48'' Deck Mower High Lift Blades (GY20852 AM141035 AM137757 GX21784) Fits John Dee re D140 D160 E140 E150 E160 E170 LA140 LA145 LA155 155C Lawn Mower (3 PCS)

What It Is

This set of three 48-inch deck high lift blades is designed for John Deere lawn tractors, providing increased airflow to eject clippings farther and improve bagging or side-discharge performance.

Fitment & Compatibility

Before buying, confirm your mower deck is exactly 48 inches (measured blade tip to tip). These blades fit John Deere D140, D160, E140, E150, E160, E170, LA140, LA145, LA155, and 155C models. They cross-reference OEM part numbers GY20852, AM141035, AM137757, and GX21784. Measure your current blade length and center hole diameter (typically 7/8-inch or 1-inch) to verify match. Aftermarket replacements like these may vary slightly in thickness or balance compared to OEM; check that the blade ends clear the deck shell when spinning.

Key Things to Know

• Installation: Requires a socket wrench and torque to 40-50 ft-lbs. Use thread locker if bolts aren’t self-locking. Always disconnect the spark plug first.
• High lift vs. standard: High lift blades create more suction, improving bagging and discharge, but increase engine load and may wear faster on dusty or sandy lawns.
• Balance check: Aftermarket blades sometimes need balancing before installation. Use a blade balancer or hang on a nail to ensure even weight.
• Deck compatibility: These blades will not fit 42-inch or 54-inch decks. Verify deck model number under the seat or on the deck itself.

Should You Buy It

If you need a budget-friendly replacement for your 48-inch John Deere lawn tractor and prioritize strong bagging or discharge performance, these high lift blades are a solid choice. They’re not ideal for mulching (use standard or gator blades for that) or if your engine struggles with load. For the price, they offer good value for routine blade swaps.