M143520 Mower Blades 19" Fit for John Dee re 54" Deck Z445 Z425 Z435 LX280 X340 X380 X710 X730 X734, UC22010 Medium Lift Blade Compatible with John Dee re 54in Lawn Tractor, 3 Pack

What It Is

This is a set of three 19-inch medium-lift mower blades designed for 54-inch John Deere decks. They are an aftermarket replacement for OEM part UC22010, intended for cutting grass on residential lawns and light commercial properties.

Fitment & Compatibility

Before buying, confirm your deck is exactly 54 inches and uses three 19-inch blades. This set fits John Deere models: Z445, Z425, Z435 (zero-turn), LX280, X340, X380, X710, X730, X734 (lawn tractors). Measure your current blade length—must be 19 inches from tip to tip. Check the center hole size (standard 1-inch hex) and blade thickness (0.25 inches typical). Not compatible with 48-inch or 60-inch decks. Verify your deck’s spindle configuration matches medium-lift design (curved wing tips).

Key Things to Know

• Medium lift: Good for bagging and side discharge; less lift than high-lift for mulching.
• Installation: Use a blade removal tool or block the blade to prevent spinning. Torque bolts to 45-60 ft-lbs.
• Sharpness: Aftermarket blades may require light sharpening out of the box for best cut.
• Balance: Check blade balance after sharpening to avoid vibration and spindle wear.

Should You Buy It

If you own one of the listed John Deere models with a 54-inch deck and need a cost-effective replacement for OEM UC22010 blades, this three-pack offers good value for residential mowing. It’s not ideal for heavy commercial use or mulching (consider high-lift blades instead).