DOCAS 1pc 21 inch Mower Mulching Blades for Troy Bilt TB280ES TB240 TB130 TB230 TB210 TB110 TB220 TB320 Cub Cadet MTD 21" Deck Replace for 942-0741A 742-0741 742-0741A 942-0741 (1 pc)

What It Is

This is a single 21-inch mulching blade designed to replace the OEM blade on select Troy-Bilt, Cub Cadet, and MTD walk-behind mowers with a 21-inch cutting deck. It’s meant for mulching grass clippings into fine particles that decompose quickly, reducing bagging needs.

Fitment & Compatibility

Before buying, confirm your mower has a 21-inch deck—not 20, 22, or other sizes. This blade replaces OEM part numbers 942-0741A, 742-0741, 742-0741A, and 942-0741. Compatible models include Troy-Bilt TB280ES, TB240, TB130, TB230, TB210, TB110, TB220, TB320, and Cub Cadet/MTD equivalents with the same deck and spindle. Check your current blade’s center hole diameter (should be 1-inch) and overall length (21 inches). If your mower uses a different blade pattern (e.g., offset or high-lift), this won’t work.

Key Things to Know

• Quality: Made from hardened steel, but some users report it’s slightly thinner than OEM. Inspect for burrs or uneven edges before installing.
• Installation: Easy—remove the old blade (disconnect spark plug first), clean the spindle, and bolt this on. Torque to 35–50 ft-lbs. No special tools beyond a socket wrench.
• Gotcha: This is a single blade (1 pc), not a set. If your mower uses two blades (unlikely for 21-inch decks), you’ll need two.
• Performance: Mulches well on dry grass but may clog in wet or tall grass. Sharpen after 10–15 hours of use for best results.

Should You Buy It

If you need a budget-friendly replacement for a 21-inch Troy-Bilt or Cub Cadet mower and primarily mulch dry grass, this blade works fine. For heavy use or wet conditions, consider a thicker OEM blade instead.