QWD GY20852 Mower Blades 3 Pack for John Deere 48 Inch Deck, 7 Point Star High Lift Blades Replacement for AM137757 AM141035 GX21784 GX21785, Fits D140 D150 D160 LA130 LA140 LA145 E140

What It Is

The QWD GY20852 is a 3-pack of high-lift mower blades designed for John Deere 48-inch cutting decks. These blades are intended for residential lawn tractors and zero-turn mowers needing aggressive grass clipping discharge and bagging performance.

Fitment & Compatibility

Before buying, verify these three things:

• Deck size: Only fits John Deere 48-inch decks. Measure your deck width or check your mower’s model sticker.
• Blade pattern: 7-point star center hole. Confirm your spindle uses a star drive (common on John Deere tractors) not a round or keyed hole.
• OEM cross-reference: Replaces AM137757, AM141035, GX21784, GX21785. Fits models: D140, D150, D160, LA130, LA140, LA145, E140, and many others with a 48-inch deck. Check your mower’s model number against QWD’s list—older or non-Deere decks may not match.

Critical check: Measure your old blade length (should be 20.5 inches) and ensure the blade offset (lift height) matches your deck’s discharge chute clearance. High-lift blades need more clearance than standard blades.

Key Things to Know

• Installation difficulty: Easy for DIYers. Use a torque wrench to tighten to 70-90 ft-lbs (check your mower manual). A blade removal tool helps.
• Quality: Aftermarket, but rated 4.8/5 stars from 65 reviews. Expect sharp edges out of the box—handle with gloves.
• Common gotcha: High-lift blades increase airflow, which can throw clippings farther but also strain the engine slightly. Not ideal for mulching; they’re best for side-discharge or bagging.
• Wear life: Comparable to OEM. Replace when blade tips are dull or nicked, or after 25 hours of mowing.

Should You Buy It

Yes, if you need an affordable, well-rated replacement for a John Deere 48-inch deck and prioritize bagging or side-discharge performance. Skip if you mulch frequently (use low-lift or mulching blades instead) or if your deck has non-standard spindle hole patterns. For the price, this is a solid value for most residential mowers.