2PCS Deck Spindle Assembly - Replace for John Deere 100 Series 42", 54" Deck Lawn Tractors - L100-L130, LA105-LA175, D100-D170, E100-E180, S100-S160, X100-X140 Since 2006 - with Zerk & Bolts

What It Is

This is a set of two deck spindle assemblies that drive the mower blades on John Deere 100 Series lawn tractors with 42" or 54" decks. They replace worn or failed spindles that cause blade wobble, uneven cutting, or loud bearing noise.

Fitment & Compatibility

Before buying, confirm your mower’s deck size (42" or 54") and model year (2006+). Compatible with L100-L130, LA105-LA175, D100-D170, E100-E180, S100-S160, and X100-X140 series. This aftermarket part replaces OEM numbers AM137322, AM137323, GY20782, GY20783, and GY21179. Measure the spindle housing bolt pattern (typically 3-bolt, 4.5" center-to-center) and shaft diameter (1" or 5/8") to match your deck. Not for 48" decks or older non-100 Series tractors.

Key Things to Know

• Build quality: Includes grease zerks for regular lubrication, which extends bearing life vs. sealed OEM spindles. Bolts are included, but check thread pitch (usually 5/16-18) to match your deck.
• Installation difficulty: Moderate. You’ll need a socket set, jack or ramps, and possibly a puller to remove old spindles. Expect 30-60 minutes per spindle.
• Common gotchas: The included bolts may be slightly shorter than OEM; reuse original bolts if they’re in good condition. Grease the zerks immediately after install. If your deck has a 1" shaft, verify the pulley bore size is the same.
• Performance: Users report smooth operation and reduced vibration. Some note the bearings are slightly noisier than OEM, but they hold up well with regular greasing.

Should You Buy It

Buy this if you need a budget-friendly, reliable replacement for worn spindles on a 100 Series John Deere with a 42" or 54" deck. The included zerks let you extend service life, making it a good value for DIYers. Skip it if you want exact OEM fitment or have a different deck size.