QWD 42-Inch Gator Mulching Mower Blades 2-Pack for John Deere 7-Point Star Center, 21-3/8" Length

QWD GY20850 is a two-pack of gator-style mulching blades designed to replace worn John Deere 42" deck blades that use a 7-point star center hole.

These replacement blades are engineered to fit many John Deere 42-inch decks and to restore cutting performance without the premium cost of OEM parts. Each blade is toothed for mulching—cutting and recutting clippings into smaller pieces to help them break down more quickly and disperse more evenly across the lawn. They match several common OEM numbers, but proper fit depends on matching your blade length and center-hole pattern before purchase.

How do these QWD blades compare to the original John Deere parts?

The QWD GY20850 blades are manufactured to replace several original equipment part numbers used on 42" John Deere decks. They replicate the 7-point star center hole and the roughly 21-3/8" blade length that many of these mowers require, offering a practical aftermarket option when OEM blades are worn or unavailable.

• Replaces OEM numbers including GX22151, AM141033, AM141031, AM141034, AM137328, AM137333.
• Designed to the same center-hole pattern (7-point star) used on many John Deere 42" decks.
• Approximately 21-3/8" long—compare your existing blade to confirm compatibility.

What mowing benefits does the gator mulching design provide?

The gator-style teeth increase the blade's ability to lift and recut grass clippings so they are finer and distribute more evenly. That means better mulching performance on regular mowing cycles and less visible clumping behind the mower when conditions are suitable.

• Toothed profile slices and recuts clippings for finer mulch particles.
• Improved grass circulation under the deck supports more even drying and decomposition.
• Helps reduce visible clumping compared to straight-edged discharge blades when mulching is used correctly.

Will these blades fit my mower model and mounting pattern?

These blades fit many John Deere models with a 42" deck that use a 7-point star center hole, such as D100, D105, D110, D125, D130, S100, E100, E130, and LA115 families. Because John Deere uses several blade patterns across model years, always verify your original blade's part number, overall length, and center-hole shape to ensure a correct match.

• Compatible with many 42" deck applications—check your model list and part numbers.
• Confirm the 7-point star center hole; some decks use different patterns.
• Measure old blade length and compare before ordering to avoid fitment issues.

How should I install and maintain these replacement blades?

Installation follows the mower manufacturer's torque and safety instructions: disconnect the spark plug, secure the deck, and fit the blade with the correct orientation to preserve cutting geometry. Regular inspection, sharpening when needed, and replacing both blades as a matched set help maintain balanced cutting and reduce vibration.

• Always disconnect the spark plug and follow safety steps before working under the deck.
• Tighten to your mower’s specified torque and check for secure mounting on the 7-point star fitting.
• Inspect for damage and sharpen or replace blades in matched pairs to maintain balance.

Who is this for: The QWD GY20850 2-pack is aimed at homeowners and small property owners who operate John Deere lawn tractors with 42" decks and a 7-point star center hole. It’s a cost-effective aftermarket solution for users who want restored mulching performance, finer clippings, and reliable cutting without sourcing discontinued or hard-to-find OEM blades. Verify fitment details before ordering to ensure compatibility with your specific mower model and deck configuration.