2x 2105200317A Lawn Mower Blade For 21" Lawn Mower Deck MNA152505 MNA152701

Lawn Mower Blade for 21-inch Lawn Mower Deck

This lawn mower blade fits a 21-inch cutting deck and directly replaces OEM part numbers 2105200317A, MNA152505, and MNA152701.

Overview

The lawn mower blade is the cutting component that spins at high speed to shear grass cleanly and evenly. This 21-inch blade is engineered for walk-behind mowers and serves as a direct replacement for worn or damaged factory blades. It is built for homeowners and landscape professionals who need a dependable cut every time they mow.

Built For Performance

• Precision-milled cutting edge provides a clean scissor-like cut
• Hardened steel body resists impact damage from rocks and roots
• Aerodynamic sail design lifts grass for a uniform cut and better bagging
• Center hole and pin drilling match original 21-inch blade mounts
• Heat-treated alloy maintains edge sharpness longer between services
• Includes two blades for a complete set under a 21-inch deck

On-The-Job Use

• Weekly residential lawn maintenance and turf trimming
• Mulching or side-discharge setups with compatible 21-inch mowers
• Replacing a bent or dull factory blade after hitting hidden debris
• Keeping a sharp backup pair on hand for commercial mowing routes
• Seasonal spring blade swap to kick off heavy growth months

Specs At A Glance

Good To Know

Q: How do I confirm this blade fits my mower? A: Verify your mower uses a 21-inch deck and cross-check the OEM numbers 2105200317A, MNA152505, or MNA152701 stamped on your current blade.

Q: How often should I sharpen or replace the lawn mower blade? A: Sharpen after roughly every 25 hours of mowing or when grass tips tear instead of cutting cleanly; replace the blade as a pair if it is bent, cracked, or deeply worn.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.