Quick Answer: 2013–2018 Ram 6.7 DPF Delete Pipe Install
Begin a 2013–2018 Ram 2500/3500 6.7L Cummins DPF-pipe installation by identifying the replacement endpoints. A short DPF section keeps the original downpipe and rear exhaust. The full single-exit reference shown here starts at the turbo: fit the front and intermediate pipes, hang the rear route, then select and measure the cab-length extension before final tightening.
Before you start: Use the single-exit layout for this job, rather than the separate dual system. The illustrations help identify the reused turbo clamp, cab/box extensions and rear rubber-mount positions: 2013–2018 Ram 6.7L DPF Delete Exhaust Installation PDF.
Match The Cab And Box Before Chasing A Rear Fit Problem
A rear pipe that will not reach can be a cab-length or support-position problem. Put the single rear outlet in its factory mounts before judging the center gap. A short DPF replacement and a full front-to-tailpipe route do not use the same extension plan.
Start with your cab, box and actual parts list. Then keep the reused turbo clamp and rubber mounts organized so the rear route has the supports it needs.
U.S. emissions rules prohibit tampering with certified controls. A race-use label alone does not establish an exemption.
Match The Ram Single-Exit Route
Tip — Short replacement or full system? The illustrated example starts at the turbo and includes a new single-exit rear route. If your parts replace only the DPF section, support and retain the downpipe and rear exhaust. Open only the replacement boundaries; do not follow the full-route turbo removal or cab-extension steps at those retained ends.
| Vehicle or layout check | What applies here |
|---|---|
| Truck covered | 2013–2018 Dodge Ram 2500/3500 6.7L Cummins. |
| Illustrated route | Full single-exit replacement, starting at the turbo-connected front pipe. |
| Short DPF-only version | Retains the front downpipe and rear exhaust; do not use full-system removal steps at retained ends. |
| Cab and box length | Select the extension after checking cab/box configuration and actual supported gap. |
Before You Remove Anything: This guide covers the 2013–2018 Dodge Ram 2500/3500 6.7L Cummins DPF-pipe task and the illustrated full single-exit route. Match cab, box length, pipe diameter, front connection and retained rear parts. Air suspension, a chassis cab, a different fuel-tank layout or non-stock rear hardware needs its own clearance check.
Cab And Box Layout
| Cab and box configuration | Single-exit length plan |
|---|---|
| Mega Cab / short box | Trial-fit the Mega Cab/short-box extension shown in the reference table. |
| Crew Cab / long box | Use the separate Crew Cab/long-box extension, then measure actual engagement. |
| Other cab/box combinations | Seat the rear route and measure the center gap. Do not use the dual-system list as a cut chart. |
The Single-Exit Front-To-Tailpipe Parts
| Component name | Illustrated manual reference | How to identify or fit it |
|---|---|---|
| Turbo-connected front pipe | 21151 | Reuses the matching stock turbo band clamp in this full-system example. |
| Intermediate pipe with hangers | 21452NB | Seats the center route in factory rubber mounts. |
| Mega Cab/short-box extension | 50012 | Reference-manual choice; check actual engagement before trimming. |
| Crew Cab/long-box extension | 50022 | Reference-manual choice for the full single-exit route. |
| Muffler or matching straight center | 6196 / selected straight option | Fit the actual option before measuring final length. |
| Over-axle pipe / single tailpipe | 21756 / 21757 | Seat the rear supports before securing the center. |
Use the shapes, pipe ends and welded supports in this drawing to match the components listed above.
Prepare The Reused Clamp And Exhaust Supports
| Tool Or Equipment | What You Need It For |
|---|---|
| Turbo band clamp | Flat screwdriver for the release method shown in ES04077BK. |
| Rear supports | Exhaust stands and access to the two stock rubber-mount positions ahead of the axle. |
| Clamps and flanges | Sockets and torque wrench matched to the supplied hardware and its specifications. |
Start with a cold exhaust. Support the truck by the approved method and support each heavy pipe before release. Never work under a jack alone.
Phase 1: Remove The Original Sections While Keeping The Front Clamp
Installer Tip: Check the stated rear rubber-mount locations before trimming a pipe. A mount left in its old position can make the correct pipe appear too long.
Step 1: Label The Stock Connections
Locate the sensor and DEF-injector connections shown in the PDF. Follow each wire to its plug and label it before release. Keep the wiring clear of the sections you will remove.
connector-release illustration for the original exhaust.
Close view of an original exhaust electrical connection. single-exit reference manual.
Step 2: Remove The Stock Sections
Support the SCR/filter and tailpipe sections. Release their flanges and rear clamp, then remove them. Keep their weight off the remaining front pipe.
Step 3: Save The Turbo Band Clamp
For the illustrated full route, support the old downpipe before loosening and unlatching the turbo band clamp. Free the clamp evenly around the flange and keep it if serviceable and compatible with the new connection. Remove the supported front pipe without levering on the turbo outlet. A short DPF-only replacement keeps the original downpipe and does not use this removal step.
Phase 2: Build The Selected Front And Center Route
Step 4: Fit The New Front Pipe Loosely
Put the needed clamps on the pipes before joining them. Fit the downpipe with the stock turbo band clamp. Snug it enough to hold position while still allowing adjustment.
Step 5: Add The Intermediate Pipe And Cab-Length Extension
Seat the intermediate hangers in the stock rubber mounts. The illustrated single-exit route lists a Mega Cab/short-box extension and a different Crew Cab/long-box extension; use the table to identify them. Trial-fit the selected section, leaving its joints loose until the center option and rear assembly are supported.
Step 6: Check The Muffler Section
Use the actual muffler or matching straight center section for the route being installed. Follow any direction marking. Support it while fitting the rear pipes; a different-length center option changes the extension measurement. Do not size the extension with a loose muffler on the floor.
Phase 3: Seat The Rear Supports And Set The Exit
Step 7: Fit The Over-Axle Pipe And Tailpipe
Fit the single over-axle pipe and tailpipe. Check the two factory crossmember support locations ahead of the rear axle. If their rubber isolators are still on the removed exhaust, transfer those blocks to the illustrated factory supports. Seat both before judging length.
Measure the Cab-Length Gap With the Rear Mounts Seated
Set the single outlet in its normal position and support the center section. Measure the gap between the supported adjoining pipe-end faces. For one section with two slip joints, add each actual insertion depth once. Do not apply that overlap rule to a flange or butt joint.
Mark a suitable plain end, cut squarely and remove burrs. If the route is too short, check the cab-length extension and pipe order. Do not use a dual-system extension list as the cut chart for this single-exit route.
Step 8: Set The Route And Tighten
Check each mount, the rear pipe route and the exit position. Once the full system sits right, tighten from the turbo toward the back. Use the proper specs for the supplied hardware.
Troubleshoot The Cab-Length And Rear-Mount Fit
| What you find | What to check before changing parts |
|---|---|
| Intermediate section stops short of the rear | Verify cab/box length, the selected extension and actual overlap. Restore the rear mounts before deciding the length is wrong. |
| Hanger rods miss the rubber blocks | Check whether the illustrated factory isolator relocation is needed. Do not pull a rod sideways into a distant mount. |
| Leak at the turbo connection | Support the front pipe, release the clamp and reseat the mating faces evenly before retightening. |
Final Check: Extension And Rear Rubber Mounts Agree
- Cab length: The single-exit extension choice and actual gap agree with the cab/box configuration.
- Rear mounts: Both required factory rubber blocks are on the illustrated supports ahead of the axle.
- Center section: The installed muffler or straight option and its joint engagement match the measurement.
- Front-to-rear pass: The front connection remains square as the single rear outlet is aligned and secured.
Before use, have the joints checked for leaks with the proper shop method. Do not run the engine in a closed space. If there is a new rattle, soot trace or loose support, let the exhaust cool and correct the cause. Follow the supplied hardware maker’s heat-cycle recheck instructions.
For one rear exit, the selected product is Turbo-Back / 5''. It is not the two-pipe DPF Race option or the dual system. single-exit reference manual must match the delivered center section before this procedure is used. View Turbo-Back / 5''
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Before Use: Calibration And Leak Checks
Arrange the compatible calibration and any device or service your exact package needs before use. Exhaust fitting does not include ECU programming. Diagnose warning lights, reduced power or leaks before operating the truck.
Conclusion
The single-exit route should hang from its intended mounts without pulling on the front clamp. Recheck the cab/box extension and the two rear rubber positions before blaming pipe length. Check all joints for leaks before use.
For related parts on the same platform, browse 2013–2018 Ram Cummins parts.
Choose The Ram Single-Exit Route
Use the vehicle and option table above to match your build. The collection includes other pipe sizes and layouts, so keep the exact option name with your parts list.
References
- SPEtuner: "ES04077BK illustrated installation instructions." Available from SPEtuner installation PDF.
- U.S. Environmental Protection Agency: "EPA Fact Sheet re Aftermarket Defeat Devices and Tampering." Available from U.S. Environmental Protection Agency.
- Cover photo: "MercurySable99: "2018 Ram 3500 Laramie Crew Cab 4x4 with 8' Box, front left, 12-08-2022.jpg — CC BY-SA 4.0. Layout added; vehicle photo retained. https://creativecommons.org/licenses/by-sa/4.0." Available from Cover photo: MercurySable99.
FAQ
Q: Does The Illustrated Route Replace More Than The DPF Section?
A: Yes. It starts at the turbo-connected front pipe and continues through the single over-axle pipe and tailpipe. A short DPF-only replacement retains those other ends.
Q: Can I Discard The Old Turbo Clamp When The Downpipe Comes Out?
A: Keep it. The illustrated replacement downpipe uses that stock band clamp. Inspect it and replace it with the correct part if damaged.
Q: How Do I Select The Mega Cab Short-Box Extension?
A: Use the section listed for that cab/box combination in the reference table, then check its actual supported length and joint engagement before trimming.
Q: Does A Crew Cab Long Box Use The Same Extension?
A: The illustrated single-exit manual lists a separate Crew Cab/long-box extension. Match the cab and box, then measure the installed gap.
Q: Why Do The Rear Hangers Miss The Rubber Mounts?
A: Check the kit manual’s mount-relocation picture ahead of the rear axle. Do not stretch the mounts to hide a wrong route.
Q: Can I Use The Dual-System Extension Instructions?
A: No. The splitter and dual rear branches set a different center position. Measure the single-exit layout being installed.
Lars
Diesel Performance Engineer | 15+ Years Experience
"Empower Your Beast: Run Cooler, Pull Harder, Last Longer."
