106-2247-03 Mulching Blade Compatibles with to ro 42" Deck, 106-8744-03 Mulching Blade Compatibles with to ro Time Cutter Z420 Z4200 Z4202 ZS4200 ZS4202 Z530, Replaces for 110-1857-03, 2 Pack

What It Is

This is a 2-pack of aftermarket mulching blades designed for 42-inch Toro riding mowers, specifically the TimeCutter Z-series (Z420, Z4200, Z4202, ZS4200, ZS4202, Z530) and other Toro models with a 42" deck. The blades use a high-lift wing design to recut clippings into fine mulch for even dispersal.

Fitment & Compatibility

Before buying, verify these three things:

1. Deck size – Must be a 42-inch cutting deck. Measure deck width if unsure.
2. Model number – Confirmed fit for Toro TimeCutter Z420, Z4200, Z4202, ZS4200, ZS4202, Z530. Also fits other Toro 42" decks using OEM part 106-8744-03 or 110-1857-03.
3. Physical specs – Blade length is ~21 inches, center hole is 1" round (typical for Toro), with a 0.25" thick steel body. Check your current blade for matching hole shape and thickness.

These are aftermarket replacements for OEM 106-8744-03 and 110-1857-03. They will not fit 42" decks from other brands (e.g., John Deere, Craftsman) without verifying center hole and spindle design.

Key Things to Know

• Quality – Rated 4.8/5 from 53 reviews. Users report sharp edges out of the box and balanced blades that reduce vibration. Steel is heat-treated for durability but not as heavy-duty as OEM Toro blades.
• Installation – Moderate difficulty. You’ll need a socket wrench and a block of wood to lock the blade. Torque to 70-90 ft-lbs. Always use thread-locker on the bolt.
• Common gotchas – The mulching wing profile is more aggressive than standard blades; expect slightly shorter battery runtime on electric mowers. These blades are not for bagging or side-discharge use.
• Pack size – 2-pack is cost-effective but only one mower; store the spare in a dry place to prevent rust.

Should You Buy It

If you own a Toro TimeCutter Z-series with a 42" deck and want a budget-friendly mulching upgrade that’s well-reviewed and ready to install, this is a solid choice. Avoid it if you need OEM-grade steel for heavy commercial use or if your deck uses a different blade length or center hole.