HART 21-inch Replacement Blade for 40-Volt 21-inch Brushless Lawn Mower
HART 21-inch Replacement Blade for 40-Volt 21-inch Brushless Lawn Mower
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HART 21-inch Replacement Blade for 40-Volt 21-inch Brushless Lawn Mower

4.9 stars out of 58 reviews
(4.9)|
58 ratings

Key item features

  • Compatible Replacement: 21-inch blade designed specifically for the HART 40-Volt Brushless Mower.
  • Optimized Efficiency: Enhances cordless mower performance and extends battery life.
  • OEM Quality: Original Equipment Manufacturer part ensures compatibility and reliability.
  • Adaptive Speed: Replacement part for the 40V Brushless 21" Adaptive Speed Mower Kit (HLPM031).
  • Durable Design: Built to withstand normal wear and tear from rocks and debris.
  • Improved Cutting: Helps maintain mower efficiency and cutting performance over time.
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Current price is $21.97
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About this item

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HART 21-inch Replacement Blade for 40-Volt 21-inch Brushless Lawn Mower
HART 21-inch Replacement Blade for 40-Volt 21-inch Brushless Lawn Mower
current price $21.97
HART 21-inch Replacement Blade for 40-Volt 21-inch Brushless Lawn Mower
4.9 out of 5 Stars. 58 reviews
HART 16-Inch Replacement Blade for 20-Volt 16-Inch Push Mower
HART 16-Inch Replacement Blade for 20-Volt 16-Inch Push Mower
current price $18.97
HART 16-Inch Replacement Blade for 20-Volt 16-Inch Push Mower
4.4 out of 5 Stars. 49 reviews
Greenworks Replacement Lawn Mower Blade (21" Mowers : MO40L4413, MO40L03, MO48L4422)
Greenworks Replacement Lawn Mower Blade (21" Mowers : MO40L4413, MO40L03, MO48L4422)
current price $24.99
Greenworks Replacement Lawn Mower Blade (21" Mowers : MO40L4413, MO40L03, MO48L4422)
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Greenworks 21-inch Mulching Mower Blade 2905203
Greenworks 21-inch Mulching Mower Blade 2905203
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Comparison Chart:
CompatibilityHARTHART 21-inch Replacement Blade for 40-Volt 21-inch Brushless Lawn Mower-HART 16-Inch Replacement Blade for 20-Volt 16-Inch Push MowerGreenworksGreenworks Replacement Lawn Mower Blade (21" Mowers : MO40L4413, MO40L03, MO48L4422)GreenworksGreenworks 21-inch Mulching Mower Blade 2905203
Lawn mower blade typeMulching BladesHART 21-inch Replacement Blade for 40-Volt 21-inch Brushless Lawn MowerMulching BladesHART 16-Inch Replacement Blade for 20-Volt 16-Inch Push MowerMulching BladesGreenworks Replacement Lawn Mower Blade (21" Mowers : MO40L4413, MO40L03, MO48L4422)Bag BladesGreenworks 21-inch Mulching Mower Blade 2905203
Cutting width21 InchesHART 21-inch Replacement Blade for 40-Volt 21-inch Brushless Lawn Mower16"HART 16-Inch Replacement Blade for 20-Volt 16-Inch Push Mower21 inGreenworks Replacement Lawn Mower Blade (21" Mowers : MO40L4413, MO40L03, MO48L4422)21 inGreenworks 21-inch Mulching Mower Blade 2905203
Rec. useLawn MowersHART 21-inch Replacement Blade for 40-Volt 21-inch Brushless Lawn MowerWalk-Behind MowersHART 16-Inch Replacement Blade for 20-Volt 16-Inch Push MowerLawn MowersGreenworks Replacement Lawn Mower Blade (21" Mowers : MO40L4413, MO40L03, MO48L4422)Walk-Behind MowersGreenworks 21-inch Mulching Mower Blade 2905203
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Customer ratings & reviews

4.9 out of 5 stars
stars58 ratings41 reviews
How item rating is calculated
  1. 5 stars95% (55)
  2. 4 stars0% (0)
  3. 3 stars3% (2)
  4. 2 stars0% (0)
  5. 1 star2% (1)

Reviews summary

Pros
  • : Made with durable and sharp components.
  • : Offers affordable options.
Neutral
  • : Can be sharp and effective, but also prone to quality inconsistencies.
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Showing 1-3 of 41 reviews

May 11, 2025
hippy
Top Reviewer
5 out of 5 stars review

Verified Purchase

Exact Replacement

Exactly the same as original equipment. The picture looked exactly like the original blade on the mower. Not like the old days in which the mower came with an owner's manual with part numbers for nearly every part. The picture was helpful, and I was lucky, when I received it,it looks and feels exactly like the original. Along with annual sharpening,we should be set for about six years.

Incentivized Review
Helpful?7I8SBW7LTOVB792493368
Aug 21, 2025
Tracerround
Top Reviewer
5 out of 5 stars review

Verified Purchase

easy swap!

This blade fit the 21" supercharged self propelled Hart mower. Took a bit of research to figure out which of the 2 available Hart replacement blades was the one. Very easy to change for a 63 yr. old female.

Helpful?7I8SBW7LTOVB792493368
Nov 24, 2024
Jonathan
5 out of 5 stars review

Verified Purchase

Double check compatabilty!

Difficult to work out which blades are the replacements for these lawn mowers because they seem to be difficult depending on your lawn mower model number despite being the same length. So definitely triple check your model is compatible before ordering and dont just look at the inches of your lawn mower. Otherwise fantastic blade and great lawn mower all round.

Incentivized Review
Helpful?7I8SBW7LTOVB792493368