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CLEAR FILTERS

SMALL TOWN ROOTS, BIG DREAMS

One-Stop Diesel Maintenance Since 2020

Doc’s Diesel launched in 2020 with a simple mission: Make Diesel Truck Maintenance Easy. When it was time to service our trucks, we were sick of the dealership charging us an arm & a leg for replacement filters and parts. Then, when we decided to do it ourselves; it was hard to find all the filters our truck needed in one place online - and if we did find the right parts we needed, they were usually out of stock, or we couldn't trust a cheap brand. That's when we decided to spec and design replacement diesel filters that meet or exceed OEM standards while cutting out the middleman.


It all started with a little inspiration from my Grandpa Doc...

How It All Started

Grandpa Doc was the one who changed the trajectory of our family with his entrepreneurial spirit. He paved the way for bigger ideas, bigger visions, and bigger execution. Grandpa Doc exemplified hard work and a love for his people. Early on, he owned farmland and then went into the dump truck business. From there, he went on to own a Ford Dealership, before ultimately getting into the auto parts business - where he really dug deep in the industry. Although he passed away when I was a kid, I am very thankful for the time we had together.Because of Grandpa Doc, I started this business with his spirit in mind and I wanted to bring some of his principles into the 21st century to continue his legacy. Thus, Doc’s Diesel was born to deliver the right parts, right now, right to your front door without having to leave the house or scour the internet for hours. It overwhelms me with joy to see all of the amazing 5-star reviews and happy customers that we have, knowing how proud this would have made Grandpa Doc.


– Founder, Max Nihart

Making DIY Car Maintenance Easy as 1-2-3!

Because of the incredible success we have had with Doc’s Diesel, we were inspired to launch a gas vehicle line of the  same level of high-quality replacement auto parts.. In October 2024, we officially launched our partner brand, Doc’s Filters, to cater to everyday drivers across the country. Doc’s Filters offers the same premium replacement filters and auto parts as Doc’s Diesel, carefully crafted for your gas vehicle to keep your car, SUV, or truck operating at its peak performance.

Doc's Diesel sets a new standard in replacement diesel filters, oils, and more, known for quality and reliability in the automotive diesel parts industry. Our premium collection of filters includes engine air filters, cabin air filters, fuel filters, oil filters, and a variety of oils and additives for Cummins, Powerstroke, Duramax, and EcoDiesel trucks. Our products are rigorously tested by SGS + IBR Laboratories (the world’s leading inspection, verification, certification, and testing company) and inspected to meet OEM Micron and efficiency ratings. Every filter in our lineup is engineered to meet or exceed OEM standards. When you choose Doc's Diesel, you're choosing to invest in performance, durability, and peace of mind for your truck.

Doc’s Diesel is located in small-town Ohio and serves customers in all 50 states. We recently completed our new warehouse, and our grassroots company is growing rapidly thanks to our amazing team and customers. Doc’s Diesel’s speedy delivery, genuine quality, friendly and knowledgeable customer service, and top-notch ordering process make diesel vehicle maintenance time quick and easy. At Doc’s Diesel, you’re not just buying filters - you’re joining the spirit of working hard, dreaming big, and family values.

Doc’s Diesel: Your One Stop Shop for Replacement Diesel Filters + Parts

It’s time for a change; filter change that is! We are proud to be your one-stop shop for everything diesel from fuel filters to oil filters to complete maintenance kits.We have everything you need to keep your truck running efficiently. Protect your engine and your pocket with our premium line of diesel parts that have been rigorously tested to meet or exceed OEM standards. Learn more in our video below.

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