Agri-Fab 24924 Plug Aerator Knife

What It Is

The Agri-Fab 24924 Plug Aerator Knife is a replacement tine for tow-behind plug aerators, designed for use with Agri-Fab and compatible lawn aerators to pull soil cores and relieve compaction.

Fitment & Compatibility

Before buying, verify your aerator model. This knife fits Agri-Fab aerators (models 45-0299, 45-0298, and similar) and some universal units with a 1/2-inch hole mounting pattern. Measure your existing knife: the Agri-Fab 24924 is 5 inches long and 1 inch wide, with a sharpened, curved tip. It is an OEM replacement part, not a universal aftermarket fit—do not assume it works on other brands like Yard Tuff or Brinly without checking hole spacing and thickness. For non-Agri-Fab units, confirm the bolt diameter (usually 1/2 inch) and that the knife’s offset matches your core depth.

Key Things to Buy

• Quality: Made from hardened steel with a durable coating; holds up well in rocky or clay soil, but may dull faster in sand.
• Installation: Easy—remove the bolt, swap the knife, and retighten. No special tools required, but use anti-seize on bolts to prevent rust seizure.
• Common Gotcha: The knife has a left/right orientation; install with the curved edge facing the direction of travel. Reversing it causes poor core pull and excessive wear.
• Quantity: Sold individually—you’ll need multiple knives (typically 4–8 per aerator). Check your machine’s total tine count before ordering.

Should You Buy It

If you own an Agri-Fab tow-behind aerator and need a direct, drop-in replacement that matches OEM specs, this knife is the right choice. It’s affordable, durable for typical home use, and easy to install. Skip it if you need a universal or aftermarket option for a different brand—measure first to avoid a return.