42 Inch Deck Mower High Lift Blades Fit for John Deere 100 102 D105 D110 LT160 LA135 Z225 X300 X304 LA120 SST15 Lawn Mower Replace OEM AM141034, AM141032 M154062 AM137327 M154061 2 Pack

What It Is

This is a set of two 42-inch high-lift mower blades designed for John Deere lawn tractors and zero-turn mowers with 42-inch decks. The high-lift profile increases airflow under the deck for improved grass clipping discharge and better bagging performance, making them ideal for mulching or collecting leaves.

Fitment & Compatibility

Before buying, confirm your mower has a 42-inch cutting deck and that the blade dimensions match: 21-inch length, 2.25-inch width, 0.25-inch thickness, with a 5-point star center hole (0.625-inch diameter). These blades fit John Deere models including 100, 102, D105, D110, LT160, LA135, Z225, X300, X304, LA120, and SST15. They replace OEM part numbers AM141034, AM141032, M154062, AM137327, and M154061. Double-check your deck model number (usually stamped on the deck or frame)—some 42-inch decks use a different spindle or mounting pattern. Also verify the blade orientation: high-lift blades have a curved trailing edge that must face upward.

Key Things to Buy

• Quality: Made from heat-treated carbon steel with a protective coating; reviews note good durability and balance compared to OEM, but inspect for sharpness out of the box—some may need light filing.
• Installation: Moderate difficulty. You’ll need a socket wrench, torque wrench (recommended 70-90 ft-lbs), and a block of wood to jam the blade. Always disconnect the spark plug and battery before working.
• Common Gotchas: High-lift blades create more drag, which can strain small engines on thick, wet grass—avoid mowing in damp conditions. Also, they may not fit older 42-inch decks with a different spindle bolt pattern (e.g., 7/16-inch vs. 5/8-inch center hole).
• Performance: Expect better bagging and discharge than standard blades, but slightly reduced lift in heavy grass; sharpen every 25 hours of use for consistent results.

Should You Buy It

If you own a compatible John Deere 42-inch deck and prioritize bagging or leaf collection over mulching, this is a solid upgrade at a reasonable price. It’s less expensive than OEM replacements and performs similarly for most residential lawns. Skip it if your mower has a 38-inch or 48-inch deck, or if you mainly mulch in dry conditions—standard blades are less demanding on engine power.