405380 Blades for 46 Inch Lawn Mower Blades with 405143 Lawn Mower Deck Drive Belt Compatible with Ariens, Craftsmann YT3000, Husqv-Arna YTH22V46, YTH20K46 Poulann, 21546611, 21546607, 405143

What It Is

This bundle includes two 46-inch compatible lawn mower blades (part 405380) and a deck drive belt (part 405143), designed for residential riding mowers from Ariens, Craftsman, Husqvarna, and Poulan. It’s meant for standard mulching or bagging on 46-inch cutting decks.

Fitment & Compatibility

Before buying, confirm your mower’s deck size is exactly 46 inches (measure from blade tip to tip). The blades fit models like Craftsman YT3000, Husqvarna YTH22V46 and YTH20K46, and Poulan Pro equivalents. The belt (405143) replaces OEM numbers 21546611 and 21546607. Check your mower’s model number and deck diagram—these are aftermarket parts, so verify blade shape (straight vs. curved) and belt length (usually 96.5 inches) match your original. Avoid assuming fitment for non-listed brands.

Key Things to Know

• Quality: Aftermarket blades may dull faster than OEM; inspect for balanced weight before installation to avoid vibration.
• Installation: Requires basic tools (socket wrench, jack stands). Lift the deck safely, remove the center bolt, and note blade orientation (sharp edge faces grass). Belt replacement needs belt routing diagram—take a photo before removal.
• Gotcha: The belt may need tension adjustment after first use; check for slippage. Blades may be thinner than OEM, so avoid hitting rocks or roots.
• Compatibility: Not for zero-turn mowers or 42-inch decks; double-check belt length if your model uses a different pulley setup.

Should You Buy It

This is a budget-friendly option for DIY homeowners with a compatible 46-inch riding mower who need both blades and a belt in one go. It’s not ideal for heavy commercial use or if you prefer OEM durability. If your mower is listed and you’re comfortable with basic maintenance, it’s a solid value.