4PK USA Toothed Mulching Mower Blades for 42" Craftsman T110 13AN77XS093

What It Is

This is a set of four toothed mulching blades designed for 42-inch cutting decks, specifically engineered to chop grass clippings into fine particles for natural lawn fertilization. They’re a direct replacement for the OEM blades on the Craftsman T110 (model 13AN77XS093) and other compatible 42-inch Craftsman/MTD tractors.

Fitment & Compatibility

Before buying, confirm these three things:

• Deck size: Must be exactly 42 inches. Measure deck width or check your mower’s model tag (e.g., 13AN77XS093). This set will not fit 46-inch or 54-inch decks.
• Blade measurements: Each blade is roughly 21 inches long, with a 1-inch center hole and a 7-point star drive (toothed pattern). Measure your current blade length and center hole shape. Standard 5-point star or round hole blades are incompatible.
• OEM vs aftermarket: These are aftermarket blades, not genuine Craftsman. They’re a direct fit for the T110 and many MTD-based 42-inch tractors (e.g., Troy-Bilt, Cub Cadet). Check your owner’s manual for blade part numbers (usually 742P or 942 series) to confirm.

Key Things to Know

• Mulching vs bagging: These blades are optimized for mulching. If you frequently bag or side-discharge, consider a standard lift blade instead.
• Installation difficulty: Moderate. You’ll need a socket wrench and a torque wrench (blade bolt torque: 70-90 ft-lbs). Always disconnect the spark plug and block the blade before removing.
• Common gotchas: The toothed star drive must align perfectly with the spindle’s star pattern—forcing it can strip the spindle. Also, these blades are heavier than standard blades; check your spindle bearings for wear before installation.
• Durability: Heat-treated steel holds an edge well, but hitting rocks or roots will dull them faster than standard blades. Sharpen after 10-15 hours of use.

Should You Buy It

Buy these if you have a Craftsman T110 (or similar 42-inch MTD tractor) and primarily mulch your lawn. They’re a well-rated, affordable alternative to OEM blades, but skip them if you bag or side-discharge often—standard lift blades will perform better.