8TEN LawnRAZOR Mower Blade 20 inch Deck for Craftsman Husqvarna Poulan 134871 145106 146749 532145106 PP22055 (Mulching)

What It Is

The 8TEN LawnRAZOR Mower Blade is a 20-inch mulching blade designed for Craftsman, Husqvarna, and Poulan walk-behind mowers. It replaces OEM part numbers 134871, 145106, 146749, 532145106, and PP22055, and is intended for cutting grass into fine clippings that decompose quickly.

Fitment & Compatibility

Before buying, confirm your deck size is exactly 20 inches (measure from blade tip to blade tip). This blade fits most Craftsman, Husqvarna, Poulan, and compatible MTD/Poulan Pro mowers using the listed OEM numbers. Check your current blade’s center hole diameter (typically 1-inch or 7/8-inch) and ensure your mower’s spindle matches—this blade uses a standard 1-inch center hole with a 1-inch pilot. Also verify the blade’s overall length (20 inches) and that the sail height matches your deck’s clearance. If your mower uses a different OEM number, cross-reference with a fitment chart or measure your old blade.

Key Things to Know

• Quality: Made from heat-treated steel; edges may come slightly dull—sharpen before first use for best mulching performance.
• Installation: Easy swap with a socket wrench; use a blade removal tool or block the blade to prevent spinning. Torque bolts to 30-40 ft-lbs.
• Common Gotchas: This is a mulching blade, not a standard lift blade—it may leave longer clippings in tall or wet grass. Check for washer/bolt compatibility; some mowers require a separate washer kit.
• Balance: Always balance the blade after sharpening to avoid vibration and spindle damage.

Should You Buy It

Buy this if you need a budget-friendly, direct-fit mulching blade for a 20-inch Craftsman, Husqvarna, or Poulan mower and you’re comfortable with basic installation and sharpening. It’s a solid value for the price, but skip it if you prefer a high-lift blade for bagging or if your mower uses a non-standard spindle size.