138971 42 inch 5-Star Mulching Blades for Craftsman LT1000 LT2000 YT3000 T110 Husqvarna YTH22V42 YTH18542 YTA18542 Poulan 42'' Deck Cut Lawn Tractor Zero-Turn Mower 127843 532138971 2-Pack, Blue

What It Is

This is a set of two 42-inch five-star mulching blades designed for residential lawn tractors and zero-turn mowers with a 42-inch cutting deck. They’re intended for fine mulching—chopping clippings into small particles that decompose quickly—rather than side discharge or bagging.

Fitment & Compatibility

Before buying, confirm three things:

• Deck size: Your mower must have a 42-inch cutting deck. Measure deck width or check your model specs—this won’t fit 46-inch or 54-inch decks.
• Blade dimensions: Each blade is 21 inches long (center hole to tip), with a 1-inch center hole and a 3/4-inch offset. Measure your old blade length, center hole diameter, and offset to verify match.
• Model/brand cross-reference: This blade replaces OEM part numbers 138971, 127843, and 532138971. It fits many Craftsman (LT1000, LT2000, YT3000, T110), Husqvarna (YTH22V42, YTH18542, YTA18542), and Poulan models with a 42-inch deck. Double-check your mower’s model number and deck part number against the compatibility list—some older or non-standard decks may differ.

Key Things to Know

• Quality: Blue-coated finish resists rust and corrosion. Five-star design provides aggressive mulching action, but blades are stamped steel, not forged—adequate for residential use but not for heavy commercial cutting.
• Installation: Straightforward if you have a socket wrench and a blade removal tool. Note the blades are not universal—they have a specific offset and hole pattern. Torque to manufacturer spec (typically 70–90 ft-lbs) and re-check after first use.
• Common gotchas: These are mulching-only blades. If you need side discharge or bagging, look for a different blade profile. The 2-pack covers one spindle—if your deck has three spindles, you’ll need two packs.
• Sharpness: They come sharp but may need a quick touch-up after a few hours if you cut thick or wet grass.

Should You Buy It

If you own a 42-inch deck Craftsman, Husqvarna, or Poulan lawn tractor and want a budget-friendly mulching upgrade that improves clipping breakdown and reduces bagging frequency, this is a solid choice. Skip it if you need side-discharge blades or have a commercial-grade mower.