So you've got a Harbor Freight Predator 3-inch 301cc trash pump and you need a new drain plug.

This is the one.

It's a direct OEM replacement—same as part number 686876 for the SKU#56718 pump.

You get two plugs in the pack, and each one comes with its own O-ring, so you're covered for a while.

Thread size is 31/32 inch ID, 1-5/16 inch OD (24.50mm ID, 33mm OD), and it's a fine thread—so make sure that matches what you need.

The plug itself is made from quality materials that hold up to water, debris, and the general abuse a trash pump goes through.

No leaks, no rust issues.

Installing it is simple—just thread it in and tighten.

The O-ring ensures a good seal so you don't lose your oil or water.

If you're not sure it fits, check the specs or message the seller before buying, because not every pump uses the same thread pitch.

Bottom line: if you need a replacement drain plug for your Predator pump, this 2-pack is a solid buy.