DOCAS 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 (2 Pack)

What It Is

This is a 2-pack of DOCAS 21-inch mulching blades designed for Troy-Bilt, Cub Cadet, and MTD push mowers with a 21-inch cutting deck. They replace OEM part numbers 942-0741A, 742-0741, and 742-0741A, and are intended for use on residential mowers where fine grass clippings are desired for lawn feeding.

Fitment & Compatibility

Before buying, verify these three things:

1. Deck size: Your mower must have a 21-inch cutting deck (measured blade tip to blade tip).
2. Model compatibility: Fits Troy-Bilt TB280ES, TB240, TB130, TB230, TB210, TB110, TB220, TB320, and many Cub Cadet and MTD 21-inch push mowers. Check your model number on the mower’s sticker (usually under the seat or on the deck).
3. OEM cross-reference: These replace OEM numbers 942-0741A, 742-0741, and 742-0741A. Measure your old blade’s center hole diameter (should be 1-inch), overall length (21 inches), and thickness (0.20 inches) to confirm match.

Note: Not for zero-turn, riding, or commercial mowers. Verify your deck is a standard 21-inch stamped steel deck, not a fabricated or odd-size deck.

Key Things to Know

• Quality: These are aftermarket blades, not OEM. Users report they are slightly thinner than OEM but cut well for the price. Expect 1-2 seasons of use on a typical lawn.
• Installation: Easy DIY. Jack up the mower, remove the center bolt (usually 5/8-inch), replace the blade, and torque to 30-40 ft-lbs. Always disconnect the spark plug first.
• Mulching vs. bagging: These are mulching blades only—they have a curved, serrated edge to chop clippings fine. They will not bag well; use a separate bagging blade for that.
• Balance: After installation, check blade balance with a blade balancer. Out-of-balance blades cause vibration and damage the spindle.

Should You Buy It

Buy this if you need an affordable, functional mulching blade set for a compatible Troy-Bilt or Cub Cadet 21-inch push mower and you don’t mind aftermarket quality. It’s a solid budget option for homeowners who mow weekly and want fine clippings, but skip it if you need OEM durability or plan to bag clippings with these blades.