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Genuine Factory Parts 21 in. Mulching Mower Blade For Walk-Behind Mowers

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Chops clippings fine for mulching instead of bagging, with a direct-fit bowtie hole pattern for 21-inch walk-behind decks.
Genuine Factory Parts MPN 490-100-M084 In Stock & Ready to Ship
$26.99
Free shipping on orders over $75
Ships within 24 hours · most orders arrive in about 2 business days

About Product Overview

This 21-inch mulching blade is a direct-fit replacement for walk-behind mowers built from 1995 on, designed to chop clippings fine and drop them back into the lawn instead of bagging. It's a genuine factory part, not an aftermarket guess, so the fit and cut quality match what came on the mower originally. The bowtie/H hole pattern lines up with the spindle without modification, and it cross-references to a long list of OEM part numbers if you're matching an old blade.

  • Blade length: 21 inches
  • Blade type: Mulching
  • Fits deck size: 21 inches, walk-behind mowers (1995 and after)
  • Hole pattern: Bowtie/H
  • Made in USA

The Details Specifications

Brand Genuine Factory Parts
Model / MPN 490-100-M084
UPC 889021359690
Weight 2 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

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On Amazon, start with these four questions before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for Genuine Factory Parts. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

The big boxes don't care if your hardware store survives.

Amazon, Home Depot, and Lowe's are built to pull every hardware dollar out of your town. When the local shop can't keep the lights on, the counter where somebody actually knew which part you needed goes with it. We're built the other way: real brands so you're never stuck on a marketplace, and a straight answer to buy it down the street when that's the better call. Support independent hardware — it doesn't restock itself.

Why we tell you to shop local
Authorized dealer · Genuine Factory Parts

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