Genuine Oregon Mower Blade, 21"""" rpls Grasshopper 320242 91-531

Oregon

MSRP: $20.20
$9.09
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SKU:
OEP~91-531
UPC:
032488915316
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Details

  • Requires 3 blades for 61" cut and 2 blades for 41" cut
  • High-lift: Aggressive blade angle increases air flow to push debris up and out for superior bagging or side discharge
  • Major brand replacement: Grasshopper
  • Replace OEM No. 320243, 320245, 320245B

Blades

Blade Width Measure near the center of the blade.2.50"
Blade Thickness Measure near the center of the blade.0.250"
Blade Length Measured diagonally from the corners of the blade21"
Center Hole Size Many blades will have a round hole in the center of the blade and you will need to know its diameter. Blade Length 5 or 7 Point Star Center holes may be 5 or 7 point star shaped. 5 point star on blade7 point star on blade Square or Rectangular The MTD built blades on many walk behind lawn mowers have a 'bow-tie' hole. In this case the Oregon replacement blade will have a rectangular center hole which will fit on the bow-tie pattern on the blade adapter. Square or Rectangular hole on blade MTD Blades The MTD® built blades (Bolens, Cub Cadet, Troy-bilt, White, Yard Machine, and Yardman) may have a 6 point star. Oregon replacement blades will have a 'Y' shaped center hole which will fit exactly on the 6 point star on the blade spindle. 6 point star for MTD blades The two sizes of the 6 point star. If your blade spindle has a bolt and lock washer that holds the blade to the machine you would use the 11/16" star or 'Y' blade. blade spindle with bolt and lock washer. If your blade is secured with a large flange nut then you would use the 5/8" star or 'Y' blade. blade spindle with large flange nut1/2"
OffSet (Sometimes referred to as offset): If you set the blade on a table this is the distance the center of the blade is above the table top (if any) when the cutting edges are flat on the table5/16"
Air Lift Air lift is the distance the lift panel rises above the cutting edge.1"

General

ColorBlack
Volume340.501 in3
Product UOMEach
Weight (with Packaging)3.432 Lb
Product Height0.25
Product Length21"
Product Width2.5
Packaged Length22.7"
Packaged Width6"
Packaged Height2.5"

Click these tabs for additional compatibility information.

Replaces

Bush Hog:

88668

Grasshopper:

320242, 320243, 320244, 320245, 320245B, 320246, 320247, 320322, 70134

J Thomas:

BO-6167

Mowmore:

GH13464, GH21HL, GH21HLA

Rotary:

13464

Stens:

320-018

Sunbelt:

B1GH1904

Woods:

70134, 70134KT, 70142KT, 72517KT

Compatible Models

Bush Hog:

ATH, ATH600, ATH720, FTH, FTH600, FTH720