2 Pack GY21098 Spindle with GX20367 Spindle Pulley GX20072 Belt 1/2x103 Replaces AUC15811 GY20454 GY20867 GY20962 for John Deere D100 D105 D110 D125 D130 E100 E130 LA105 LA110 LA115 Tractors

What It Is

This 2-pack spindle assembly kit replaces the factory-installed spindles on 42-inch and 48-inch Edge/Saber/Accel Deep mower decks found on select John Deere lawn tractors. Each spindle includes a pre-mounted GX20367 pulley and comes with a GX20072 belt (1/2x103 inches), making it a direct drop-in replacement for worn or failed spindles that cause blade wobble, vibration, or uneven cutting.

Fitment & Compatibility

Check your deck size and model number – this kit fits 42" and 48" decks on John Deere D100, D105, D110, D125, D130, E100, E130, LA105, LA110, and LA115 tractors. It replaces OEM spindles AUC15811, GY20454, GY20867, and GY20962. Verify your existing spindle pulley is 4.5 inches in diameter and that the belt measures 1/2-inch wide by 103 inches long (outside length). If your deck uses a different belt length or pulley size, this kit won’t fit. Also confirm your deck has three spindles (two outer, one center) – this is a 2-pack, so you’ll need to buy a second set if replacing all three.

Key Things to Know

• Quality vs OEM: These are aftermarket spindles. Most users report decent durability for residential use, but OEM John Deere spindles (GY20962) may last longer under heavy or commercial use.
• Installation difficulty: Moderate. You’ll need a socket set, wrench, and possibly a puller to remove old spindle pulleys. The belt is included but must be routed correctly – take a photo of the old belt path before removal.
• Common gotcha: The included belt may be slightly tighter than OEM spec. If it feels too tight, check that the spindles rotate freely and the belt isn’t binding on pulley edges. Some users report needing to adjust belt tension by loosening the idler pulley.
• Lubrication: The spindles come pre-greased, but applying a light coat of grease to the new spindle bearings before installation can extend life.

Should You Buy It

Buy this kit if you have one of the listed John Deere tractors with a 42" or 48" deck and need to replace two spindles on a budget – it’s a solid value for residential mowing. Skip it if you require OEM longevity for frequent commercial use, or if your deck uses a different belt/pulley size.