Doc's Diesel Staple Snapback Hat 2025-2026 Doc’s Diesel Maintenance Kits save

Doc’s Diesel Maintenance Kits save you time and money by giving you the filters you need in one convenient package

0L Cummins Fuel/Water Separator 2019-2024: 3 Micron @ 99

Doc’s Diesel recommends changing transmission filters earlier than OEM recommended guidelines for preventative maintenance and to ensure the longevity of your transmission

7L Cummins Air Filter 2007-2024

Used for every fill up this winter

Doc's Diesel Staple Snapback Hat 2025-2026 Doc’s Diesel Maintenance Kits saveAbout Product: Rev up your style with our tough, adjustable snapback caps, built for hard workers who know their way around an engine. Whether you're wrenching under the hood or hauling down the highway, these hats keep you cool, comfortable, and ready for anything. Materials: Front: 60% Cotton 40% Polyester Back: 100% Polyester Adjustable snapback closure