A cheap kit stops looking cheap when the truck is stuck in the driveway and one key part is missing. Before you spend money, you need three clear answers: Will it fit? What else do I need? Who will help if the parts do not match?
This guide compares DPFExhaust options for Ram 2500 and 3500 pickups. It uses listed parts and fitment limits, not a claimed road test or a sales ranking.
Which 6.7 Cummins year group is yours?
The 6.7 Cummins is the turbo diesel inline-six used in Ram heavy-duty trucks. It arrived in pickups during 2007, so a 2007 truck needs an engine check first. The Cummins engine history explains the change from the 5.9.
Use the groups below to shop. They are fitment groups, not “Stage 1” or “Stage 2” power levels. Those stage names can mean different things from one seller to the next.
| Your Ram pickup | What owners need to sort out | Where to start |
|---|---|---|
| 2007.5–2009 | Early-truck fit, DPF and EGR parts, and old changes to the truck. | Dedicated 2007.5–2009 bundle. |
| 2010–2012 | DPF/EGR concerns and the right pickup exhaust. No pickup DEF system. | Dedicated 2010–2012 bundle. |
| 2013–2017 | DPF, EGR and SCR/DEF questions. Is the tuner part of the price? | Year-matched all-in-one package. |
| 2018 | The same broad systems, with a separate computer-support check. | An exact 2018 package option. |
| 2019–2021 | Year, transmission and computer support. | Dedicated 2019–2021 package. |
| 2022–2024 | Whether a low hardware price leaves out key support or parts. | A full written quote. No complete bundle was confirmed here. |
| 2025–2026 | Exact-year fit for the newer truck. | Check 2025 and 2026 on their own. Do not stretch an older kit’s year range. |
Have a Chassis Cab? Stop before using this pickup chart. A Ram 3500 pickup and a 3500 Chassis Cab can need different parts. A flatbed alone does not tell you which truck you have.
What should a full 6.7 Cummins kit include?
When you compare offers, split them into three groups:
- Pipe only: An exhaust part. It is not a full package.
- Hardware bundle: Exhaust and engine-bay parts. A tuner may be sold on its own.
- All-in-one package: Listed hardware plus a tuner package. Check the device, files, fees and support terms.
The DPF traps soot. EGR sends some exhaust back through the engine. SCR uses DEF to help cut NOx. A kit name can group these systems together, but the parts in the box still vary.
Ask for a list of what is missing. That often tells you more than “complete kit.” Check clamps, seals, the chosen exhaust section, the device and any paid service.
2007.5–2009: start with the early-truck bundle
On an older used Ram, the first concern is what a past owner changed. Check the truck as it sits now. A year on the title will not reveal an old exhaust swap or parts from another build.
DPFExhaust option: The 2007.5–2009 all-in-one kit lists EGR hardware, an exhaust choice and a Mini Maxx V1 or V2 option. It is the year-specific place to start your comparison.
Its title includes “DEF.” That does not mean these pickups came with DEF. Focus on the listed DPF/EGR parts and the exact exhaust choice.
[[product-recommend:1]]2010–2012: use the pickup-specific package
A pipe may fit a broad range of years while the EGR parts in a bundle do not. Check the whole package before you assume an early 6.7 kit will fit.
DPFExhaust option: The 2010–2012 all-in-one kit lists EGR hardware, an exhaust choice and a Mini Maxx V1 or V2 option. The listing excludes Chassis Cab trucks and trucks with air-ride suspension.
These pickups did not use DEF. The 2012 Ram diesel manual lists DEF for Chassis Cab only.
If repeat regens brought you here, get the fault checked first. Use the DPF regen fault checklist to plan that talk with the shop.
[[product-recommend:2]]2013–2018: compare full contents, then check 2018 support
These trucks add SCR/DEF to the buying questions. A shopper who wants one box may expect the exhaust, EGR parts and tuner to be included. A low-priced hardware bundle may leave out that last item.
DPFExhaust option: The EFI Live all-in-one package lists separate choices for 2013–2017, 2018 and 2019–2021. It combines an EFI Live package, EGR hardware and an exhaust choice. Match both the year and exhaust option.
Check before you choose: This listing excludes Chassis Cab and PTO-equipped trucks. PTO means power take-off, used to run some work-truck equipment.
For a 2018 truck, ask about its current engine computer and software. DPFExhaust’s Mini Maxx listing has a separate limit: the supported original PCM part number must start with a number. A letter-prefixed number may not work. PCM means the truck’s powertrain control module.
That is a limit of that listed package. It is not a rule for every tuner. Get support confirmed for your truck before paying.
[[product-recommend:3]]2019–2021: match the transmission as well as the year
“Fits a 2020 Cummins” is only part of the answer. The package may also depend on the transmission and engine computer.
DPFExhaust option: The 2019–2021 EZ LYNK all-in-one package lists 2019–2020 Aisin, 2019–2020 68RFE and 2021 options. It also lists EGR parts and exhaust choices.
The listing excludes Chassis Cab and PTO use. Pick the right year and transmission, then ask what device, files and support are included.
The Mini Maxx package for these years carries the PCM limit noted above. EFI Live is another listed option. There is no tested winner here for fuel mileage or long-term life. The useful choice is the package with clear support for your exact truck.
[[product-recommend:4]]2022–2026: do not buy on the pipe’s year range alone
A listing marked “2019–2025” can make a newer truck look simple to shop for. But hardware fit and full computer support are two separate checks.
The DPFExhaust hardware listing for those years says a tuner is required. Its shown options cover EGR color and exhaust type. They do not prove that a full supported package is included for a 2022–2024 truck.
No complete 2022–2024 bundle was confirmed for this guide. Get a full quote tied to your truck before you buy parts. Do not carry a 2019–2021 kit’s support over to a newer model.
Check 2025 and 2026 on their own, too. “2026 Guide” is the year of this article’s review. It does not mean each kit fits a 2026 Ram.
Want a tailpipe upgrade while keeping the DPF?
If your goal is a new tailpipe or a different steel option, a DPF-back exhaust is worth a look. It replaces the section after the factory filter. It leaves the DPF in place.
DPFExhaust option: The 5-inch DPF-back system lists 2013–2025 Ram 2500/3500 pickups, with T409 or T304 steel choices.
One easy-to-miss limit: The listing excludes 2013–2018 Crew Cab Short Bed trucks. It lists 2019–2025 pickup cab and bed options. Check your truck and the pipe joint size. No 2026 fit was confirmed.
This exhaust will not fix a clogged DPF, an EGR fault or a DEF warning. If repair cost is your concern, start with the DPF cleaning vs. replacement guide.
Compare DPF-back exhaust options
Which kit is most popular—and what makes one worth the price?
There is no verified sales winner in this guide. A review count or a forum thread does not prove which kit sells most.
For a fair price check, put two quotes side by side. Mark what each one includes:
- The same exhaust type and pipe size.
- The same scope of EGR hardware.
- A device, the needed files and any service fees.
- Support for the exact year, computer and transmission.
- Return terms for hardware and custom services.
A pipe-only price cannot tell you the cost of a full package. And a bigger pipe does not prove better mileage, less cab drone or more towing capacity.
What U.S. owners need to know before buying
For a road-driven Ram, keep the required emissions controls. EPA’s aftermarket parts rules do not allow parts that bypass or remove them. An “off-road only” label does not by itself make a delete lawful.
The 2026 DEF guidance covers approved monitoring changes. It does not approve the delete kits in this guide.
Before you pay for a fault repair, ask a Ram dealer to check your VIN. Some trucks may have recall or special warranty coverage. See the Cummins recall warranty details for the listed terms.
What to send for a useful fitment check
“Will this fit my 6.7?” leaves too much open. Send the year, 2500 or 3500 model, pickup or Chassis Cab, cab and bed size, suspension and transmission. Add the package name and option you want.
For a tuner package, ask which computer details the supplier needs. If the truck has been changed, include photos. You can send the details to DPFExhaust fitment support.
6.7 Cummins Kit FAQs
Q：Does a 2012 Ram 6.7 pickup have DEF?
A：No. The 2012 Ram diesel manual lists DEF for Chassis Cab only. A seller may still use DEF in a broad kit title.
Q：Does every “full kit” include a tuner?
A：No. Some bundles contain hardware only. Read the parts list and ask whether the device, files and services are part of the price.
Q：Why is 2018 listed on its own?
A：Some packages split 2018 from 2013–2017 and set limits on computer support. That does not mean all the truck’s hardware changed that year.
Q：Will a 2019–2021 package work on my 2023?
A：Do not assume it will. A supported range ending in 2021 gives you no proof of 2023 support.
Q：Can a 3500 pickup kit fit a 3500 Chassis Cab?
A：The shared model number is not enough. Several pickup packages exclude Chassis Cab. Check a dedicated listing for that truck.
Q：Should I choose a 4-inch or 5-inch exhaust?
A：Check fit, joint size, exhaust layout and sound goals first. Diameter alone does not prove more power or less drone. Ask for sound details from the same truck and exhaust setup.
Q：Will a kit guarantee better fuel mileage?
A：No. This guide has no controlled test that supports a fixed mileage gain. Do not build your budget around a promised MPG increase.
Q：Is a DPF-back exhaust the same as a DPF delete?
A：No. A DPF-back system starts after the filter and keeps it in place. It does not fix faults in the filter or DEF system.
Q：Did the 2026 DEF changes make delete kits legal?
A：No blanket approval was established. The 2026 EPA DEF update deals with approved monitoring changes, not approval of these kits.
Q：Which kit should I check first?
A：Start with the package for your exact year group. Check the missing items and support limits next. If you drive on U.S. roads, retain the required emissions parts and choose repairs or upgrades that keep them in place.
