Stens Mulching Blade 330-441 Compatible with John Deere 102, 115, 125, 135, D100, D110, D120, D130, LA100, LA120, LA135, X110, X120, X300 and Z225, Requires 2 for 42" Deck AM137328, AM137333

What It Is

The Stens Mulching Blade 330-441 is a replacement blade designed for 42-inch cutting decks on select John Deere lawn tractors and zero-turn mowers. It’s built for mulching grass clippings into fine particles that decompose quickly, reducing bagging needs and improving lawn health.

Fitment & Compatibility

Before buying, verify your mower’s deck size is exactly 42 inches. This blade fits John Deere models: 102, 115, 125, 135, D100, D110, D120, D130, LA100, LA120, LA135, X110, X120, X300, and Z225. It replaces OEM part numbers AM137328 and AM137333. The blade measures 21 inches long with a 1-inch center hole and 7/8-inch offset. You need two blades per deck—do not mix with standard or high-lift blades on the same spindle. Confirm your mower uses a two-blade setup (most 42-inch Deeres do) and check that your blade mounting bolts are 5/16-inch diameter.

Key Things to Know

• Quality: Stens is a reputable aftermarket brand; blades are heat-treated and coated for durability, but not as thick as OEM heavy-duty options.
• Installation: Easy swap—remove the old blade, clean the spindle, and torque bolts to 30-40 ft-lbs. Use a blade removal tool to avoid spinning.
• Common gotcha: Mulching blades work best with a mulching plug installed and at higher deck settings. If you frequently bag, these blades may clog in wet grass.
• Performance: They leave a finer cut than standard blades but may reduce lift in tall or damp conditions—sharpen annually for best results.

Should You Buy It

Buy this if you have a 42-inch John Deere lawn tractor or Z225 and primarily mulch grass. It’s a solid, cost-effective alternative to OEM blades for routine mulching, but skip it if you need heavy-duty bagging or cutting in wet, thick turf—stick with OEM or high-lift blades for those jobs.