NEXT LEVEL PROTECTION STARTS NOW

E-COATED HUB ASSEMBLIES

New hubs, same mission: outlast everything. Now with E-Coating for next-level protection protection against rust, rain, and road salt.
SHOP HUBS
NEXT LEVEL PROTECTION STARTS NOW

E-COATED HUB ASSEMBLIES

New hubs, same mission: outlast everything.
Now with E-Coating for next-level protection against rust, rain, and road salt.
SHOP HUBS

FITMENT GUARANTEED

 • 

FREE USA SHIPPING OVER $99

 • 

MAINTENANCE MADE EASY

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3RD-PARTY TESTED

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One Legendary Truck. One Lucky Winner.
Don't miss your chance to win a 2025 Ram 2500 6.7L Cummins
Enter now. No purchase necessary.
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Built for the Long Haul
Heavy-Duty Braking, Zero Compromise
From mountain passes to job sites, Doc's brake kits deliver relentless stopping strength where it counts most.
SHOP BRAKES

FIND THE PARTS YOUR TRUCK NEEDS

SELECT YOUR VEHICLE

CLEAR FILTERS

diesel essentials

Explore our best-selling maintenance products by category. Click to discover top-rated gear.

NEW
Doc's Diesel Ford 6.7L Powerstroke CCV Filter 2023-2024 Doc's Diesel Ford 6.7L Powerstroke CCV Filter 2023-2024

Doc's Diesel

Ford 6.7L Powerstroke F-250, F-350 CCV Filter 2023-2024

Replaces PC3Z-6A785-A

$113.99
570 entries 5x
NEW
Doc's Diesel RAM 6.7L Cummins 2WD/4WD Premium E-Coated Front Wheel Hub Assemblies Kit 2019-2024

Doc's Diesel

RAM 6.7L Cummins 2WD/4WD Premium E-Coated Front Wheel Hub Assemblies Kit 2019-2024

Replaces 515206

$503.99
2520 entries 5x
NEW
Doc's Diesel Chevrolet/GMC 6.6L Duramax Front and Rear Brake Pads and Rotors Kit 2011-2019 Doc's Diesel High Carbon Brake Rotors being placed on to a car lifestyle

Doc's Diesel

Chevrolet/GMC 6.6L Duramax Front and Rear Brake Pads and Rotors Kit 2011-2019

$624.99
3125 entries 5x
NEW
Doc's Diesel RAM 6.7L Cummins 2WD/4WD Premium E-Coated Front Wheel Hub Assembly 2013-2018

Doc's Diesel

RAM 6.7L Cummins 2WD/4WD Premium E-Coated Front Wheel Hub Assembly 2014-2018 2500, 2013-2018 3500

Replaces 515162

$249.99
1250 entries 5x
NEW
Doc's Diesel RAM 6.7L Cummins Severe Duty Front and Rear Brake Pads Kit 2009-2018 Doc's Diesel Severe-Duty Brake Pads lifestyle

Doc's Diesel

RAM 6.7L Cummins Severe Duty Front and Rear Brake Pads Kit 2009-2018

$136.99
685 entries 5x
NEW
Doc's Diesel Black Hawk Vintage Tee Doc's Diesel Black Hawk Vintage Tee

Doc's Diesel

Black Hawk Vintage Tee

$29.99
150 entries 5x
NEW
Doc's Diesel Ford 6.7L Powerstroke High Carbon Front Brake Rotor Set 2013-2022 Doc's Diesel High Carbon Brake Rotors being placed on to a car lifestyle

Doc's Diesel

Ford 6.7L Powerstroke F250/F350 High Carbon Front Brake Rotor Set 2013-2022

$257.99
1290 entries 5x
NEW
Doc's Diesel Ford 6.7L Powerstroke Severe Duty Rear Brake Pads 2013-2022 Doc's Diesel Severe-Duty Brake Pads lifestyle

Doc's Diesel

Ford 6.7L Powerstroke Severe-Duty Rear Brake Pads 2012-2022 F250, 2013-2022 F350, 2013-2016 F450

Replaces 1691

$55.99
280 entries 5x
NEW
Doc's Diesel Stealth Mug Doc's Diesel Stealth Mug lifestyle

Doc's Diesel

Stealth Mug

15oz

$54.99
275 entries 5x
NEW
Doc's Diesel Chevrolet/GMC 6.6L Duramax Severe Duty Front and Rear Brake Pads Kit 2011-2019 Doc's Diesel Severe-Duty Brake Pads lifestyle

Doc's Diesel

Chevrolet/GMC 6.6L Duramax Severe Duty Front and Rear Brake Pads Kit 2011-2019

$111.99
560 entries 5x

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WHY DOC'S?

If maintaining your truck’s peak performance is your priority, you’ve come to the right place. Doc’s Diesel is your one-stop online shop for diesel filter maintenance. Genuine quality, 3rd-party tested filters at a great price.

MAINTENANCE KITS

We save you time and money by including everything you need in one package - no more hunting for separate parts.

PREMIUM PARTS

High quality filters and parts meet or exceed OEM standards without straining your wallet.

FITMENT GUARANTEED

If it doesn't fit, we will offer you a replacement or a refund (*some conditions apply).

EXPLORE PRODUCT TYPES

NEW! HUB ASSEMBLIES Arrow icon

NEW! HUB ASSEMBLIES

Enhance performance with Doc’s E-coated Hub Assemblies. Designed to perform in the harshest conditions, from off-road adventures to heavy-duty hauling.
BRAKE PADS & ROTORS Arrow icon

BRAKE PADS & ROTORS

Doc's Brake Pads & Rotors deliver powerful, quiet, and reliable braking for heavy-duty diesel trucks, even in the toughest conditions.
COMPLETE FILTER KITS Arrow icon

Complete Filter Kits

Save time and money with Doc's Filter Kits. All the filters you need in one place - no more hunting for separate filters.
TRANSMISSION FILTERS Arrow icon

Transmission Filters

Doc's Transmission Filters trap impurities in the fluid, ensuring smooth gear shifts and preventing expensive repairs. 
FUEL FILTERS Arrow icon

Fuel Filters

Doc's premium replacement Fuel Filters remove contaminants from the fuel before they reach the engine to help prevent engine damage.
FUEL/WATER SEPARATORS Arrow icon

Fuel/Water Separators

Doc's Fuel/Water Separators use high-grade filter media for maximum filtration and minimal flow restriction.
OIL FILTERS Arrow icon

Oil Filters

Doc's Oil Filters promote optimal engine health, reduced friction, and enhanced fuel efficiency.
OIL/ADDITIVES Arrow icon

Oil/Additives

Doc's collection of premium oils, fluids, and other additives + treatments are designed to keep your car running smoothly and efficiently.
Air Filters Collection Image
ENGINE AIR FILTERS Arrow icon

Engine Air Filters

Doc's Engine Air Filters protect against debris and minimize engine wear, ensuring sustained performance.
cabin air filter
CABIN AIR FILTERS Arrow icon

Cabin Air Filters

Doc's Cabin Air Filters ensure enhanced air quality and promote high airflow.
HOODIES, HATS, & MORE Arrow icon

Hoodies, Hats, & More

Our Doc's Diesel apparel and merch is designed for comfort and durability.

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.

SEE TEST RESULTS

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.

SEE TEST RESULTS
1
1

Heavy duty filter body to withstand more than five times normal oil pressure.

2
2

Heat treated steel coil compression spring to hold all components in place.

3
3

Pressure relief valve to ensure positive engine lubrication.

4
4

Traditional metal end caps on filter cartridges.

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5

One-piece spiral wound corrugated center tube to maximize collapse strength.

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6

Synthetic blend media selected to maximize efficiency and minimize resistance.

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7

Anti-drainback valve to prevent dry starts.

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8

Heavy duty base plate with precision forged threads.

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9

Lathe-cut nitrile sealing gasket for maximum sealing power in all conditions.

1

Synthetic blend media selected to maximize efficiency and minimize resistance.

USED BY THE BEST

Over 350,000+ Happy Customers

Docs Diesel Filter Housing
Five-Stars Review

"Absolutely the best place to get great deals AND packages designed to provide EVERYTHING you need to complete the job!"

Melanie Customer verified badge VERIFIED BUYER

Docs Diesel Parts
Five-Stars Review

I was thinking about buying this for too long, bought it and I love it. fits perfect, and it’s super soft. I’ve also bought filters from them and they have amazing products over all and shipping is on point.

John Customer verified badge VERIFIED BUYER

Docs Diesel Filter
Five-Stars Review

First time customer, but Doc’s will be my go to from now on. Filters were excellent quality and fit like OEM.

Alex Customer verified badge VERIFIED BUYER

See All Reviews

SMALL TOWN ROOTS, BIG DREAMS

Owned and operated in small-town Ohio with a history for aftermarket automotive parts.

ABOUT DOC's