42" John Deere Mower Blade Set GY20683 (XHT Hi-Lift Replaces P/N UC22008 & M170639)

Buy 18 or More XHT/Predator Marbain Steel Blades to Save 15%
$29.95

This high-lift lawn mower blade set for 42-inch decks replaces John Deere part numbers GY20683, UC22008, and M170639.

Each blade is 21-1/4" long with a round center hole (51/64" diameter hole (Approx. 0.8 inch diameter)).  2 blades are needed for 42" cut.  Sold as a set.

This blade replaces the blade on some, but not all, John Deere 42" riding mowers.

Fits John Deere X350 42" Accel Deep Decks.

See the full list of OEM part numbers it replaces below to ensure it will fit your lawn mower properly. 

This is an XHT mower blade. That means it is made from Marbain Steel, the best steel a mower blade can made out of. You can expect it to last longer than your OEM blade or other inferior aftermarket blades. These blades are rated the Rockwell "C" hardness level. They wear 33% slower than traditional mower blades and are 40% less likely to bend or break. Perfect for sandy soil conditions, mowing rough terrain, or, best yet, manicuring a beautiful, well-maintained lawn.

Replaces OEM Part Numbers:

  • John Deere: UC22008
  • John Deere: M170639
  • John Deere: GY20683 (This is the part number for the set)

Known to fit these John Deere riding mower models among others:

  • John Deere X330 (42")
  • John Deere X350 (42")
  • John Deere X354 (42")
  • John Deere X370 (42")
  • John Deere Z335E ZTRAK (42") (Residential zero-turn)
  • John Deere Z335M ZTRAK (42") (Residential zero-turn) 
  • John Deere Z345M ZTRAK (42") (Residential zero-turn)
  • John Deere Z345R ZTRAK (42") (Residential zero-turn)

Dimensions:

  • Length: 21-3/8"
  • Width: 3"
  • Center Hole: 51/64" (Approx. 0.80 inches)
  • Thickness: 0.156"
  • Blade styl/lift: High-Lift

Need assistance? Please reference SKU 2PK-B1JD5019.

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