About Us

Hydraulic Parts Source is a premier supplier of remanufactured hydraulic pumps, motors, and valves.

Doug Filzek

Doug Filzek

President

Doug has owned Hydraulic Parts Source and acted as President for the past 20 years. He is the driving force behind the HPS mission of speed and customer satisfaction. He keeps a constant focus on improving the business to be more efficient and finding the best staff available to serve customer needs. He motivates the team to maintain a high level of integrity in all that they do, to always do right by customers, and to be the best company in our market.

As a lifelong resident of Michigan, Doug attended Lawrence Technological University before starting a family and opening the business. He’s been happily married for 25 years and has 5 children. He enjoys golfing and spending time with family.

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Cory Gilbert

Cory Gilbert

General Manager

With a personal goal of taking care of the customer at all costs, General Manager Cory Gilbert has been a driving force behind the high level of customer satisfaction at Hydraulic Parts Source. He has been with our team for 8 years. Cory has a “whatever it takes” attitude and helps maintain a customer service team that is accountable, honest, efficient, and hard-working. One of the first things you’ll learn about Cory in his professional life is his belief that “customer relationships are everything.”

Cory is a graduate of Alma College with a degree in Finance and Marketing. Outside of work, he enjoys spending time with family and is a proud brother & uncle. He is a sports fan who also enjoys golfing in his free time.

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Dan Hirsch

Dan Hirsch

Sales and Marketing Manager

Dan brings 14 years experience in Manufacturing to his role at Hydraulic Parts Source. He joined the marketing & sales division of the HPS team in 2017. Born and raised in Detroit, Dan is a proud graduate of the University of Michigan. Although he currently resides in the Livonia area, he has spent time living elsewhere in the United States, including Texas, Kentucky, Mississippi and Georgia. He enjoys church, golf, and family; he is the youngest sibling of 4, and proud to share that he has been married 26 years – and his parents were married for 59 years!

You’ll find that Dan is driven to positively impact the lives of his fellow HPS employees and customers by honest, straightforward communication and a service-oriented attitude. His personal goal is to build the gold standard of professional field sales and inside sales teams in the hydraulics industry.

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Josh Middleton

Josh Middleton

Account Manager - Midwest

As our Midwest Territory Sales Rep, Josh’s goal is to know each customer and their needs better than anyone else in the business. Josh will serve the customer with honesty, efficiency, and professionalism at all times.

Raised in Livonia, Michigan, Josh is a graduate of Eastern Michigan University. He has two brothers he is very proud of; his older brother works as a youth pastor in Shelby Township, Michigan, and his younger brother is now attending his alma mater, Eastern Michigan. Josh enjoys the outdoors, and aims to be outdoors as often as he can, whether it’s at the golf course, riding his bike, relaxing on the beach, or spending time with his friends & family; in his words, “that time spent together is priceless”.

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Ryan Crocker

Ryan Crocker

Inside Sales

Ryan is a lifelong Michigan resident who has been a customer service and inside sales professional with Hydraulic Parts Source for over 6 years in our Mt. Clemens facility.

Our customers trust Ryan because of his thorough follow-up, and his genuine concern with their needs. He’s known to take every customer request very seriously and consistently delivers client results. We have an amazing team and Ryan’s strength is being our go-to-guy to “get things done”.

Ryan is a proud uncle, loves fantasy football, and is a big Detroit sports fan.

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Bryan Laubach

Bryan Laubach

Inside Sales

An employee of Hydraulic Parts for 8 years, Bryan has been in the industry for over 25 years and brings an immense knowledge of the field to his work on our sales team. Customers often compliment Bryan as trustworthy, knowledgeable, extremely detailed, and fast at getting answers to customers. We’re proud to be able to count on Bryan to handle any situation.

Prior to his work with Hydraulic Parts Source, Bryan was with Motion Industries for almost 20 years. He has been happily married for 25 years, and is a big Star Wars fan.

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Robert Cacciapalle

Robert Cacciapalle

Inside Sales

Robert has been a part of the Hydraulic Parts Source team for 7 years. Robert is a graduate of the University of Phoenix, and resides in Clinton Township with his wife and family. He enjoys working on cars, playing hockey, and spending time with friends & family.

Robert is skilled in different areas of expertise at HPS; he has been cross-trained in multiple departments which allows him to be on-demand help wherever the team needs it. He is part of the reason HPS has the ability to provide customers with quick responses & excellent service.

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Our Customers Say It Best.

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“Building strong relationships with key suppliers is essential to our business. We rely on Hydraulic Parts Source for fast delivery and quality products. Their customer service is second to none!”
-Scott S.

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“I’ve had a great experience with the Hydraulic Parts Source team! I love your confirmations & you add the tracking numbers. You guys are great, fast, easy to deal with & prompt in responding to requests.”
-Chad H.

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“We are thankful for the prompt service, quick turn-around time & fair pricing that we can always count on from HPS.”
-Shawn

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“The quality of service is high and has been maintained during our business relationship. My contact, Bryan, is skillful in his field. I appreciate the quality of his work and him taking the time to answer all my questions.”
-H. Peeters

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“We have been a client of HPS for over 20 years. During this period we’ve always found the product to be of the highest quality and in some cases better than the new product from the manufacturer. The staff are always pleasant and extremely helpful with an abundance of technical knowledge. I would recommend this company to any potential clients.”
-John Grange

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“Good costs, great service, great quality! Hydraulic Parts Source is a great company to deal with. We have dealt with HPS daily for the last 7 years. In that time, they’ve taken very good care of us. The quality of their parts and remanufactured units are a step above the rest. HPS knows customer service and I know they make every effort to meet our needs!”
-Bryan A.

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“I have been working with HPS for years now and can’t remember one time they failed to meet or exceed my needs. They have always gone the extra distance on quoting and getting product to me quickly. I have not been able to find any other supplier that does as good of a job as they do.”
-Michelle Rangel

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“I started using Hydraulic Parts Source in 2012 after making the switch from my previous supplier. HPS provides fast & efficient customer service as well as technical expertise. That combined with their large inventory on both parts as well as new units made it a no-brainer for me to use them as my main hydraulic supplier.”
-Daniel Gradzewicz