FROM GIVEAWAY TO GARAGE
You work hard. Sometimes you win big. This guy did both. Congrats to our new buddy KEITH for winning our 2025 6.7L Cummins Truck Giveaway!
FROM GIVEAWAY TO GARAGE
You work hard. Sometimes you win big. This guy did both. Congrats to our new buddy KEITH for winning our 2025 6.7L Cummins Truck Giveaway!
DIESEL TRUCK MAINTENANCE MADE EASY.
Doc’s Diesel is your trusted online source for premium maintenance parts built specifically for Cummins, Powerstroke, Duramax, and EcoDiesel trucks. From filters and brakes to full oil kits, we make it easy to get the right parts without the inflated prices you’ll find at dealerships or parts stores.
Whether you're a weekend wrench or a full-time heavy hauler, Doc’s helps you skip the markup, avoid the breakdowns, and keep your truck running strong—all without wasting time chasing parts.
DIESEL TRUCK MAINTENANCE MADE EASY.
Doc’s Diesel is your trusted online source for premium maintenance parts built specifically for Cummins, Powerstroke, Duramax, and EcoDiesel trucks. From filters and brakes to full oil kits, we make it easy to get the right parts without the inflated prices you’ll find at dealerships or parts stores.
Whether you're a weekend wrench or a full-time heavy hauler, Doc’s helps you skip the markup, avoid the breakdowns, and keep your truck running strong—all without wasting time chasing parts.
diesel essentials
Explore our best-selling maintenance products by category. Click to discover top-rated gear.
Let customers speak for us
Outstanding customer service, with a quality product that delivers!
Easy to use website, great products, arrived on time, everything fit. What more can you say?
Thanks, Docs.
Delivered on time and well packaged. A+
Great products oil and filter all in one order. Can’t get much easier than that.
Consistency and reliability are a big plus when it comes to ordering online, so finding a business that delivers a great experience is a win! I will be using them again.
When I went to check my Amazon filter for dirt content inside the pleat the filter came apart! Docs are 100% better when it comes to quality. I feel comfortable to run the filter longer than 50% on my filter monitor.
Packaged well and received everything I
After installing these in place of some very worn out OEM pads I'm able to say I'm quite happy with them. They installed perfectly, and I noticed an instant difference with them.
My only minor gripe is with the replacement retention clips that are provided. They felt noticeably less durable than the old OEM ones and bent out of shape very fast upon trying to install several of the pads. I ended up simply transferring the old clips over to the new pads, and everything fit flawlessly.
I appreciate the convenience of ordering everything that I need from one site and the shipping is fast.
Quality product for a decent price glad to see they have some aftermarket stuff that works well and fits like it’s supposed to definitely recommend
How outstanding parts delivery was fast? Good quality parts. Keep my old Ram running forever. Thank you
I have ordered many parts from these guys. I absolutely love that they are local to Ohio. Their story is awsome but their products are spot on!! Best brakes I have ever ordered and man these prices are great. Super happy with the quality. AND THE STICKERS!!!
Engine running smoother, and better mpg, great product
This is the second time I’ve serviced my transmission first time with this set up from Dr. Diesel took my 45 foot horse trailer above 10,000 feet and Colorado last week transmission shifted great temperatures were down 10 to 12° and the cost of this kit as well below others
Full package as promised. Will reorder when needed