Jabsco Impeller Guide

Jabsco Replacement Impeller Guide: Keep Your Pump Running Smoothly

Jabsco flexible impellers are designed to fit a wide range of engine cooling, bilge, transfer, and general-purpose pumps. Whether you're maintaining a boat, an industrial pump, or a water transfer system, choosing the right Jabsco impeller ensures optimal performance and longevity.

Browse all impellers.

Why Impeller Maintenance Matters

Jabsco flexible impellers undergo rigorous quality checks to guarantee efficiency, reliability, and durability. Regular replacement is key to preventing unexpected breakdowns and ensuring your pump operates at peak performance.

• Use Neoprene Impellers for engine cooling and fresh or saltwater transfer applications. Neoprene is the most common material and is suitable for environments where only minor exposure to oil or diesel occurs.
• Use Nitrile Impellers for bilge pumping and contaminated water transfer, especially when dealing with oil or diesel-heavy fluids.

How Often Should You Replace Your Impeller?

While a well-maintained impeller may last for several years, it is recommended to replace it annually or sooner, depending on engine use. Preventative maintenance is always better than dealing with pump failure at the worst possible time.

Step-by-Step Guide to Replacing an Impeller

1. Remove the End Cover Screws – Access the impeller by carefully taking off the end cover.
2. Extract the Old Impeller – Use an impeller removal tool or channel lock pliers to grip the hub. Avoid using screwdrivers, as they can damage the pump face and create leaks.
3. Apply Grease to the New Impeller – This makes installation easier and protects the impeller during the initial prime.
4. Reinstall the Gasket & End Cover – Once everything is securely in place, your pump is ready to go.

Always Carry a Spare Impeller

The impeller is a critical component of your engine’s cooling system. Keeping a spare on board prevents emergencies and ensures you're never left stranded due to a failed pump.

How to Select the Right Jabsco Replacement Impeller

1. Identify the Impeller Profile Code Letter – Identify the impeller profile Code Letter (Silhouette) by comparing the impeller to the profiles below.

1. Measure the Depth & Shaft Diameter – Ensure the new impeller matches your pump’s specifications.

1. Determine the Drive Type – Verify the correct drive style for a seamless fit.