Grasscool 42 inch Mower Mulching 6 Star Blades Replace Troy Bilt Cub Cadet 942-0616A for Bronco Pony XT1 LT42 42" Deck Zero Turn Lawn Tractor 742-0616A 742-0616

What It Is

This is a set of six mulching blades designed for 42-inch cutting decks on Troy-Bilt, Cub Cadet, and similar lawn tractors. They replace OEM part numbers 942-0616A and 742-0616A, and are intended for mulching grass clippings into fine particles to return nutrients to the lawn.

Fitment & Compatibility

Before buying, confirm your deck measures exactly 42 inches from blade tip to tip. These blades fit Troy-Bilt Bronco, Pony, and XT1 models, plus Cub Cadet LT42 and certain zero-turn mowers with a 42-inch deck. Check your current blade’s part number—if it’s 942-0616A or 742-0616A, these are direct replacements. Aftermarket blades may have slight variations in hole alignment or thickness; measure your spindle bolt pattern (typically a 5-point star center hole) to ensure a match. Avoid assuming fit for non-listed brands like John Deere or Husqvarna without verifying deck dimensions and blade geometry.

Key Things to Know

• Quality vs OEM: These are aftermarket blades, often made from hardened steel. They may not match OEM sharpness out of the box—some users report needing to sharpen before first use for best mulching performance.
• Installation: Easy if you have a socket wrench and blade removal tool. Always disconnect the spark plug and lift the mower safely. Torque blade bolts to 70-80 ft-lbs (check your manual).
• Common Gotcha: Star center hubs can be tight on some spindles. If they don’t slide on, lightly file the hub or check for burrs. Never force—damage to the spindle is costly.
• Lift and Mulching: The curved design creates lift for finer clippings, but works best with a mulching plug installed and dry grass. Wet or tall grass may clump.

Should You Buy It

If you own a compatible 42-inch Troy-Bilt or Cub Cadet and want a budget-friendly mulching blade set that performs well in dry conditions, this is a solid choice. It’s not for heavy-duty bagging or side-discharge use, and you may need to sharpen it initially. For occasional mulching on a residential lawn, it’s a reliable, cost-effective replacement.