OCPTY 42-inch Replacement Mower Blades for John Deere 42" Decks — Set of 2, 7-Point Star Fit, Iron 21.25"

OCPTY 42-inch deck mower blades are a two-blade replacement set engineered to fit John Deere 42" decks (OEM AM141034, AM137329) for clean, efficient cutting.

These replacement blades from OCPTY are designed for 42-inch cutting decks used on many John Deere lawn tractors and riding mowers. The pair of iron blades measure 21.25 inches each, with a 2.63-inch width, 0.177-inch thickness, and a 7-point star center hole to match common John Deere spindle fittings. They’re sold as a set of two to refresh a 42" deck’s cutting performance, restore lift and discharge, and reduce jagged, uneven cuts caused by worn or damaged blades.

Which John Deere models will these OCPTY blades fit?

These blades are compatible with a wide range of John Deere 42" deck tractors and lawn tractors. They match OEM numbers AM141034 and AM137329 and fit both series and model decks used across compact and residential riding mowers.

• Fits 42" decks on models like 102, 105, 115, 125, 135 and D100–D130 series.
• Compatible with LA and LT series such as LA100–LA135, LT160, LT180, and S240.
• Also suitable for X110, SST15, SST16 and other John Deere 42" decks.
• 7-point star center hole aligns with common John Deere spindle designs.

How do these blades improve mowing performance?

Fresh, properly shaped blades make cleaner cuts, which helps grass heal faster and creates a more even lawn appearance. The OCPTY blades are designed with sharp edges and lift characteristics that pull grass upward into the cutting path for improved discharge and clipping dispersion.

• Sharp iron cutting edges reduce tearing and fraying of grass blades.
• Blade geometry promotes efficient upward lift and side discharge.
• Restores deck balance and reduces vibration compared to worn blades.
• Two-blade set ensures both cutting surfaces on a 42" deck are refreshed.

What are the exact dimensions and installation details?

Each blade is precisely sized to match John Deere 42" deck specifications so you can replace blades without modification. The 7-point star center hole fits standard spindle bolts used on compatible John Deere decks; typical installation requires basic hand tools and blade torque to manufacturer specs.

• Blade length: 21.25 inches; deck coverage: 42 inches (pair).
• Width: 2.63 inches; thickness: 0.177 inches for durability.
• Center hole: 7-point star to match OEM spindle mounting pattern.
• Sold as a set of 2 iron blades; replace both for balanced performance.

How should I care for and maintain these blades?

Routine care keeps cutting performance consistent and extends blade life. After each mowing, clean clippings and moisture from the blades, inspect for nicks or bends, and sharpen as needed. Replace blades if they become bent, cracked, or excessively worn.

• Wipe off wet grass and debris after each use to reduce rusting.
• Sharpen edges periodically; maintain the original bevel angle for best results.
• Check mounting bolts and torque to mower manufacturer recommendations.
• Replace blades in matched pairs for a balanced 42" cutting deck.

Who this is for: Homeowners and landscapers with John Deere 42" decks who need a direct-fit blade replacement—especially those using models listed above or needing OEM-equivalent parts AM141034 / AM137329. Choose OCPTY if you want a straightforward, compatible two-blade set that restores lift and cutting quality without custom fitting or modification.