BCQNXX 48" Deck Replacement High‑Lift Blades 3-Pack — 17" Heat‑Treated Fit for John Deere GX/X Series

These BCQNXX high-lift replacement blades are a 3-pack of heat-treated 48" deck lawn mower blades made to replace John Deere M145476-series parts and restore cutting performance.

When your mower starts tearing grass instead of slicing it cleanly, swapping in a set of properly sized, balanced blades is the quickest way to reclaim a smooth, even cut. These 17" high-lift blades are engineered to match John Deere mounting and lift characteristics so they work with many popular GX, X, LT and LX series decks. Each blade is made from heat-treated steel for long wear and consistent edge retention under regular mowing conditions.

Which mowers and part numbers do these blades fit?

These blades are designed as direct-fit replacements for a wide range of John Deere models and commonly used OEM part numbers. They match the center hole size and mounting orientation used by the listed tractors and are compatible with several aftermarket cross-reference numbers.

• Replaces John Deere: M145476, M127673, M127500, M141794, M148663, AM146715, AM141907, UC22009
• Aftermarket cross-references: Stens 330-369, Windsor 50-4442
• Fits decks on GX255, GX325, GX335, X300/X304/X320 series and many LT, LX, X5/X7 models

How do these high-lift blades affect cutting performance?

High-lift blades create strong airflow under the deck so grass lifts before the blade severs it, improving discharge and bagging. That lift helps ensure clippings are cut more uniformly and reduces mulching clumps when conditions are favorable.

• High-lift edge geometry enhances grass lift for cleaner cuts
• Improved material evacuation reduces clogging on wet or tall lawns
• Consistent blade profile maintains even cut height across the deck

What are the blade dimensions and material details?

Knowing exact dimensions ensures you choose the right replacement without trial and error. These blades are manufactured to match the common 17" length and 13/16" center hole used on many John Deere decks, and the thickness and steel treatment increase durability.

• Length: 17 inches; Width: 2-1/2 inches; Thickness: 0.197 inches
• Center hole diameter: 13/16 inches to fit standard spindles
• Made from heat-treated steel for improved strength and edge life

How should I install and maintain these replacement blades?

Installation follows standard mower blade replacement steps: disconnect spark, raise mower, remove old blades, and torque new blades to manufacturer specs. Regular sharpening and inspection will maximize lifespan and keep cutting consistent.

• Always disconnect spark plug and stabilize mower before working
• Tighten blades to the tractor manufacturer’s recommended torque
• Sharpen periodically and check for bends, cracks or wear

Who is this for? Homeowners, landscapers and maintenance professionals who operate John Deere-compatible residential and light commercial tractors and need reliable, OEM-style replacement blades will find this BCQNXX 3-pack convenient. It’s ideal for those who want high-lift performance for better bagging or discharge, plus durable construction to reduce the frequency of blade changes. If you own one of the listed machine models or need cross-reference replacements for M145476-series parts, these blades provide a straightforward upgrade that restores cutting quality without fitting compromises.