AYP Genuine Part Push Mower Blade HU23021 21" 917532176135 Walk Behind Mowers the engine’s digital brain automatically

the engine’s digital brain automatically recalculates the air-fuel mixture to account for changes in air density

this unit is 100% brand new

achieving a top rotor speed of 225 RPM specifically for efficient high-speed burnishing

Full lubrication with spin-on oil filter cleans oil and protects engine components to ensure maximum lubrication and long life

AYP Genuine Part Push Mower Blade HU23021 21" 917532176135 Walk Behind Mowers the engine’s digital brain automaticallyAYP Genuine Part Push Mower Blade 21" 917532176135 21" AYP Lawn Mower Blade 21" Center Hole 5 8" Outer Hole 3 8" Center to Center 1 7 8" Width 2 1 4" Used on 55R21HV, 55B21HV, 55C21HV, 7021CM, 7021CM1, 5521CHV, 5521RS