Parts 4 Outdoor

What It Is

This is a replacement blade for walk-behind lawn mowers, designed to fit most standard 21-inch deck models. It’s a universal aftermarket blade intended for residential grass cutting, not for mulching or bagging-specific systems.

Fitment & Compatibility

Before buying, measure your current blade’s length (center hole to tip) and width—this blade fits 21-inch decks with a standard 1-inch center hole and 5-point star pattern. Check your mower’s brand: it works with most Craftsman, Husqvarna, Murray, and MTD models, but not all. Verify the blade’s part number against your owner’s manual (OEM equivalents are often 942-xxxx or 742-xxxx series). Avoid if your deck is 20-inch or 22-inch—this blade won’t fit. Also confirm the blade’s thickness (usually 0.10–0.13 inches) matches your spindle’s clearance.

Key Things to Know

• Quality: Single blade, not a set. Steel is medium-grade—good for occasional use but won’t outlast OEM high-carbon blades. May require balancing before installation.
• Installation: Easy if you have a socket wrench and blade removal tool (or block the blade). Torque to 30–40 ft-lbs; overtightening can strip the spindle.
• Common gotchas: The 5-point star pattern fits many, but some newer Honda or Toro decks use a different center hole. Double-check the star pattern—some aftermarket blades are slightly off, causing wobble.
• Price: $36.99 is steep for a single aftermarket blade; OEM equivalents often cost less or come in pairs.

Should You Buy It

Buy this only if you need a quick replacement for a standard 21-inch deck and your local store is out of stock. Otherwise, skip it—the price is high for a single blade, and OEM or multi-pack options offer better value and durability for regular mowing.