is

This is a 2-pack spindle assembly rebuild kit for John Deere L-series lawn tractors (L105, L108, L110, L111, L118). It replaces worn spindles and pulleys that drive the mower deck blades, restoring smooth cutting performance.

Fitment & Compatibility

• Deck models: Fits 42-inch and 48-inch Edge/Edge Xtra decks commonly found on L105, L108, L110, L111, L118 tractors.
• OEM cross-reference: Replaces John Deere GY20785 spindle, GX20367 pulley, GY20629 pulley, and GY20067 pulley.
• Check before buying: Measure your existing spindle housing bolt pattern (typically 4-bolt, 3.25-inch center-to-center). Verify pulley diameter (stock is 4.5 inches for the large, 3.5 inches for the small). Not compatible with older 38-inch decks or non-L-series models.
• Aftermarket fit: This is a direct-fit aftermarket set—no modifications needed if your deck matches the OEM specs.

Key Things to Know

• Build quality: Cast iron housing with sealed bearings—more durable than OEM plastic housings on some L-series decks.
• Installation difficulty: Moderate. Requires removing the deck, unbolting the old spindle, and transferring the blade. Basic hand tools and a torque wrench (for blade bolts, 40-50 ft-lbs) are sufficient.
• Common gotcha: The included pulleys may have a slightly thicker belt groove than OEM—check belt tension after install. If the belt rides high, adjust the idler pulley.
• Set includes: Two complete spindle assemblies, two pulleys (GX20367), and two additional pulleys (GY20629, GY20067)—you get everything for a full deck rebuild in one box.

Should You Buy It

Buy this if your L-series deck has noisy, wobbly, or seized spindles and you want a complete, cost-effective rebuild without sourcing individual parts. It’s ideal for DIYers with moderate mechanical skills who want cast-iron durability over stock plastic. Skip it if you only need one spindle or have a non-L-series deck.