635K MILES AND COUNTING

I've been using Doc's filters exclusively on my Ram 6.7 for 4 years now.
– Kevin, MO

That's a real Doc's customer, on a real truck. Results like that don't happen by accident. Here's what's behind them.

Made in the USA

QUALITY ISN'T AN ACCIDENT.

Doc's parts are designed by our team in Bryan, Ohio, built to exact specifications, and inspected before they ship. Every production run. Not a random sample check, every run.

All of our oil, additives, and fluids are manufactured in the United States. Others are manufactured globally, but always under our specifications and quality standards.

What we will tell you is this: where a part is manufactured doesn't determine quality. Who is accountable for it does. Our team in Ohio sets the specs, controls the standards, and signs off on every production run before the product ships. That accountability doesn't change based on where a part is made.

One more thing worth knowing: global manufacturing is the industry standard. The parts at your dealership and the name-brand filters at the parts store come from the same global supply chains. The difference is you're paying a significant markup for the name on the box. The manufacturing origin isn't unique to Doc's. The accountability behind our parts is.

The brands that have given imported auto parts a bad name didn't fail because of geography. They failed because nobody was watching. We're watching.

REAL TRUCKS. REAL MILES. REAL RESULTS.

We could tell you our parts are OEM quality. Our customers already are.

★★★★★
“2014 F-250 4x4. 255k miles! This is my 3rd round with DOC's, quick shipment, reasonably priced and the filters work awesome! Highly recommend and will buy again!!”
Darren, OK
★★★★★
“Overall, this is an excellent product. Along with the rest of their kit. Best price anywhere along with great care and quality shipping of products. OEM or better fitment. Couldn't ask for anything better.”
Nick, TX
★★★★★
“I bought one just to give them a try and then forgot to change it. It lasted so much longer than the recommended mileage before I had any issue that I went ahead and have one automatically sent to my house as needed so I remember to change it on time.”
Terrence, IL
★★★★★
“Docs is my go to. I have been a customer for several years now. Products are always spot on and high quality. Will be a customer as long as I own a Diesel Truck. Keep up the great work Docs!”
Dale, TX
★★★★★
“Absolutely love this kit from Doc's. Aside from affordability its quality is up there. 100% will buy again. I highly recommend their brakes too. I'm still blown away at the change from install nearly a month ago.”
John, GA
★★★★★
“Really affordable price but with identical rating and specs on the filters. I've been running docs fuel and oil filters for about 40k miles now and no issues what so ever. I used to work as a technician for Ford Dealership and can personally say the quality and craftsmanship is really good. I highly recommend.”
Jose, TX

SIMPLE GUARANTEE. NO FINE PRINT.

Every Doc's part is backed by a 30-day money-back guarantee. If it doesn't fit, doesn't perform, or you're not happy for any reason, we make it right. No runaround, no back and forth.

That's not something we say. It's something we do. We've built the whole business on it.

Are these actually as good as OEM?

The customers who've put 400,000 miles on Doc's parts say yes.

We say: find out for yourself. Order, install, run your truck. If it's not right, we'll make it right. That's the whole deal.

Doc's was named after our CEO, Max Nihart’s, Grandpa Doc, who spent 50 years in the auto parts industry. His philosophy was no BS. That's still ours.

Fast Free US Shipping on orders over $99 | OEM Performance | Fitment Guaranteed