Part# 91-078
20-7/8" Oregon Medium Lift Heavy Duty Blade used on 60" John Deere models: 667 QuikTrak, 737, 757, 777, 797, 997, M665, Z520A, Z820A, Z830A, Z840A, Z850A, Z915B, Z915E, Z920Z, Z920M, Z925A, Z925M, Z930A, Z930M. Z930R, Z945M. Z950A, Z950M, Z950R, Z955M, Z960A, Z960M, Z960R, Z970R, Z994R, Z997, and Z997R. This Oregon OEM replacement lawn mower blade is made to the exact OEM specification for optimum performance.

• Replaces John Deere OEM# M128485, M131958, M168223
• Blade Width: 2.50"
• Blade Thickness: .312"
• Center hole: 7/8"
• Offset: 7/16"
  
• Requires (3) per 60"
• XHT Blade use part# B1JD1040

Part# 396-730
20-7/8" Oregon Gator G6 Heavy Duty Mulching Blade used on 60" John Deere Quik Trak & ZTrak models: 667,737, 757, 777, 797, 997, M665, Z520A, Z820A, Z830A, Z840A, Z850A, Z915B, Z915E, Z920Z, Z920M, Z925A, Z925M, Z930A, Z930M. Z930R, Z945M. Z950A, Z950M, Z950R, Z955M, Z960A, Z960M, Z960R, Z970R, Z994R, Z997, and Z997R. Tungsten carbide is fused into the blade, creating an ultra-hard layer at the cutting edge and increasing the time between sharpening. Cleaner, more efficient cutting performance can eliminate the need to bag, saving time, and reducing hassles. Up to twice the cutting length for increased cutting efficiency with each revolution.

• Replaces John Deere OEM# M128485, M131958, M168223, TCU15881, TCU18990
  
• Blade Width: 3.00"
• Blade Thickness: .250"
• Center hole: 7/8"
• Offset: 1/2"
• Air Lift: 1"
• Requires (3) per 60"
• Try the Predator Blade use #B1PD5041