Behind the Design: The Story of ImpelPro and Its Inventor
- Aug 30, 2025
- 5 min read
If you have ever dreaded a water pump impeller replacement, you are in good company.
For years, lifelong boater and tugboat mechanic Eddie Protzeller fought with "universal" impeller pullers that slipped, bent, or simply did not fit where they needed to. Those long hours wedged in engine rooms led to a simple question:
"Why isn't there a tool that actually works for real inboard engine spaces?"
ImpelPro was born from that question. It is a compact, bearing-driven impeller puller designed by a boater who was tired of tools that failed when it mattered most. This is the story of how frustration, persistence, and hundreds of hours of trial and error turned into the ImpelPro® impeller puller.
How One Stubborn Impeller Sparked an Invention
The Problem with Existing Impeller Removal Tools
Eddie's journey started with a familiar headache: a stubborn rubber impeller buried deep in an inboard water pump. He had already invested in several "premium" impeller removal tools. On paper they looked great. In practice, they slipped off the impeller, would not fit because of big, clunky knobs, and needed two hands and circus-level flexibility to operate in cramped compartments.
"Imagine sitting crisscrossed with your head under the exhaust, wrestling with tools that simply don't work," Eddie recalls.
After one particularly miserable water pump impeller replacement, he decided there had to be a better way. He did not just want a new tool. He wanted a solution that made impeller removal predictable instead of painful.
From Tugboats to Weekend Boaters
Eddie's background is all boats, all the time. Years running and maintaining tugboats. Keeping yachts and workboats running. Helping friends and family troubleshoot their inboard water pump and generator impeller issues.
Those hours in tight engine rooms taught him two things. Access is everything: if a tool does not fit between the hoses, mounts, and bulkheads, it is useless. And boaters want control: even if you use a mechanic, you do not want to be stranded or helpless over a simple impeller change.
With ImpelPro, Eddie set out to bridge that gap, putting commercial-grade performance into a compact tool that a DIY weekender or a pro mechanic could both rely on.
Designing a Better Tool
What Eddie Wanted It to Do
From day one, Eddie had a clear checklist. The tool had to:
Bite into the impeller, not just push against it
Work in tight inboard compartments where you can barely see the pump
Wind the impeller out smoothly instead of yanking and praying
Use a simple 9/16" wrench, a tool every boater or mechanic already owns
"The goal was to make a tool that doesn't just add pressure, but actually bites into the impeller and pulls it out in a controlled, effortless way," Eddie explains.
More Than 10 Iterations and Hundreds of Hours in the Shop
Getting there was not quick, and it was not pretty. Eddie spent hundreds of hours prototyping, testing, and revising. The final design came after more than 10 iterations and a very real box of broken, bent, and "almost right" parts.
To get it done, he taught himself how to run a lathe, experimented with different tooth profiles to grip the rubber without shredding it, refined the bearing system so the bearing does the heavy lifting instead of your shoulders, and tightened clearances until the tool could live comfortably in cramped pump locations.
"I have a box of broken or unusable pieces that didn't quite work," Eddie says. "But every failure brought me closer to the final design."
That bearing-driven design, with piercing teeth that lock into the impeller and a compact body built to fit around hoses and bulkheads, is what sets ImpelPro apart. For the full feature-by-feature breakdown, see What Makes ImpelPro Different from Other Impeller Removal Tools.
Want to see it work? Watch ImpelPro wind a stubborn impeller out step-by-step
Meet the Man Behind the Tool: Eddie Protzeller
A Lifelong Boater with a Problem-Solver Mindset
From family boating trips to years working on tugboats, Eddie has always been closest to the water when something needed fixing. Over time, he became the person people called when their inboard cooling system ran hot, their impeller shredded itself, or their generator impeller seized after sitting too long.
That mix of experience shaped his philosophy: "Boating should feel like freedom, not like you're one bad impeller away from losing your weekend."
Inventor, Mechanic, and Family Man
ImpelPro did not appear out of thin air. It came from late-night sessions in the shop after full workdays and family time. As a father of three, Eddie balanced day jobs and boat work, family commitments, and long evenings tweaking prototypes and testing new ideas.
His mission is simple: create tools that make boating maintenance easier, safer, and more accessible, whether you are a pro mechanic or a first-time boat owner.
Built for Boaters Who Want to Do It Themselves
ImpelPro is made from 316L stainless steel and aluminum alloy, built to live in a harsh marine environment and perform pull after pull. It fits flexible-vane rubber impellers on inboard engines and generators, in two sizes that cover most setups, and it is backed by a 7-Year Limited Warranty.
If you want the practical details, the rest of the site has you covered:
Choosing a size and seeing specs: Explore ImpelPro impeller pullers
Step-by-step removal in tight spaces: How to Remove an Impeller in a Tight Engine Room
How the cooling system works and why impellers matter: How a Boat Raw Water Cooling System Works
Common questions: ImpelPro FAQ
A Couple of Questions People Ask About the Story
Why did Eddie create ImpelPro in the first place?
Eddie spent years fighting impeller pullers that did not fit in real inboard spaces or simply did not work. ImpelPro is the result of hundreds of hours of redesigning, testing, and refining a tool that could actually bite into the impeller, fit into tight spaces, and wind the impeller out smoothly.
Do I still need a mechanic if I own an ImpelPro puller?
Many boaters use ImpelPro to handle their own water pump impeller replacement, while others hand the tool to their mechanic so the job goes faster and cleaner. If you are not comfortable working on your engine, a qualified marine technician can still use ImpelPro to make the job easier and more efficient.
Ready to End the Impeller Struggle?
You did not buy a boat to sit at the dock. A failed impeller should not be the reason you head back early, or never leave at all. ImpelPro was built by a boater who got tired of the alternative, to take the dread out of impeller removal and give you the confidence to handle it yourself when it matters.
About the Author
Eddie Protzeller is a Seattle tugboat and yacht mechanic, and the inventor of the ImpelPro® Impeller Puller. With 15 years servicing inboard engines and generators, he designed ImpelPro after fighting a badly stuck impeller in a tight engine compartment. He specializes in boat cooling systems and impeller maintenance.
For more information about Eddie, please visit About Us. See the full lineup of ImpelPro impeller pullers at impelpro.com
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