Husqvarna Genuine OEM 42" Hi-Lift Blade for 2042 LS, LT 16542, YTH 1842, YTH 20K42, YTH 23V42 Lawn Tractors / 532138971, 532138498, 138971X431, 138971

What It Is

This is a Husqvarna Genuine OEM 42-inch hi-lift blade designed for increased airflow and superior grass discharge, ideal for bagging or side-discharge on select Husqvarna lawn tractors with a 42-inch cutting deck.

Fitment & Compatibility

• Deck size: Only fits 42-inch cutting decks. Measure your deck width before ordering.
• Model fit: Confirmed for Husqvarna 2042 LS, LT 16542, YTH 1842, YTH 20K42, and YTH 23V42. Check your model number on the tractor’s frame or under the seat.
• OEM vs aftermarket: This is genuine Husqvarna, not a universal blade. Use OEM part numbers 532138971, 532138498, 138971X431, or 138971 for direct cross-reference.
• Measurements: Blade length is 21 inches (center hole to tip). Center hole diameter is typically 5/8-inch. Verify your blade’s length and hole size if replacing an unknown blade.

Key Things to Know

• Hi-lift design: Creates more lift than standard blades. Excellent for bagging but may increase engine load and wear on belts if used on dry, sparse grass.
• Installation: Requires a socket wrench and torque wrench (recommended torque: 70-90 ft-lbs). Always lift the deck and disconnect the spark plug before swapping blades.
• Sharpening: Can be sharpened, but avoid over-grinding the hardened edge. Replace if bent, cracked, or heavily worn.
• Common gotcha: Hi-lift blades can leave clippings on the lawn if cutting wet grass or with a dull edge. Keep them sharp for best results.

Should You Buy It

If you own one of the listed Husqvarna models and prioritize clean bagging or side-discharge performance, this OEM blade is a reliable, direct-fit upgrade over standard blades. For occasional mulching or very dry conditions, consider a mulching blade instead.