Description

When your water pump starts making that grinding noise or you notice it’s not moving water like it should, nine times out of ten it’s because the impeller key has sheared. This little part might not look like much, but it’s what connects your impeller to the drive shaft—and when it fails, your pump stops doing its job. Don’t let a broken key leave you high and dry when the cattle need water or you’re trying to fill spray tanks.

What You’re Getting

Precision-machined drive key that locks the impeller securely to the shaft
Made from hardened steel to handle the torque and vibration of pump operation
Exact fit for Ace centrifugal pumps—no grinding or filing needed
Designed to shear before expensive damage occurs to pump housing or motor

Built for Real Farm Work

This key fits Ace centrifugal pumps used across farms and ranches for water transfer, irrigation, and liquid handling applications. Whether you’re running a hydraulic-driven pump off your tractor’s remote or a belt-driven unit for filling stock tanks, this key keeps your impeller spinning true and your water flowing where it needs to go.

Made to Last

Farm pumps work hard, and this key is built to match that workload. The steel construction handles the constant start-stop cycles and varying loads that come with agricultural pumping. It’s engineered to be the weak link in the system—better to replace a two-dollar key than rebuild an entire pump.

Good to Know

Installation is straightforward once you’ve got the pump apart. The old key usually falls right out, and the new one slides in place. Keep a spare or two in your toolbox—keys can shear when hitting debris or if the pump runs dry. Check your pump manual for proper impeller positioning before reassembly.