Toothed Blade Replaces GX21784, GY20852, AM141035, GX21786, Compatible with John De ere D140, E140, LA145, D160, S170, E170, E160, Z355E, D155, Z255, LA130 48" Deck Lawn Mower（3PCS）

What It Is

This 3-pack of toothed mulching blades replaces OEM parts GX21784, GY20852, AM141035, and GX21786. Designed for 48-inch John Deere decks on models like D140, E140, LA145, D160, S170, E170, E160, Z355E, D155, Z255, and LA130, they cut grass into fine clippings for mulching or bagging.

Fitment & Compatibility

Before buying, confirm your mower has a 48-inch deck and uses blades with a 1-inch center hole, 2.75-inch blade length, and 0.25-inch thickness. Measure your existing blade’s length (from tip to center hole) and width (cutting edge to back). These blades are aftermarket, not OEM, so verify your deck’s spindle pattern—most John Deere 48-inch decks use a three-blade setup, but check your model’s manual. They do not fit 42-inch or 54-inch decks.

Key Things to Buy

• Quality: Toothed design aids mulching but may dull faster than standard high-lift blades in sandy or rocky soil. Inspect after 10–15 hours of use.
• Installation: Straightforward with a socket wrench and torque wrench (target 45–55 ft-lbs). Use a blade removal tool or block the blade to avoid spinning. Reinstall with the toothed edge facing the deck (not the ground).
• Gotchas: These blades are not for side-discharge only—they work best with a mulching plug or bagger. If your deck has a discharge chute, expect clumping in wet grass. Balance each blade after installation using a blade balancer to reduce vibration.
• Compatibility: Not for zero-turn models with different spindle spacing (e.g., Z355E may require checking spindle arm offset). Measure your deck’s blade bolt pattern if unsure.

Should You Buy It

If you own a 48-inch John Deere and want an affordable mulching upgrade for bagging or fine clippings, this 3-pack is a solid value. Skip it for side-discharge-only use or if you need heavy-duty blades for rough terrain—opt for OEM or high-lift blades instead.