PREDATOR 2 REPL USA XHT Blades 38" Compatible with John Deere AM100945 AM100991 AM77979 M82408

What It Is

These are 38-inch, three-blade replacement mower blades from PREDATOR, designed for zero-turn and riding mowers, specifically engineered to fit John Deere models that use OEM part numbers AM100945, AM100991, AM77979, or M82408. They’re for medium to heavy-duty residential or commercial mowing.

Fitment & Compatibility

• Deck size: Only fits 38-inch cutting decks. Measure your deck width before buying.
• Model check: Verify your mower’s deck uses a three-blade system. Common John Deere models include Z335E, Z345R, Z355E, X350, X354, X370, X380, and X394, but confirm with your owner’s manual or current blade part number.
• OEM vs aftermarket: These are aftermarket blades, not John Deere OEM. They match the OEM dimensions (length, width, center hole, and offset) but may vary slightly in thickness or steel composition.
• Measurements: Each blade is approximately 12.5 inches long, 2.25 inches wide, with a 0.5-inch center hole. Check your existing blade’s length and hole size to confirm.
• Other brands: Not guaranteed to fit other brands like Husqvarna or Cub Cadet—stick to John Deere 38-inch decks.

Key Things to Know

• Quality: Made from heat-treated steel with a coated finish for rust resistance. Users report they stay sharp for 5–10 acres of mowing.
• Installation: Straightforward swap—use a torque wrench to tighten center bolts to 35–40 ft-lbs. No special tools needed beyond a socket and a blade removal tool (or a block of wood to lock the blade).
• Common gotcha: These blades may require balancing after install. Use a blade balancer to avoid vibration that can damage the spindle or deck.
• Warranty: PREDATOR offers a limited lifetime warranty against defects—hang onto the packaging or receipt.

Should You Buy It

If you need a budget-friendly, reliable replacement for your John Deere 38-inch deck and don’t mind checking balance after install, these are a solid buy. They’re not premium commercial-grade, but they perform well for residential mowing and occasional heavy use. Avoid if you must have OEM fitment or need blades for a non-John Deere deck.