GANCO GX22151 Mower Blades for John Deere 42 Inch Mower X300 E100 D105 D130 Replacement Part Accessories Replace GY20850 AM137333 (Pack of 2 Lawn Mower Toothed Blades)

What It Is

This is a pack of two toothed (mulching) replacement blades for 42-inch John Deere lawn tractors. Designed for cutting grass and mulching leaves, they fit select X300, E100, D100, and 100-series models.

Fitment & Compatibility

Before buying, verify these three things:

• Deck size: Your mower must have a 42-inch cutting deck. Measure deck width if unsure.
• Model compatibility: Fits John Deere X300, E100, D105, D130, D110, D125, D140, D155, D160, D170, LA105, LA115, LA125, LA135, LA145, LA155, LA165, L100, L110, L120, L130, L118, L111, S240, and select Sabre/Scotts models. Check your model number on the deck sticker.
• OEM numbers: Replaces GY20850, AM137333, GY20849, AM137332, GY20101, AM139168. Compare your blade’s center hole (usually 7-point star) and overall length (approx. 21 inches). These are aftermarket, not OEM John Deere.

Key Things to Know

• Toothed design: The serrated edge helps chop clippings finer for mulching, but they won’t bag or side-discharge as cleanly as standard blades.
• Installation: Moderate difficulty. You’ll need a socket wrench and torque wrench (recommended 45–55 ft-lbs). Lift the deck safely—use jack stands, not just the mower’s lift lever.
• Balance: Aftermarket blades can be slightly out of balance. If you feel vibration after install, remove and balance them with a blade balancer ($10–15).
• Durability: GANCO blades are made from hardened steel but may dull faster than OEM John Deere blades, especially on rocky lawns or frequent mulching.

Should You Buy It

If you’re on a budget and need a quick mulching blade set for your 42-inch John Deere, this is a solid value. It’s not for heavy commercial use or if you demand OEM longevity—but for residential mowing and leaf mulching, it gets the job done for half the price of John Deere’s own blades.