OEP 598-631 Gator G5 Mulching Blade (21") - Image 1
Oregon

OEP 598-631 Gator G5 Mulching Blade (21")

Last verified by the Lifetime Picks Editorial Team

Why we picked it

Gator-tooth profile lifts clippings for repeated re-cutting (finer mulch)

Warranty: Limited 90-day warranty against manufacturing defectsMade in: USA

Oregon's Gator G5 mulching blade is the aftermarket lawn mower blade r/Lawncare, r/Landscaping, and r/HomeImprovement consistently recommend over the OEM blade that shipped with your mower. The Gator tooth profile (the namesake, the teeth on the back edge of the blade) lifts the grass clippings up into the deck for repeated re cutting before they exit, producing finer mulch that decomposes in days rather than weeks. The G5 is Oregon's heaviest gauge (5/16" thick), 21" length fits most walk behind mowers. The heat treated steel holds an edge through a season of weekly mowing; sharpening with a file or grinder restores it. Oregon has manufactured cutting components in Portland since 1949.

Limited 90-day warranty against manufacturing defects Made in USA
$33.49Latest on Amazon Buy from Oregon Cheapest on eBay

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Community & Review Summary

4.6/ 5

1,010 Amazon reviews

0%

r/BuyItForLife satisfaction

0

Total mentions (0 positive)

N/A

Amazon category rank

Price History

May 12, 2026: $33.49Jun 19, 2026: $33.49
Jun 25Jun 26

We began tracking this price on May 12, 2026. The chart fills in as more prices are recorded; see CamelCamelCamel below for older history.

View full price history on CamelCamelCamel

Pros & Cons from Reviews

Pros

  • +Gator-tooth profile lifts clippings for repeated re-cutting (finer mulch)
  • +5/16" thick heat-treated steel - heavier than OEM
  • +21" length fits most walk-behind mowers
  • +Sharpenable with file or grinder
  • +Made by Oregon in Portland since 1949
  • +Holds an edge through full mowing season

Cons

  • -Heavier blade reduces mower throw distance (mulch-mode tradeoff)
  • -Single blade - multi-blade mowers need pair / triple
  • -Verify your mower's spindle bore size before ordering
  • -Heat-treated edge dulls if you hit rocks or roots

Independent Video Reviews

Hands-on reviews from independent channels (not the manufacturer), covering what they like and what they do not.

Gator G5 Blades Install Part 2 - Testing them out by Grayson's Vacs and Mowers
Gator Mower Blade Comparison - BEST LAWN MOWER BLADES by Power Equipment Man

Warranty & Returns

Warranty

Limited 90-day warranty against manufacturing defects

Return Policy

Most items are returnable within 30 days of receipt for a full refund. Some categories have shorter return windows.

Read full return policy
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