Mulching Blades 21 Inch for Troy Bilt 942-0741A TB130 TB240 TB160 TB115 Craftsman M230 M250 MTD Cub Cadet Yard Machines/Replaces OEM no. 742-0741 742-0741A 942-0741 CMXGZAM100067 / 2 Pack

What It Is

This 21-inch mulching blade set (2-pack) replaces OEM numbers 742-0741, 742-0741A, 942-0741, and CMXGZAM100067. Designed for Troy-Bilt TB130, TB240, TB160, TB115, Craftsman M230, M250, MTD, and Cub Cadet/Yard Machines with a 21-inch cutting deck. The curved fins and sharpened edge recirculate grass clippings for finer mulching.

Fitment & Compatibility

• Check your deck size: Must be exactly 21 inches. Measure your existing blade from tip to tip.
• Model numbers: Verify your mower model (e.g., TB130, M230) is listed. Many MTD, Cub Cadet, and Yard Machines models with a 21-inch deck also use this blade.
• OEM cross-reference: Confirms fit for 742-0741, 742-0741A, 942-0741, and CMXGZAM100067. If your current blade has one of these numbers stamped on it, this is a direct replacement.
• Center hole & drive: Standard oval center hole (approx. 1” x 0.5”). Fits most 21-inch push mowers with a single-bolt blade mount.
• What to measure: Blade length (21”), center hole shape, and thickness (typically 0.150–0.165”). If your existing blade is a different shape or has a star/hex hole, this won’t fit.

Key Things to Know

• Quality: This is OEM-quality (Cub Cadet brand) steel, not a generic aftermarket blade. Expect good balance and edge retention.
• Installation: Easy—remove the old blade (block the blade with a piece of wood), install the new one with the fins pointing up toward the deck. Torque the bolt to 30–40 ft-lbs.
• Gotcha: Mulching blades work best with a mulching plug or baffle installed. If your mower has a side discharge, you’ll still get some mulching but not the full benefit.
• Only one review: The 5.0 rating is from a single buyer. No long-term durability data yet, but Cub Cadet’s reputation is solid.

Should You Buy It

Buy these if you have a compatible 21-inch Troy-Bilt, Craftsman, MTD, or Cub Cadet mower and want OEM-quality mulching blades at a fair price. They’re a direct replacement for the listed OEM numbers and will save you time hunting for exact matches. Skip them if your mower uses a different blade length, hole shape, or if you only need a standard lift blade for bagging.