Doc's Diesel Heavy-Duty 2016-2022 GM Colorado/Canyon 2.8L Duramax® Parts That Work as Hard as You Do

Running a Duramax? Then you already know it’s a beast built for hauling, towing, and getting the job done. At Doc’s Diesel, we’ve got the replacement parts your Duramax needs to keep performing at its best, whether you're hitting the job site or the open road. We’re talking premium quality, OEM-matching fit, and the kind of performance you can count on mile after mile.

OEM-Quality Parts. Fitment You Can Trust.

Every Duramax-compatible part we carry is designed to meet or exceed OEM standards, so it fits right, works right, and lasts long. Whether you're after a full filter kit, oil filters, hub assemblies, or wiper blades, our parts are tested tough and built to handle real diesel driving. And with our Doc’s Fitment Guarantee, if it doesn’t fit your rig, we’ll fix it with no extra hassle.

Get The Right Parts Right Now

Not quite sure what fits your Chevrolet or GMC? No worries. Use our Vehicle Lookup Tool to narrow it down by year, model, and engine, and we’ll serve up only the parts that match your truck. It’s the fastest, easiest way to get exactly what your Duramax needs. No guesswork, no wasted time.

Free Shipping on All U.S. Orders of $99+

Load up your cart—when your order hits $99 or more, shipping’s on us. Whether you're grabbing a few essentials or stocking up for the season, we’ll ship it free anywhere in the U.S. That means more of your budget stays where it should: in your build or your tank.

Built for Duramax Drivers, Backed by Diesel Enthusiasts

We know Duramax engines. More importantly, we know what diesel owners expect: no-nonsense parts that deliver, and a shop you can count on. That’s what we’re about at Doc’s Diesel. We’re not some big-box operation. We’re diesel folks, and we treat your truck like it’s one of our own. Ready to wrench or just need a quick refresh? Check out our complete Duramax collection and shop with confidence.