Small town roots, big dreams.
Aftermarket Diesel Filters
It's in my blood.

My Grandpa Doc was my hero (so much I named my business after him). Grandpa Doc, this one is for you! Doc's Diesel cures a painpoint of having to buy one filter at one store and another filter the next as they may not carry the whole line or out of stock. With Doc's Diesel a customer can take control of their maintenance plan and order a full filter kit in one spot. Get the job done right with Doc's Diesel!

Doc’s Diesel is the new standard in aftermarket Diesel Filters. Our Premium Diesel Filter Line includes: Fuel, Oil, Cabin Air, Water Separator, and Air Filters. We set ourselves apart in a few different ways, mainly being the quality of our product. Our aftermarket parts are spec'd and designed to meet or exceed the quality and performance of the original filters (OEM's) that come in your vehicle