21 Inch Lawn Mower Blade | 3-in-1 High Lift Mulching - Replaces 942-0741, 942-0741A, 742-04100, 742-0741, Fits TB110, TB130, TB200, TB230, TB240

What It Is

This is a 21-inch 3-in-1 high-lift mulching blade designed to replace OEM part numbers 942-0741, 942-0741A, 742-04100, and 742-0741. It’s intended for Troy-Bilt TB110, TB130, TB200, TB230, and TB240 push mowers, offering mulching, bagging, and side-discharge capability in one blade.

Fitment & Compatibility

Before buying, confirm your mower deck is exactly 21 inches—measure from outer tip to outer tip of your current blade. This blade fits Troy-Bilt TB-series models listed, but verify your specific model number (e.g., TB110, TB230) on the mower’s sticker under the seat or on the deck. It replaces OEM parts 942-0741, 942-0741A, 742-04100, and 742-0741. Check the center hole diameter (typically 1-inch or 7/8-inch) and the blade’s thickness (usually 0.25 inches). Avoid assuming it fits other brands like Craftsman or MTD—cross-reference your OEM number first.

Key Things to Know

• High-lift design increases airflow for better bagging and mulching, but it may strain smaller engines in thick grass. Keep blades sharp to reduce drag.
• Installation is straightforward with a socket wrench and torque to 40-50 ft-lbs. Use the included washer orientation—curved side down on high-lift blades.
• Balance is critical after sharpening or if the blade is new. Use a blade balancer; an unbalanced blade causes vibration and deck damage.
• Only 2 reviews at 4.5 stars—limited feedback. The price ($36.99) is typical for an aftermarket replacement but higher than generic blades; check if OEM parts are cheaper from your dealer.

Should You Buy It

If you own a Troy-Bilt TB110, TB130, TB200, TB230, or TB240 with a 21-inch deck and need a reliable 3-in-1 blade for mulching or bagging, this is a solid aftermarket choice. It’s best for users comfortable with basic installation and blade balancing. For heavy-duty or commercial use, consider an OEM blade for proven durability.