Grasscool 21 inch Mower Blade Replace Troy Bilt 942-0741A for TB110 TB240 TB230 TB130 TB200 TB160 TB210 TB280ES TB320 TB115 TB220 21" Walk Behind Push 742-0741A Mulching

What It Is

This is a 21-inch universal mulching blade designed to replace OEM part 942-0741A (and 742-0741A) for select Troy-Bilt walk-behind push mowers. It’s built for cutting grass and mulching clippings into fine particles to return nutrients to the lawn.

Fitment & Compatibility

Check these before buying:

• Deck size: Must be exactly 21 inches. Measure your existing blade tip-to-tip.
• Center hole: 1-inch diameter round hole. Verify your spindle’s center bolt matches.
• Offset/Height: Blade has a 0.75-inch offset (crank) to clear the spindle. Measure your old blade’s offset to confirm.
• Model fit: Fits Troy-Bilt TB110, TB115, TB120, TB130, TB160, TB200, TB210, TB220, TB230, TB240, TB280ES, TB320. Also fits some Craftsman, Husqvarna, and Poulan Pro models with the same 21-inch deck and 1-inch hole. Check your owner’s manual or current blade part number.
• OEM replacement: Direct replacement for Troy-Bilt 942-0741A and 742-0741A. Not original equipment, but dimensionally identical.

Key Things to Know

• Mulching vs. regular blades: This blade has a curved, angled design to circulate clippings for finer cutting. If you bag or side-discharge, consider a standard lift blade instead.
• Installation difficulty: Easy (10 minutes). Remove spark plug wire, tip mower, remove center bolt, swap blade, torque to 30-40 ft-lbs. Use thread locker if bolt is loose.
• Sharpness out of box: Blades are sharp but not razor-finished. Lightly file the edge if you want a cleaner cut.
• Durability: Made of heat-treated steel. Resists bending on small rocks but will dull faster on sandy soil. Expect 2-3 seasons with regular use.

Should You Buy It

Buy this if you have a compatible 21-inch Troy-Bilt push mower and want an affordable, direct-fit mulching blade with proven reliability (4.8 stars from 2,000+ reviews). Skip if you need a bagging or lift blade, or if your mower uses an irregular center hole or offset.