L111 Mulching Blades for John Deere 42 in Deck (2 Pack) - Durable Fit

In this review the L111 Mulching Blades are judged on fit, construction, and real-world performance for owners of John Deere 42 in decks. These two replacement mulching blades are aimed at homeowners who need a direct, cost-effective swap for John Deere GX20249 and related part numbers, and the single biggest reason to buy is accurate compatibility with 11/16 in circular spindles combined with tested durability that stands up to routine mowing.

Key Features

• Direct Fit: Replaces John Deere GX20249, GX20433 and GY20567, so buyers get an exact fit for many L100 through L118 series tractors with 42 in decks.
• Correct Center Hole: The 11/16 in circle center hole avoids spindle mismatch when users confirm their deck uses that pattern.
• Durable Construction: 5/32 in thickness and validated with Rockwell Hardness and chip tests to resist wear and maintain edge life.
• Mulching Design: The 1 in lift and blade profile are intended to re-cut clippings for a finer mulch rather than simply discharging.
• Anti-Rust Paint: Cutting edges are painted to protect hands and prevent early corrosion during storage and installation.

Who It's For

This product suits John Deere owners with a 42 in deck who need a like-for-like replacement for GX20249 family parts, especially L111 and compatible L100-L118 series tractors, plus some Sabre and Scott's models. It is for users who prefer mulching capability and want blades that meet specific center hole and dimension requirements.

Homeowners with decks that use a 7-point star center or non-11/16 in spindle should look elsewhere, because these blades are only compatible with a circle 11/16 in spindle and will not fit those models. Users uncertain about center hole pattern must verify before purchase to avoid installation issues.

Pros & Cons

Pros

• Good build quality and balance from factory tests, giving reliable cutting performance and reduced vibration.
• Easy installation and accurate fit for the listed John Deere models, saving time on replacement.
• Solid value for money compared with OEM when compatibility is confirmed.

Cons

• Some users report disagreement about initial sharpness; blades may contact each other on certain decks if spacing varies.

Specifications

Length	21-7/16 in (544 mm)
Width	2-1/2 in (64 mm)
Thickness	5/32 in (4 mm)
Center Hole Shape	Circle (11/16 in)
Deck Size	42 in
Lift	1 in (25 mm)
Blade Type	Mulching Blade

Our Verdict

The L111 Mulching Blades are a pragmatic replacement for owners of John Deere 42 in decks who can confirm an 11/16 in circular spindle, offering durable construction and mulching performance at a reasonable price. They deliver dependable fit and tested durability, making them a sensible value buy for routine lawn care when compatibility checks are observed.

Frequently Asked Questions

Will these blades fit a 42 in John Deere deck?
Yes, these blades are sized for 42 in decks and replace GX20249-style parts, provided your spindle uses an 11/16 in circular center hole.

Are these blades the same as the OEM John Deere parts?
They are direct replacements for the listed John Deere part numbers and match the key dimensions and center hole, though they are offered as a compatible replacement rather than OEM branded blades.

Do the blades come sharp and ready to mow?
The blades are prepared with painted cutting edges for protection; sharpness reports vary so some users touch up the edge or check blade spacing to avoid blades striking each other.