942-0741A 21 Inch Mulching Mower Blade Compatible with Troy-Bilt TB110 TB230 TB240 TB130 TB200 TB160 TB210, MTD Cub Cadet Craftsman Walk Behind Mowers, Replaces 742-0741A CMXGZAM100067, 1 Pack

What It Is

This is a 21-inch mulching mower blade designed to cut grass into fine clippings that decompose quickly, returning nutrients to the lawn. It fits select Troy-Bilt, MTD, Cub Cadet, and Craftsman walk-behind mowers with 21-inch cutting decks.

Fitment & Compatibility

Before buying, confirm three things:

• Deck size: Must be exactly 21 inches (measure your mower deck, not the blade).
• Model number: Works with Troy-Bilt TB110, TB130, TB200, TB210, TB230, TB240, TB160, and MTD/Cub Cadet/Craftsman walk-behinds with similar decks. Check your mower’s model tag under the seat or on the deck.
• OEM replacement: Replaces OEM part 742-0741A and CMXGZAM100067. Aftermarket, but matches OEM dimensions—center hole (usually 7/8-inch diameter), blade length, and offset. If your mower uses a different blade pattern (e.g., straight or lift blade), this mulching blade won’t interchange.

Key Things to Know

• Quality: 5.0-star rating from 3 reviews is limited. Cub Cadet brand suggests decent steel, but aftermarket blades can dull faster than OEM. Inspect for warping before install.
• Installation difficulty: Easy—requires a socket wrench and a block of wood to lock the blade. Torque the blade bolt to 30–50 ft-lbs (check your manual).
• Common gotchas: Mulching blades work best with a clean deck and sharp blade. Dull mulching blades tear grass, causing brown tips. Also, this is a single blade—if your mower uses a two-blade system (rare for 21-inch decks), it won’t fit.
• Performance: Mulching blades need slower mowing speeds and dry grass to avoid clumping. Not ideal for bagging or side-discharge unless you modify the deck.

Should You Buy It

Buy this if you have a compatible 21-inch Troy-Bilt, MTD, Cub Cadet, or Craftsman walk-behind mower and want fine mulching for a healthy lawn. It’s a solid budget-friendly replacement for OEM blades, but verify fitment first—measure your deck and check your model number. If you need a high-lift blade for bagging or tough grass, look elsewhere.