38 Inch Deck Mower Blades Fit for John Deere LT150 LT160 STX38 LX188 X300 X310 F525 GT275 Lawn Mower Replaces OEM AM141040 (Mulching) 2 Pack

What It Is

This is a 2-pack of mulching blades for 38-inch cutting decks, designed to fit John Deere LT150, LT160, STX38, LX188, X300, X310, F525, and GT275 lawn tractors. They replace OEM part AM141040, cutting grass into finer clippings for nutrient recycling.

Fitment & Compatibility

• Deck size: Only for 38-inch decks. Measure your deck’s cutting width (blade tip to tip) to confirm—38 inches is common on the listed models, but some variants use 42-inch decks.
• Model check: Verify your tractor’s model number on the frame or under the seat. The STX38, LX188, and X300/X310 use this fitment, but older or newer revisions may differ.
• OEM vs aftermarket: These are aftermarket replacements for AM141040. Aftermarket blades may require minor fitment tweaks (e.g., centering washer thickness). Check that center hole diameter is 1 inch (standard for these models) and blade length is 18 inches (tip to tip).
• Installation note: Ensure the blade orientation matches your deck’s spindle rotation (usually clockwise on John Deere). Mulching blades have a curved wing; the cutting edge should face upward.

Key Things to Know

• Mulching vs bagging: Mulching blades have a deeper curve and more lift than standard blades. They work best with a mulching plug installed and dry grass; wet clippings may clump.
• Installation difficulty: Easy—requires a socket wrench, torque wrench (recommended 70–100 ft-lbs), and safety glasses. No special tools needed, but double-check blade balance after tightening.
• Quality: Price is low for a 2-pack; expect basic steel with a paint coating. Some users report shorter lifespan than OEM (especially in sandy soil). Inspect for warping after first use.
• Gotcha: These blades may not fit decks with a 2-inch center hole or offset spindles (rare on these models). Measure your old blade’s center hole and thickness (0.25 inch typical) before buying.

Should You Buy It

If you own a compatible 38-inch John Deere lawn tractor and want a budget-friendly mulching option for occasional mowing, this 2-pack is a solid value. Skip it if you have a larger deck, need heavy-duty blades for rocky terrain, or prefer OEM fitment for guaranteed balance and longevity.