Reliable Aftermarket Parts Mulching Blade

This blade is designed for specific Troy Bilt models, including the 17ARCACK011. Before purchasing, verify your mower's model number and check that your current blade matches the 18.5-inch length and 6-point star center hole pattern.

Mulching blades feature a more aggressive curve and extended cutting edge compared to standard blades. This design creates increased airflow inside the mower deck, which lifts grass clippings and recuts them into finer particles before depositing them back into the lawn.

Yes, a 0.204-inch thickness is considered heavy-duty for residential and commercial-grade mower blades. This extra steel provides better structural integrity, helping the blade resist bending or chipping when encountering thick grass or debris.

Compatibility is strictly determined by the center hole shape and the deck size. Unless your mower specifically requires an 18.5-inch blade with a 6-point star center hole, this part will not fit properly and should not be used.

Like any cutting tool, this blade should be inspected regularly for dullness or damage. To maintain optimal mulching performance, sharpen the edges at the start of the season and check for balance whenever you remove the blade for cleaning.