138971 42 inch 5-Star Mulching Toothed Blades for Craftsman LT1000 LT2000 YT3000 T110 Husqvarna YTH22V42 YTH18542 YTA18542 Poulan 42'' Deck Cut Lawn Tractor Zero-Turn Mower 127843 532138971, Blue

What It Is

This is a set of three 42-inch mulching blades with a toothed, 5-star design. They are built for Craftsman, Husqvarna, and Poulan lawn tractors and zero-turn mowers with a 42-inch cutting deck, intended for fine clippings that break down quickly.

Fitment & Compatibility

• Deck size: Only fits 42-inch decks. Measure your deck width before ordering.
• Model fit: Confirmed for Craftsman LT1000, LT2000, YT3000, T110; Husqvarna YTH22V42, YTH18542, YTA18542; and Poulan 42-inch cut models. Check your mower’s model number under the seat or on the frame.
• OEM cross-reference: Replaces OEM part numbers 138971, 127843, and 532138971. These are aftermarket blades, not original Craftsman/Husqvarna.
• Blade measurements: Each blade is roughly 21 inches long, 2.5 inches wide, with a 1-inch center hole and a 0.5-inch offset. Verify your spindle’s hole size and blade thickness to avoid wobble.
• Zero-turn note: Fits some zero-turn mowers with a 42-inch deck, but confirm your spindle pattern (usually 3-blade, 5-point star) matches.

Key Things to Know

• Mulching vs. bagging: These are mulching blades—they’ll leave finer clippings than standard blades. Not ideal for side-discharge or bagging unless you remove the mulch plug.
• Installation: Straightforward if you have a socket set and a torque wrench (tighten to 70-90 ft-lbs). The toothed edge sharpens clippings but can dull faster on rocky lawns.
• Common gotchas: Some users report the blades are slightly thinner than OEM, which may cause vibration on high-speed decks. Check for balance before installing—unbalanced blades can damage spindles.
• Hardware: Blades come with new washers/bolts, but reuse your original spindle hardware if yours are in good shape.

Should You Buy It

Buy these if you have a 42-inch Craftsman, Husqvarna, or Poulan tractor and want a budget-friendly mulching upgrade that produces fine clippings. Skip them if you need OEM-grade thickness for heavy-duty commercial use or if your deck is not exactly 42 inches—measure first to avoid a return.