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MAINTENANCE MADE EASY
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diesel essentials
Explore our best-selling maintenance products by category. Click to discover top-rated gear.
Doc's Diesel
Ford 6.7L Powerstroke 10R140 Transmission Service Kit 2020-2025
Replaces LC3Z-7G186-A, LC3P-7G186-AC, LC3Z-7F396-A, LC3Z-7F396-B
Doc's Diesel
Chevrolet/GMC 6.6L Duramax 10L1000 L5P Transmission Service Kit 2020-2025
Replaces 24298004
Doc's Diesel
RAM 6.7L Cummins 2WD/4WD Premium E-Coated Front Wheel Hub Assemblies Kit 2019-2024
Replaces 515206
Doc's Diesel
RAM 6.7L Cummins 2WD/4WD Premium E-Coated Front Wheel Hub Assembly 2014-2018 2500, 2013-2018 3500
Replaces 515162
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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.
SAE OFFICIAL
IT’S IN THE DETAILS
Tested and inspected to meet OEM Micron and efficiency ratings. View our test results from SGS, the world's leading inspection & certification company. Additional reports are added regularly.
SAE OFFICIAL
IT’S IN THE DETAILS
Tested and inspected to meet OEM Micron and efficiency ratings. View our test results from SGS, the world's leading inspection & certification company. Additional reports are added regularly.
USED BY THE BEST
OVER 350,000+ HAPPY CUSTOMERS
You don't have to take our word for it.
Doc's actually has some dang good filters, heck even their sticker pack actually comes with usable stickers that ain’t so small nobody notices them. Ordered fuel filters for my 2016 6.7 Cummins and Doc's sent updates for every step of the way, and they shipped to my house within 3 days. Cheaper than the parts store, noticeable quality, and shipped out the same day I ordered em. So overall nothing bad to say and will definitely be upgrading my fleet to all docs filters.
TB Cattle Co
It was amazing. Everything was easy to use and very helpful having everything in one package.
Anthony M.
I've heard good things from a lot of a different "truck-fluencers" as I like to call them, so since I own a diesel, I had to see what all the hype was about. The items I ordered shipped fast and seem to be great quality. Also love the fact that they sent 4 nice stickers along with it!
John C.
I use the filters and oil kits to service my fleet of trucks (4). I own a landscaping company and we are hard on our trucks, and it’s nice to have a convenient way to buy the correct amount of oil and all filters in one place.
Kameron C.
I did my oil change with y’all’s 10 W 30 full synthetic with the hot shot secret with fuel filters and immediately knew the difference and sounded better. Ran better. I was getting 20 miles to the gallon now I’m upwards of 24. Absolutely getting this for the rest of its life and my next truck’s life.
Brandon H.
Easy to order, had a question got a call back very quickly and product was very nice stuff! Definitely will continue ordering my oil changes through docs 🤙
Dakotah W.
OVER 350,000+ HAPPY CUSTOMERS
You don't have to take our word for it.
I did my oil change with y’all’s 10 W 30 full synthetic with the hot shot secret with fuel filters and immediately knew the difference and sounded better. Ran better. I was getting 20 miles to the gallon now I’m upwards of 24. Absolutely getting this for the rest of its life and my next truck’s life.
Brandon H.
I've heard good things from a lot of a different "truck-fluencers" as I like to call them, so since I own a diesel, I had to see what all the hype was about. The items I ordered shipped fast and seem to be great quality. Also love the fact that they sent 4 nice stickers along with it!
John C.
I use the filters and oil kits to service my fleet of trucks (4). I own a landscaping company and we are hard on our trucks, and it’s nice to have a convenient way to buy the correct amount of oil and all filters in one place.
Kameron C.
It was amazing. Everything was easy to use and very helpful having everything in one package.
Anthony M.
Easy to order, had a question got a call back very quickly and product was very nice stuff! Definitely will continue ordering my oil changes through docs 🤙
Dakotah W.