From the workbench to the weekend, our shirts are built to last and designed to impress. Breathable, comfortable, and rugged - they're the go-to for anyone who demands the best in both durability and style. Doc’s Diesel is the new standard in aftermarket Diesel Filters. Our Premium Diesel Filter Line includes: Fuel, Oil, Cabin Air, Water Separator, and Air Filters. We proudly ship our products right from our warehouse in Northwest Ohio.