106-2247-03 Mulching Blade Compatibles with to ro 42" Cutting Deck, 106-8744-03 110-1857-03 Mulching Blade Compatibles with to ro TimeCutter Z420/Z4200/Z4202/ZS 4200/ZS 4200S/Z4220/Z4235，2 Pack

What It Is

This is a 2-pack of aftermarket mulching blades (model 106-2247-03) designed for Toro 42-inch cutting decks, specifically the TimeCutter Z420, Z4200, Z4202, ZS 4200, ZS 4200S, Z4220, and Z4235 zero-turn mowers. They replace OEM part numbers 106-8744-03 and 110-1857-03. Mulching blades have a curved, serrated shape to chop grass finer and recirculate clippings for a clean, no-bag cut.

Fitment & Compatibility

Before buying, verify these three things:

• Deck size: Must be exactly 42 inches. These blades will not fit 44-, 48-, or 50-inch decks.
• Model number: Confirm your mower is one of the listed TimeCutter Z models (check the sticker under the seat or frame). The listing covers Z420, Z4200, Z4202, ZS 4200, ZS 4200S, Z4220, Z4235—but not older Z-series or other Toro lines like SS or MX.
• OEM part cross-reference: These replace Toro 106-8744-03 and 110-1857-03. If your current blade has a different number (e.g., 108-8744-03), measure center hole diameter (should be 1-inch) and overall length (about 16.5 inches) to confirm match. Aftermarket blades can vary slightly in thickness and balance.

Key Things to Know

• Quality note: At $27 for two, these are budget aftermarket blades. They’ll cut fine for residential use, but may dull faster than OEM Toro blades (which cost ~$25 each). Expect to replace them yearly or after heavy use.
• Installation: Moderate difficulty. 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 loosening. Center hole fit is usually snug but not sloppy.
• Common gotcha: These blades are stamped steel, not heat-treated or coated like premium options. They’re lighter than OEM—check balance by hanging on a nail before installing. If one side dips, don’t use it; return for a replacement.
• Mulching performance: Works best with dry, short grass (under 3 inches). Wet or tall grass will clump. For bagging or side-discharge, stick with OEM high-lift blades.

Should You Buy It

Buy these if you own a Toro TimeCutter Z with a 42-inch deck, need a quick, affordable 2-pack for mulching, and don’t mind replacing blades more often. Skip them if you want OEM durability, cut heavy or wet grass regularly, or need a blade for a different deck size or brand. They’re a solid value for light-to-moderate residential use.