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Diesel Truck Parts And Accessories

2017 - 2019 Chevy/GMC 6.6L L5P Duramax

Model year 2017 marked a big change for GM with the release of their highly acclaimed L5P Duramax coming hard out of the gates with a class leading 445 horsepower to take the holeshot against the comp ... read more

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Model year 2017 marked a big change for GM with the release of their highly acclaimed L5P Duramax coming hard out of the gates with a class leading 445 horsepower to take the holeshot against the competition, at least for the time being. Initial rumors were leading many to believe that there would be a displacement increase in order to achieve their numbers, which has yet to happen since the initial release of the Duramax in 2001, but the rumors were proven false as it maintains its 6.6L displacement, merely surrounded by a myriad of other changes and upgrades. For the most part, no stone was left unturned and no major component left unchanged from its predecessor, the LML engine that was carried from 2011 through 2016.

The block was strengthened, larger crankshaft, stronger rods, cast aluminum remelted pistons, new cam profile, upgraded fuel system, revised Allison 1000 transmission.....should we keep going? Overall, they did an excellent job of ensuring that with the increase in horsepower came more robust components capable of supporting that additional power. Oh yeah, and that hood scoop, yep, its fully functional, delivering an increase in airflow of 60%.

Now, with all of these factory upgrades, what does this mean for the aftermarket performance industry? Simple, it only makes adding more reliable horsepower that much easier and done so with peace of mind that the integrity of the vehicle will not be diminished. As always, the aftermarket will not only aid in increasing power and capabilities, but tailoring the vehicle more towards each individual driver, and not merely produced for the masses.

If you have any questions about which products are right for you and your truck, do not hesitate to give us a call and we would be happy to assist.

We get a lot of calls and e-mails each day with various product, vehicle, and installation questions. Some are completely off the wall and can even catch us off guard at times, but many others are fairly routine, so we thought we'd post some of the most popular questions that can hopefully be a good resource for you.

Q: I have an EFILive AutoCal for my earlier Duramax. Can that same tuner work on my L5P Duramax?
A: In short, no, EFILive has not yet updated their files to allow L5P tuning to be loaded into their AutoCal tuning devices.

Q: Will a DPF (Diesel Particulate Filter) back system provide more sound to my truck?
A: Generally speaking no, the emissions equipment upstream will still act as a muffler. However, that doesn't mean installation will not help in other areas by improving exhaust flow. While minor, the benefits are noticeable, plus an aftermarket exhaust looks way better than the stock exhaust.

Q: I'm looking at an exhaust kit on your website, but it doesn't state which cab and bed configuration it fits, will this fit my application?
A: In most cases, unless it is specifically stated as fitting a certain configuration, all exhaust kits on our website will fit all cab and bed lengths. Further, most kits will not fit cab and chassis applications unless otherwise noted.

Q: I'm looking at this 5" (or other) exhaust kit, but my truck only has a 4" exhaust now. Does this 5" exhaust include an adapter / reducer?
A: Yes, the exhaust systems we sell will adapt down to fit the application at the designated starting point (turbo back, cat back, DPF back, etc.) for a hassle free installation.

Q: What are EGT's?
A: EGT stands for Exhaust Gas Temperature, which is the temperature of the exhaust leaving your engine. This measurement is typically measured before the turbo to ensure you are not overheating components. For most applications, we recommend not exceeding 1300 degrees.

Q: Will the products you offer void my warranty?
A: Some parts may void your warranty and some may not. We recommend researching the Magnuson-Moss Warranty Act that specifically protects consumers when choosing to install aftermarket components on their vehicles, as well as consulting with your local dealer.

If you've got a question about your Duramax, feel free to give us a call at 888-99-DIESEL and we would be happy to assist.

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