AM130172 Mower Blades Fit for John Deere LT155 LT160 LT166 LT170 LT180 GX355 SST16 X324 LT133 Freedom Dedicated Mulching Mower Replaces OEM AM130172 AM128013 AM126023

What It Is

This is a set of three mulching blades designed to replace OEM AM130172, AM128013, and AM126023 on select John Deere lawn tractors. They are intended for dedicated mulching, meaning they cut grass finely and leave it on the lawn as fertilizer, rather than bagging or side-discharging.

Fitment & Compatibility

Check these three things before buying:

1. Deck size: These blades fit 42-inch and 48-inch cutting decks. Measure your deck width (blade tip to tip) to confirm. Common compatible decks include the 42-inch Edge and 48-inch 7-Iron/Accel Deep.
2. Model list: Officially fits John Deere LT155, LT160, LT166, LT170, LT180, LT133, GX355, SST16, X324, and Freedom. Not all models in these series use the same blade—double-check your model’s OEM part number.
3. OEM vs. aftermarket: This is a non-OEM replacement. It should physically fit, but blade thickness, balance, and steel quality may differ from John Deere originals. Measure your existing blade length (approx. 21 inches) and center hole diameter (approx. 1 inch) to be safe.

Key Things to Know

• Installation difficulty: Easy. Requires a socket wrench and torque wrench (recommended 70-90 ft-lbs). Lift the deck safely—use jack stands, not just a jack.
• Mulching performance: Dedicated mulching blades have a curved, high-lift design that recirculates clippings. They work best with dry grass and at slower ground speeds. Wet or tall grass may cause clumping.
• Common gotcha: These blades are not for bagging or side-discharge. If you switch between mulching and bagging, you’ll need a different blade set. Also, verify your deck uses three blades (not two)—some 42-inch decks use two blades.
• Quality check: With only 2 reviews, buy from a seller with a clear return policy. Inspect blades for warping or uneven edges before installing.

Should You Buy It

If you own one of the listed John Deere models and want a dedicated mulching setup at a lower price than OEM, this is a reasonable choice. But with limited reviews, you’re taking a small risk on blade balance and longevity. It’s best for DIY owners who are comfortable verifying fitment and doing their own installation.