8TEN LawnRAZOR Mower Blade for John Deere M143520 — 3-Pack 54C Deck Medium-Lift, Hardened Steel

8TEN's LawnRAZOR M143520 is a heavy-duty, medium-lift replacement mower blade 3-pack engineered to match OEM performance for John Deere 54C decks.

If you need reliable cutting power that fits John Deere equipment, these 8TEN LawnRAZOR blades are designed to be a direct-fit, durable alternative to OEM M143520 replacements. Each blade is manufactured to the listed dimensions and hole pattern so you can swap them in quickly and get back to mowing with consistent lift and discharge characteristics. This product listing covers compatibility, physical specifications, and common buyer questions so you can confirm fit and performance before purchase.

Will these blades fit my John Deere mower?

Yes — the 8TEN LawnRAZOR M143520 blades are made to the same mounting and dimensional specifications as the OEM John Deere part numbers cited. They fit a wide range of models that use the 54C deck or the same blade interface.

• OEM equivalents: John Deere M143520, UC22010, UC40844.
• Compatible John Deere models: GX255, GX335, GX345, GX355, Z375, Z425, Z435, Z445, Z525, Z535, Z540 (with 54C deck).
• Also fits utility and compact tractors: 1023E, 1025R, 1026R, 2025R, 2210, 2305, 2320 when equipped with 54C decks.

What are the exact blade dimensions and mounting details?

These replacement blades are produced to match the critical measurements necessary for proper clearance, rotation, and lift. Confirm your deck uses a 54C blade and the center hole pattern before ordering.

• Overall length: 18 7/8 inches (measured tip-to-tip).
• Center mounting hole diameter: 3/4 inch for secure fitment.
• Blade thickness: 0.197 inches for strength and resistance to bending.
• Cutting edge width: 2 5/8 inches to deliver medium lift and discharge flow.

How do these 8TEN LawnRAZOR blades perform in everyday mowing?

They are designed to provide medium lift and consistent cut quality across a variety of grass types and conditions. Built from hardened steel and finished for corrosion resistance, they balance durability with the airflow needed for effective clipping dispersal or bagging when used as part of compatible systems.

• Medium-lift profile reduces scalping and helps even discharge across the deck.
• Heat-treated construction maintains edge retention longer under normal use.
• Precision hole and shoulder locations minimize vibration and improve balance.

What should I know about installation and maintenance?

Installation is straightforward if you have the correct socket or wrench for the spindle nut and a torque reference from your mower manual. Keep blades balanced and sharpened for best results; replace blades that show severe bends, cracks, or excessive wear.

• Follow your mower manual for correct torque on mounting hardware.
• Inspect blade balance after sharpening; rebalance if necessary.
• Replace in sets when one blade is damaged to maintain even deck performance.

Who is this for: The 8TEN LawnRAZOR M143520 3-pack is aimed at homeowners and small property managers who own John Deere lawn tractors or compact tractors with 54C decks and want an affordable, OEM-compatible blade replacement. It's also suitable for anyone maintaining multiple machines who prefers to replace blades in sets for balanced cutting. Choose this 3-pack when you want blades that match the original mounting geometry and deliver dependable medium-lift cutting power without the premium OEM price.