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.
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