Grasscool GX20249 Mulching Blade for John Deere L110 L111 L118 — 42" 11/16" Round Spindle, Tempered Balance

Grasscool GX20249 is a direct-fit 42-inch mulching replacement blade engineered to match John Deere L100–L118 series mowers with an 11/16" round spindle hole.

If your John Deere L110, L111 or L118 mower needs a dependable mulching blade, the Grasscool GX20249 offers a like-for-like replacement sized and tempered to restore cutting performance. This blade is manufactured to the same basic profile and mounting dimensions as OEM GX20249 (also listed as GX20433, GY20567 and some 490-110-00xx numbers), and it is designed for 42" decks on small tractors and residential zero-turns. Before ordering, confirm your spindle center hole is a round 11/16"—this blade is not compatible with 7-point star center hubs (AM141034) used on some D100 and D110 models.

How will this blade affect my mower's cutting and mulching?

The Grasscool mulching blade is shaped to lift, reshear and recirculate clippings so they break down and settle evenly into the lawn. Its geometry supports a finer cut than a standard high-lift blade, which helps return biomass to the turf rather than producing long clumps. The blade edges are painted for shipping and handling protection; the paint naturally wears off during regular use.

• Designed for mulching action on 42" decks for finer clippings
• Tempered and tested for hardness, balance and chip resistance
• Painted edges protect against rust and reduce installation nicks
• Dimensions tuned to match OEM GX20249 fit and lift

Will this blade fit my John Deere L111, L110 or L118 mower?

Yes, when your mower uses the 11/16" round center-spindle pattern and a 42" deck this blade is designed to fit models in the L100–L118 and related series (including some L17.542, L1742, 14.542GS, 1642HS and 17.542HS variants). It replaces several OEM numbers commonly shown for those machines. It is not compatible with models that use the 7-point star center mounting.

• Center hole: round 11/16" — confirm before purchase
• Replaces OEM GX20249, GX20433, GY20567 and some 490-110-00xx numbers
• Intended for 42" mower decks on small-tractor residential models
• Not suitable for AM141034 7-point star center hubs

What are the exact blade dimensions and build details?

The blade length, width and thickness are matched to common OEM specifications so clearances, lift and balance behave like the factory part. Grasscool subjects each blade to Rockwell hardness checks, V-bend resilience tests, chip resistance and balance verification to reduce vibration and extend service life. These QC steps are done before field trials to confirm practical compatibility and durability.

• Length: 21-7/16" (544 mm); Width: 2-1/2" (64 mm)
• Thickness: 5/32" (4 mm); Lift: 1" (25 mm)
• Center hole shape: round 11/16" for standard spindles
• Multiple mechanical tests: hardness, balance, chip and field tests

How should I install and maintain the Grasscool blade?

Installation follows the same steps as replacing any lawn-mower blade: disconnect spark, lift mower to safe working height, remove blade bolt and replace with Grasscool GX20249 oriented to match cutting direction. Keep blade bolts torqued to the manufacturer’s spec and check balance periodically. The painted cutting edges are cosmetic and protective; sharpening as needed will remove paint at the edge.

• Always disconnect spark and secure machine before working on the deck
• Install with cutting edge facing forward in rotation direction
• Tighten blade bolts to manufacturer torque; re-check after a few hours of use
• Sharpen periodically—paint on edges will wear away with use

Who this is for: Grasscool GX20249 is aimed at homeowners and service technicians who need a robust, OEM-style mulching blade for John Deere L100–L118 series mowers with 42" decks and an 11/16" round spindle hole. Choose this blade if you want a tested, tempered replacement that restores mulching performance and matches common OEM dimensions—do not buy it if your mower uses a star-pattern center mount.