Aeagle 138971 Mulching Toothed Blades for Craftsman LT1000 LT2000 T110 YT3000 Husqvarna YTH22V42 YTH18542 YTA18542 YTH1542XP 42" Deck Riding Lawn Mower Tractor 532138971, 5 Point Star, 2 Pack Blue

What It Is

A set of two blue, toothed (5-point star) mulching blades designed to replace OEM part 532138971. They fit 42-inch cutting decks on select Craftsman LT1000/LT2000/T110/YT3000 and Husqvarna YTH22V42/YTH18542/YTA18542/YTH1542XP riding mowers.

Fitment & Compatibility

Before buying, verify three things:

• Deck size: Must be exactly 42 inches (measured blade tip to tip). These will not fit 46” or 54” decks.
• Model number: Confirm your mower model number (e.g., LT1000, YTH22V42) on the manufacturer’s tag under the seat or on the frame. Craftsman and Husqvarna models with 42” decks using OEM 532138971 are compatible.
• Measurements: Blade length is 21-1/8”, center hole 1” diameter, with a 2” blade offset. Check your current blade against these specs.

Key Things to Know

• Mulching vs. bagging: Toothed blades create finer clippings for mulching; they’re less effective for bagging or side-discharge. Use standard lift blades for those tasks.
• Installation: Straightforward with a socket wrench and torque wrench (set to 70-90 ft-lbs). Ensure blade tips face upward toward the deck, not downward.
• Balance: Aftermarket blades can be slightly out of balance. Spin-test before mounting; if it wobbles, return or rebalance with a file.
• Durability: Blue coating resists rust, but the toothed edge dulls faster than standard blades—plan to sharpen or replace mid-season.

Should You Buy It

If you own a Craftsman or Husqvarna 42” deck mower and prioritize fine mulching over bagging, this is a solid budget-friendly choice. Skip it if you need blades for standard cutting or side-discharge—look for high-lift or standard blades instead.