942-0741A Gator Mulching Blade for 21" Deck, 742-0741A Mower Blade Compatible with Troy-Bilt MTD Cub Cad et Craftsman, Replaces 942-0741, 742-0741, 942-04276, 742-04276, 2 Pack

What It Is

This is a 2-pack of mulching blades for 21-inch walk-behind mower decks, designed to chop grass clippings into fine particles for nutrient recycling. It’s a direct replacement for Troy-Bilt, MTD, Cub Cadet, and Craftsman mowers using OEM part numbers 942-0741A, 742-0741A, 942-0741, 742-0741, 942-04276, or 742-04276.

Fitment & Compatibility

• Deck size: Only fits 21-inch cutting decks. Measure your deck from left to right (not the blade itself) to confirm.
• Brands & models: Compatible with many Troy-Bilt, MTD, Cub Cadet, Craftsman, Yard Machines, and Bolens walk-behinds from the 2000s onward. Check your mower’s model number or OEM blade part number against the list above.
• Blade dimensions: 21.25 inches long, 0.25 inches thick, 2.75-inch center hole, 0.5-inch center pin. Measure your current blade’s length, hole size, and pin diameter to verify.
• OEM vs aftermarket: This is an OEM Troy-Bilt blade, not a generic. Fit is exact for listed models.
• What to check: Confirm your deck uses a single center bolt (most do). If your mower has a dual-blade system or a different spindle pattern, these won’t work.

Key Things to Know

• Mulching performance: The “gator” design has serrated edges that shred clippings finer than standard flat blades. Best for frequent mowing (don’t let grass get too tall).
• Installation: Straightforward—remove the center bolt, swap blades, torque to 35-50 ft-lbs. No special tools needed. Ensure blade is oriented with the raised wing facing upward (toward the deck).
• Common gotcha: These are thicker (0.25 in) than some stock blades. If your mower has a thin washer/spacer system, the extra thickness might require a longer bolt or spacer adjustment. Check clearance before tightening.
• Durability: Heat-treated steel holds an edge well, but hitting rocks or roots will chip the serrations. Inspect regularly for bending or cracking.

Should You Buy It

Buy these if you have a 21-inch Troy-Bilt/MTD/Cub Cadet/Craftsman mower, want OEM-grade fit and fine mulching action, and mow frequently enough to avoid tall grass clogs. Skip them if your deck isn’t 21 inches, you need a bagging or side-discharge blade, or you’re on a tight budget—these are premium-priced but proven.