M143520 M145516 M152726 396-719 Mower Blades, Compatible with John De ere 54 inch Deck Ztrak Z375R Z525E Z535M GX255 GX335 GX345 X340 X380 X394 1023 1025R 1026R (3pack)

What It Is

This is a set of three aftermarket mower blades designed for 54-inch John Deere decks, commonly used on ZTrak zero-turn mowers, GX/X300/X500 series garden tractors, and select 1000R compact utility tractors. They directly replace OEM part numbers M143520, M145516, M152726, and 396-719 for mulching or standard cutting tasks.

Fitment & Compatibility

• Deck size is critical: These blades fit only 54-inch John Deere decks. Measure your deck width or confirm your model’s deck is 54” before ordering.
• Compatible models include: Z375R, Z525E, Z535M, GX255, GX335, GX345, X340, X380, X394, 1023E, 1025R, 1026R. Not all 54” decks use the same blade—double-check your OEM part number against M143520, M145516, M152726, or 396-719.
• Aftermarket fit: These are non-OEM. They match the hole pattern, center hole diameter (usually 15/16” or 1”), and overall length (approx. 20.5”). Measure your existing blade’s length and center hole to confirm.
• What to verify: Check blade thickness (typically 0.1875” or 0.25”) and that the lift/wing pattern matches your deck’s discharge type (mulching vs. side-discharge). Some users report slight balance differences vs. OEM.

Key Things to Know

• Quality vs. OEM: At $45.99 for a 3-pack, these are budget-friendly. Steel thickness and heat treatment may be less durable than genuine John Deere blades, especially on rocky or sandy lawns.
• Installation: Easy swap—remove one bolt per blade (usually 15/16” or 5/8” socket). Torque to 50-60 ft-lbs. Always lift the deck and disconnect the spark plug for safety.
• Common gotchas: Balance can vary—check with a blade balancer after install. If vibration occurs, replace individually or rebalance. These are not hardened for heavy commercial use; residential mowing is fine.
• Sharpness out of box: Typically come sharp but may need a quick hone for best cut. Replace every 25-50 hours or when grass tears instead of cuts.

Should You Buy It

Yes, if you have a 54-inch John Deere deck and need a low-cost 3-pack for seasonal replacement on a residential lawn. Not ideal for commercial operators or those with rocky terrain—OEM blades will last longer. For homeowners looking to save money without sacrificing basic cut quality, this is a solid value.