MaxPower 331806S Blade for 42" Cut John Deere, Sabre, Scott's Replaces OEM #GX20249 Black

What It Is

The MaxPower 331806S is a replacement lawn mower blade designed for 42-inch cutting decks on select John Deere, Sabre, and Scott’s models. It’s a direct aftermarket replacement for OEM part #GX20249, suited for residential mowing on standard turf.

Fitment & Compatibility

Before buying, check these three things:

• Deck size: Only fits 42-inch cut decks. Measure your deck’s cutting swath if unsure.
• Blade dimensions: 21.5 inches long, 2.5 inches wide, 0.25-inch thick, with a 1-inch center hole and 7-point star drive. Match these against your old blade.
• Model compatibility: Confirmed fit for John Deee LX172, LX173, LX176, LX178, LX186, LX188, Sabre 1642, 1842, 2142, and Scott’s 1642, 1842, 2142 series. Verify your mower’s model number on the frame or under the seat.
• OEM vs aftermarket: Replaces GX20249; identical specs but not genuine John Deere. No adapter or modification needed for listed models.

Key Things to Know

• Quality: MaxPower blades are heat-treated steel with a black powder coat for rust resistance. Edge retention is decent for residential use, but not as durable as premium OEM or high-carbon blades.
• Installation difficulty: Easy—requires a socket wrench and blade removal tool. Torque the center bolt to 40-50 ft-lbs. Always disconnect the spark plug first.
• Common gotcha: The star drive pattern must match your mower’s spindle. If your OEM blade had a different drive (e.g., round hole with keyway), this won’t fit. Check your old blade’s center hole shape.
• Balance: Pre-balanced out of the box, but always rebalance after sharpening to avoid vibration.

Should You Buy It

Buy this if you have a compatible 42-inch John Deere, Sabre, or Scott’s mower and want a budget-friendly, drop-in replacement for standard residential cutting. Skip it if you need heavy-duty mulching or commercial-grade durability—look for a thicker or mulching-specific blade instead.