although some vendors indicate these numbers are interchangeable

917371880 Lawn Mower

917254320 Tractor

318-550-000 (1988) Snowblower

14AS845H147 (1997) Lawn Tractor

92-151 Oregon Blade Replaces Gravely 450300 2025-10 Price Checked although some vendors indicate these92 151 Oregon Blade Replaces Gravely 450300 18" Mower Blade The Oregon 92 151 replacement lawn mower blade is made to the exact OEM specification for optimum performance. Our blades are individually straightened and hardened to provide a consistent, cleaner cut and increase blade longevity. Center hole: 5 8" Requires 2 blades for 36" cut Requires 3 blades for 52" cut High lift: The aggressive blade angle increases air flow to push debris up and out