138971 Mower Blade for 42'' Deck, Compatible with C Raftsman LT2000 YT3000, H usqvarna YTH22V42 YTH18542 YTA18542 YTH1542XP, P oulan, A YP, Replace 134149, 138498, 532138971, 2-Pack

What It Is

This is a 2-pack of 42-inch deck replacement blades (model 138971) designed for residential riding mowers, specifically for cutting grass on medium-to-large lawns. It’s commonly used as a direct replacement for worn or damaged OEM blades on select Craftsman, Husqvarna, Poulan, and AYP models.

Fitment & Compatibility

• Deck size: Only fits 42-inch cutting decks. Measure your deck width before ordering—this blade won’t work on 46” or 54” decks.
• Compatible models: Craftsman LT2000, YT3000 series; Husqvarna YTH22V42, YTH18542, YTA18542, YTH1542XP; Poulan and AYP (American Yard Products) models with 42” decks. Check your mower’s model number against the manufacturer’s blade cross-reference.
• Replaces OEM part numbers: 134149, 138498, 532138971. If your current blade has one of these numbers, this is a direct swap.
• Measurements: Blade length is 21 inches (center hole to tip), center hole diameter is 7/8 inch, and thickness is 0.25 inch. Verify these with your old blade to ensure fit.
• OEM vs aftermarket: This is an aftermarket blade. It’s functionally identical but may have slightly different finish or packaging. No performance difference for most users.

Key Things to Know

• Installation difficulty: Easy—takes about 15 minutes per blade with a socket wrench and torque wrench (recommended torque: 50-60 ft-lbs). No special tools required.
• Quality: 4.4 stars from 81 reviews. Users report good balance and sharpness out of the box, but some note it dulls faster than premium OEM blades on rocky or sandy soil.
• Common gotcha: Ensure the blade’s center hole is 7/8 inch—some older Craftsman decks use a 1-inch hole. Measure before buying.
• Pack size: 2-pack is cost-effective for a full deck replacement. Single blades aren’t available in this listing.

Should You Buy It

Buy this if you own a compatible 42-inch deck Craftsman, Husqvarna, Poulan, or AYP riding mower and want a budget-friendly, reliable replacement for routine blade swaps. It’s not for heavy-duty mulching or commercial use—stick with OEM or high-end aftermarket if you need extra durability for tough terrain.