6.7 Cummins Power Guide: Stage 1 and 2 Upgrades (2007.5-2026) | Alligator Performance
The 6.7L Cummins makes strong power from the factory, and with the right parts it makes a lot more without giving up the reliability you bought it for. Because every 6.7 carries a particulate filter and EGR, and 2013 and newer trucks add DEF, the right parts are the ones that keep that equipment working. This guide lays out Stage 1 and Stage 2 for each year range, each with a towing build and a max power build.
Pick your truck below to see only the parts that fit it. Every card shows the fitment as it appears on the product page, and parts listed with a CARB Executive Order carry a green badge with the EO number.
Show parts for:
Quick answer: the best power upgrades for your truck
2007.5-2009
- Stage 1 towing: Edge Evolution CTS3 plus an aFe intake.
- Stage 2 towing: a Fleece lift pump, a 68RFE converter and valve body.
- Stage 2 max power: add the Fleece Cheetah turbo and head studs.
2010-2012
- Stage 1 towing: Edge Evolution CTS3 plus an aFe intake.
- Stage 2 towing: a Fleece lift pump, a 68RFE converter and valve body.
- Stage 2 max power: add the Fleece Cheetah turbo and head studs.
2013-2018
- Stage 1 towing (2015-2018): the SPADE 50 State tune plus an aFe intake.
- 2013-2014: intake, DPF-back exhaust and a monitor.
- Stage 2 max power: Industrial CDT injectors and a Fleece Cheetah turbo.
2019-2024
- Stage 1 towing (2019-2020): the SPADE 50 State tune and a monitor.
- Stage 2 towing (2019-2020): the S&S CP3 conversion.
- Stage 2 max power: a Fleece Cheetah turbo.
2025-2026
- No tuning with a CARB EO exists yet for 2025-2026.
- For now: a DPF-back exhaust.
Before you add power
Start with a healthy truck. Look for exhaust manifold leaks, a sticky turbo actuator, a clogged particulate filter or a stuck EGR valve, and fix them first. Added power only makes those problems worse. Make sure the truck completes its regenerations and that the DEF system has no faults.
On 2019-2020 trucks, check that the CP4 fuel pump recall (21V-880) has been done before adding any power. The recall installs a revised pump and updates the engine computer; ask our sales team whether the CP3 conversion still applies to your truck.
Tuning and some performance parts can affect your factory powertrain warranty. Check before you install.
2007.5-2009
Start with a healthy truck: work through the 2007.5-2009 maintenance guide first.
2010-2012
Start with a healthy truck: work through the 2010-2012 maintenance guide first.
2013-2018
Start with a healthy truck: work through the 2013-2018 maintenance guide first.
2019-2024
Start with a healthy truck: work through the 2019-2024 maintenance guide first.
2025-2026
Start with a healthy truck: work through the 2025-2026 maintenance guide first.
Stock power and where the limits are
Every number below is a factory rating at the crank or a typical figure at the wheels, as noted. "Reliable towing target" is where we suggest a truck that tows stops, so the engine, transmission and cooling system all live a long time.
| Years | Stock rating | Transmissions | Reliable towing target | First limit you hit |
|---|---|---|---|---|
| 2007.5-2009 | 350 hp, 650 lb-ft (68RFE); 610 lb-ft with the G56 manual | 68RFE automatic, G56 6-speed manual | Factory power plus about 60-100 hp with the parts in this guide | The 68RFE, and heat in the particulate filter |
| 2010-2012 | 350 hp; 650 lb-ft (2010 to early 2011 68RFE), 800 lb-ft (February 2011-2012 68RFE), 610 lb-ft (G56) | 68RFE automatic, G56 6-speed manual | Factory power plus about 60-100 hp with the parts in this guide | The 68RFE, and heat in the particulate filter |
| 2013-2018 | 370 hp, 800 lb-ft (68RFE); up to 385 hp, 930 lb-ft (Aisin, 3500 High Output); 350 hp, 660 lb-ft (G56) | 68RFE, Aisin AS69RC (3500 High Output), G56 manual | Factory power plus about 60-100 hp with the parts in this guide | The 68RFE; the Aisin has much more margin |
| 2019-2024 | 370 hp, 800-850 lb-ft (68RFE); 400-420 hp, 1,000-1,075 lb-ft (Aisin, 3500 High Output) | 68RFE, Aisin AS69RC (3500 High Output) | Factory power plus about 60-100 hp on 2019-2020; factory power on 2021-2024 until a legal tuner exists | The 68RFE, and the CP4 pump on 2019-2020 |
| 2025-2026 | 430 hp, 1,075 lb-ft | 8-speed automatic | Stock power for now | No tuning covered by a CARB EO yet |
Stage 1: bolt-ons and tuning
Stage 1 is the bolt-on step: tuning (where a legal option exists), better airflow and the gauges to watch what the engine is doing. The towing build is what we recommend for most trucks. The max power build adds the parts that let the same truck make more power without giving up reliability.
2007.5-2009
The Edge Evolution CTS3 is covered by CARB EO D-802-13 for 2007-2012 6.7L trucks. It tunes the engine with Edge's preloaded levels and doubles as a monitor for exhaust temperature, particulate filter status and transmission temperature. Pair it with an intake listed with an EO.
Stage 1 towing build
Best for most trucks that tow.
Towing pick
Edge 85401-301 Evolution CTS3
Edge Evolution CTS3 programmer and 5 inch monitor. Run a towing level when you are hooked up.
Listed with CARB EO D-802-13
Listed fitment: 2003-2012 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Check price and fitment
aFe Power 51-31342-1 Magnum FORCE Stage-2 Cold Air Intake System with Pro DRY S Filter
aFe Magnum FORCE Stage 2 intake with a dry filter.
Listed with CARB EO D-550-26
Listed fitment: 2007.5-2012 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitmentStage 1 max power build
Adds to the towing build for more power.
Diamond Eye K5252A 5" inch Aluminized DPF Back No Tip Exhaust
Diamond Eye 5 inch DPF-back exhaust. Bolts on behind the particulate filter.
Listed fitment: 2007.5-2012 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment
AutoMeter 8544 Factory Match 2-1/16 inch 0-1600F Pyrometer Kit
AutoMeter pyrometer for a dedicated exhaust temperature gauge.
Listed fitment: 2003-2009 Dodge RAM 2500/3500
Check price and fitment2010-2012
The Edge Evolution CTS3 is covered by CARB EO D-802-13 through 2012, so 2010-2012 trucks get the same proven Stage 1: the CTS3 for tuning and monitoring, and an intake listed with an EO.
Stage 1 towing build
Best for most trucks that tow.
Towing pick
Edge 85401-301 Evolution CTS3
Edge Evolution CTS3 programmer and 5 inch monitor.
Listed with CARB EO D-802-13
Listed fitment: 2003-2012 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Check price and fitment
aFe Power 51-72004 Momentum HD Cold Air Intake System with Pro DRY S Filter
aFe Momentum HD intake with a dry filter. Ram 3500 owners: confirm EO coverage on the product page.
Listed with CARB EO D-550-26
Listed fitment: 2010-2012 RAM 2500/3500 6.7L Cummins
Check price and fitmentStage 1 max power build
Adds to the towing build for more power.
aFe Power 50-72004 Momentum HD Cold Air Intake System with Pro 10R Filter
The same aFe intake with an oiled Pro 10R filter for a little more airflow.
Listed with CARB EO D-550-26
Listed fitment: 2010-2012 RAM 2500/3500 6.7L Cummins
Check price and fitmentDiamond Eye K5252A 5" inch Aluminized DPF Back No Tip Exhaust
Diamond Eye 5 inch DPF-back exhaust.
Listed fitment: 2007.5-2012 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment2013-2018
For 2015-2018 trucks, the Calibrated Power SPADE "50 State" tune is covered by CARB EO D-845-1, with Heavy Tow, Light Tow, Street and Sport levels you switch on the fly. We do not have a tuner covered by an EO for 2013-2014 trucks, so Stage 1 on those years is the intake, exhaust and monitor.
Stage 1 towing build
Best for most trucks that tow.
2015-2017
DuramaxTuner DM1HI2181011000 Spade Tuner 50 State Switch On The Fly Tune with EFI Live Spade
Calibrated Power SPADE 50 State tune with EFI Live hardware for 2015-2017. Use the tow levels when hooked up. The EO lists Calibrated Power's DT-series tune part numbers; confirm with our sales team before ordering for California.
Listed with CARB EO D-845-1
Listed fitment: 2015-2017 RAM 2500/3500 6.7L Cummins
Check price and fitment
2018
DuramaxTuner DM1KJ2181011000 Spade Tuner 50 State Switch On The Fly Tune with EFI Live Spade
The same 50 State SPADE tune for 2018 trucks.
Listed with CARB EO D-845-1
Listed fitment: 2018 RAM 2500/3500 6.7L Cummins
Check price and fitment
aFe Power 50-72005 Momentum HD Cold Air Intake System with Pro 10R Filter
aFe Momentum HD intake with an oiled Pro 10R filter. The EO covers 2013-2017.
Listed with CARB EO D-550-26
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitment
Edge 84130-3 Products Insight CTS3 5 Touch Screen Digital Gauge Monitor
Edge Insight CTS3 monitor. Watch exhaust temperature, filter status and transmission temperature.
Listed fitment: Universal
Check price and fitmentStage 1 max power build
Adds to the towing build for more power.
MagnaFlow 17070 Dual Stainless 4 inch DPF-Back Exhaust
MagnaFlow dual 4 inch stainless DPF-back exhaust.
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitment
aFe Power 51-72005 Momentum HD Cold Air Intake System with Pro DRY S Filter
aFe Momentum HD intake with a dry filter, if you would rather not oil a filter. The EO covers 2013-2017.
Listed with CARB EO D-550-26
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitment2019-2024
For 2019-2020 trucks, the Calibrated Power SPADE "50 State" tune is covered by CARB EO D-845-1. We do not have a tuner covered by an EO for 2021-2024 yet, so Stage 1 on those years is the exhaust and a monitor.
Stage 1 towing build
Best for most trucks that tow.
2019-2020
DuramaxTuner DM1LL2181011000 Spade Tuner 50 State Switch On The Fly Tune with EFI Live Spade
Calibrated Power SPADE 50 State tune with EFI Live hardware for 2019-2020.
Listed with CARB EO D-845-1
Listed fitment: 2019-2020 RAM 2500/3500 6.7L Cummins
Check price and fitmentEdge 84130-3 Products Insight CTS3 5 Touch Screen Digital Gauge Monitor
Edge Insight CTS3 monitor for exhaust temperature, filter status and transmission temperature.
Listed fitment: Universal
Check price and fitmentStage 1 max power build
Adds to the towing build for more power.
MagnaFlow 17912 5 inch DPF Back Stainless Single Exit Exhaust System with Tip
MagnaFlow 5 inch stainless DPF-back exhaust.
Listed fitment: 2019-2024 RAM 2500/3500 6.7L Cummins
Check price and fitment
aFe Power 49-02075-B ATLAS 5 IN Aluminized Steel DPF-Back Exhaust System
aFe ATLAS 5 inch aluminized DPF-back exhaust, a value alternative.
Listed fitment: 2019-2026 RAM 2500/3500 6.7L Cummins
Check price and fitment2025-2026
The 2025-2026 6.7 is substantially new, and no tuner or module for it carries a CARB EO yet. Until one does, the only Stage 1 parts we recommend are a DPF-back exhaust and a monitor.
Stage 1 towing build
Best for most trucks that tow.
aFe Power 49-02075-B ATLAS 5 IN Aluminized Steel DPF-Back Exhaust System
aFe ATLAS 5 inch aluminized DPF-back exhaust.
Listed fitment: 2019-2026 RAM 2500/3500 6.7L Cummins
Check price and fitmentStage 2: fuel, turbo and the parts that support them
Stage 2 adds fuel supply and airflow, and the supporting parts that keep the extra power reliable. On most trucks the transmission has to be part of Stage 2, so it is included here.
2007.5-2009
The factory in-tank lift pump on these trucks has a poor reputation. Stage 2 adds a stronger pump and the transmission parts to hold the power. For max power, the Fleece Cheetah is a drop-in turbo listed with a CARB EO for 2007.5-2012.
Stage 2 towing build
Fuel supply and drivetrain first.
Towing pick
Fleece FPE-34560 170GPH PowerFlo In-Tank Lift Pump
Fleece PowerFlo in-tank lift pump for 2005-2009 trucks.
Listed with CARB EO D-834-10
Listed fitment: 2005-2009 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Check price and fitment
ATS 302-952-2326 68RFE Five Star Torque Converter
ATS Five Star torque converter for the 68RFE.
Listed fitment: 2007.5-2024 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment
ATS 303-900-2326 68RFE Performance Valve Body
ATS performance valve body for 2007.5-2011 68RFE trucks.
Listed fitment: 2007.5-2011 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitmentStage 2 max power build
Adds to the towing build for more power.
Fleece FPE-351-0712 63mm Cheetah Drop In Replacement Turbocharger
Fleece 63mm Cheetah drop-in turbo. Quicker spool and lower exhaust temperature than the factory turbo. The EO excludes some chassis cab engine families; check your emissions label.
Listed with CARB EO D-834-6
Listed fitment: 2007.5-2012 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment
ARP 247-4202 Pro Series Head Stud Kit
ARP head studs. Recommended once a 6.7 is tuned and towing.
Listed fitment: 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Check price and fitment2010-2012
Stage 2 adds a lift pump and the 68RFE upgrades. The Fleece in-tank pump below covers 2011 and newer; for 2010 trucks, ask our sales team for the right pump, since neither Fleece EO covers 2010. The Fleece Cheetah turbo is listed with a CARB EO through 2012.
Stage 2 towing build
Fuel supply and drivetrain first.
Towing pick
Fleece FPE-34562 170GPH PowerFlo In-tank Lift Pump
Fleece PowerFlo in-tank lift pump for 2011-2018 trucks.
Listed with CARB EO D-834-12
Listed fitment: 2011-2018 RAM 2500/3500 6.7L Cummins
Check price and fitmentATS 302-952-2326 68RFE Five Star Torque Converter
ATS Five Star torque converter for the 68RFE.
Listed fitment: 2007.5-2024 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitmentATS 303-900-2326 68RFE Performance Valve Body
ATS performance valve body for 2010-2011 68RFE trucks.
Listed fitment: 2007.5-2011 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment
ATS 303-900-2380 68RFE Performance Valve Body
ATS performance valve body for 2012 68RFE trucks.
Listed fitment: 2012-2018 RAM 2500/3500 6.7L Cummins
Check price and fitmentStage 2 max power build
Adds to the towing build for more power.
Fleece FPE-351-0712 63mm Cheetah Drop In Replacement Turbocharger
Fleece 63mm Cheetah drop-in turbo for 2007.5-2012.
Listed with CARB EO D-834-6
Listed fitment: 2007.5-2012 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitmentARP 247-4202 Pro Series Head Stud Kit
ARP head studs for a tuned truck that tows.
Listed fitment: 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Check price and fitment2013-2018
This is the one 6.7 range with injector upgrades covered by an EO: Industrial Injection's Clean Diesel Technology injectors flow about 10 percent more than stock under CARB EO D-711-1. Add a lift pump, then a turbo listed with an EO for max power.
Stage 2 towing build
Fuel supply and drivetrain first.
Towing pick
Fleece FPE-34562 170GPH PowerFlo In-tank Lift Pump
Fleece PowerFlo in-tank lift pump for 2011-2018.
Listed with CARB EO D-834-12
Listed fitment: 2011-2018 RAM 2500/3500 6.7L Cummins
Check price and fitmentATS 302-952-2326 68RFE Five Star Torque Converter
ATS Five Star torque converter for the 68RFE.
Listed fitment: 2007.5-2024 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitmentATS 303-900-2380 68RFE Performance Valve Body
ATS performance valve body for 2012 and newer 68RFE trucks.
Listed fitment: 2012-2018 RAM 2500/3500 6.7L Cummins
Check price and fitmentStage 2 max power build
Adds to the towing build for more power.
Industrial 21D901S CDT Injector Set
Industrial Injection CDT injector set, about 10 percent over stock.
Listed with CARB EO D-711-1
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitment
Fleece FPE-351-1317 63mm Billet VGT Cheetah Turbocharger
Fleece 63mm billet Cheetah turbo for 2013-2018.
Listed with CARB EO D-834-2
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitmentARP 247-4202 Pro Series Head Stud Kit
ARP head studs for a tuned truck that tows.
Listed fitment: 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Check price and fitment2019-2024
On 2019-2020 trucks, the S&S CP3 conversion replaces the failure-prone CP4 pump and is covered by CARB EO D-756-5. Check that your truck's CP4 recall has been done first. For max power, the Fleece Cheetah is a drop-in turbo listed with a CARB EO.
Stage 2 towing build
Fuel supply and drivetrain first.
Towing pick
S&S Diesel RAM-CP3-NOTUNE No Tune RAM CP3 Conversion Kit
S&S CP3 conversion that needs no tuning, for 2019-2020.
Listed with CARB EO D-756-5
Listed fitment: 2019-2020 RAM 2500/3500 6.7L Cummins
Check price and fitment
FASS TSD12100G Titanium Signature Series 100GPH Fuel Lift Pump
FASS 100 gph lift pump with added filtration for 2019 and newer.
No CARB EO: not legal for sale or use in California
Listed fitment: 2019-2020 RAM 2500/3500 6.7L Cummins
Check price and fitmentATS 302-952-2326 68RFE Five Star Torque Converter
ATS Five Star torque converter for the 68RFE.
Listed fitment: 2007.5-2024 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitmentStage 2 max power build
Adds to the towing build for more power.
Fleece FPE-351-1920 Cheetah 63MM FMW Turbocharger 50 States Legal
Fleece 63mm Cheetah drop-in turbo.
Listed with CARB EO D-834-27
Listed fitment: 2019-2022 RAM 2500/3500 6.7L Cummins
Check price and fitment2025-2026
There are no Stage 2 fuel or turbo upgrades covered by a CARB EO for 2025-2026 yet. We will add them here when they are available. Our sales team can tell you what is coming.
Transmission and clutch
2007.5-2009
The 68RFE handles Stage 1 with a converter and the transmission settings included in an EO-covered tuner. Past about 450 rwhp, or for steady heavy towing, plan on a built transmission. G56 trucks need a stronger clutch at Stage 1.
South Bend Clutch G56-OR-HD Full HD Organic Clutch Kit
South Bend heavy-duty organic clutch for G56 trucks.
Listed fitment: 2005-2018 Dodge RAM 2500/3500/4500 5.9L/6.7L 2500/3500 Cummins
Check price and fitment2010-2012
Same as 2007.5-2009: tuning and a converter at Stage 1, a built 68RFE for heavy towing at Stage 2. The 2010-2011 trucks take the earlier valve body; 2012 trucks take the later one. G56 trucks need a stronger clutch.
ATS 303-900-2326 68RFE Performance Valve Body
ATS performance valve body for 2007.5-2011 trucks.
Listed fitment: 2007.5-2011 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitmentSouth Bend Clutch G56-OR-HD Full HD Organic Clutch Kit
South Bend heavy-duty organic clutch for G56 trucks.
Listed fitment: 2005-2018 Dodge RAM 2500/3500/4500 5.9L/6.7L 2500/3500 Cummins
Check price and fitment2013-2018
The 68RFE needs a converter and valve body at Stage 1 on a truck that tows, and a build at Stage 2. The Aisin behind 3500 High Output trucks has far more margin and usually needs only a converter at Stage 2. 2013-2018 is the last range with the G56 manual; it needs a stronger clutch at Stage 1.
ATS 302-950-2392 AS69RC Five Star Torque Converter
ATS Five Star torque converter for the Aisin AS69RC.
Listed fitment: 2013-2026 RAM 2500/3500 6.7L Cummins
Check price and fitmentSouth Bend Clutch G56-OR-HD Full HD Organic Clutch Kit
South Bend heavy-duty organic clutch for G56 trucks.
Listed fitment: 2005-2018 Dodge RAM 2500/3500/4500 5.9L/6.7L 2500/3500 Cummins
Check price and fitment2019-2024
The 68RFE needs a converter and valve body at Stage 1 on a truck that tows. The Aisin has more margin and usually needs only a converter at Stage 2. No manual transmission was offered in these years.
ATS 303-900-2464 68RFE Performance Valve Body
ATS performance valve body for 2019 and newer 68RFE trucks.
Listed fitment: 2019-2024 RAM 2500/3500 6.7L Cummins
Check price and fitmentATS 302-950-2392 AS69RC Five Star Torque Converter
ATS Five Star torque converter for the Aisin AS69RC.
Listed fitment: 2013-2026 RAM 2500/3500 6.7L Cummins
Check price and fitment2025-2026
2025 and newer trucks use an 8-speed automatic. Follow your owner's manual for fluid and service, and ask our sales team before buying transmission parts, since some listings still show older transmissions.
Safe towing temperatures
Added power means added heat. These are the numbers to watch on your gauges while towing. They are sustained readings, not short spikes on a hill.
| Reading | Normal while towing | When to act |
|---|---|---|
| EGT (probe before the turbo) | Under about 1,200°F sustained | Back off or downshift if it stays above 1,250°F. On trucks with a particulate filter, sustained heat above that risks the filter. |
| EGT (probe after the turbo) | Reads about 200-300°F lower than a pre-turbo probe | Know which probe your gauge uses before you set an alarm. |
| Transmission fluid | 170-200°F | Act at 210-225°F sustained: slow down, downshift, add cooling. |
| Coolant | 195-220°F | Act if it stays over 225°F. |
| Engine oil | 210-240°F | Act at 250°F or more, sustained. |
Emissions and legal fitment
Every part in this guide keeps your truck's factory emissions equipment in place and working. Where a part is listed with a California Air Resources Board Executive Order (CARB EO), the card says so. That EO exempts the part from California's tampering law (Vehicle Code 27156) for the vehicles it lists. An EO covers only the exact part numbers, years and engines it lists, and an EO for a tuner covers only the maker's preloaded tunes: a custom tune is not covered. Each EO covers its part by itself; CARB has not evaluated combinations of tuned parts. Parts marked "No CARB EO" are not legal for sale or use in California on pollution-controlled vehicles. Exhaust that bolts on behind the catalytic converter or particulate filter generally does not need an EO, but local noise rules still apply.
2007.5-2009
2007.5-2009 trucks have EGR, an oxidation catalyst, a NOx adsorber catalyst and a particulate filter. Keep all of it. The DPF-back exhaust bolts on behind the filter. The Edge CTS3 is covered by CARB EO D-802-13 only with its preloaded tunes.
2010-2012
These trucks have EGR, an oxidation catalyst, a NOx adsorber catalyst and a particulate filter. Keep all of it. The Edge CTS3 is covered by CARB EO D-802-13 through 2012 with its preloaded tunes.
2013-2018
2013-2018 trucks have EGR, an oxidation catalyst, a particulate filter and SCR with DEF. Keep all of it and use certified DEF. The SPADE tune is covered by CARB EO D-845-1 for 2015-2018 with its preloaded levels only.
2019-2024
These trucks have EGR, an oxidation catalyst, a particulate filter and SCR with DEF. Keep all of it. The SPADE tune is covered by CARB EO D-845-1 for 2019-2020 with its preloaded levels; the S&S CP3 conversion is covered by EO D-756-5 for 2019-2020.
2025-2026
2025-2026 trucks have a close-coupled catalyst, oxidation catalyst, particulate filter, SCR with DEF and EGR. Keep all of it.
Shop parts for your truck
2007.5-2009
2010-2012
2013-2018
2019-2024
2025-2026
Not sure which parts your truck needs?
Alligator's sales team helps 6.7 Cummins owners plan power upgrades every day. Tell us your year, transmission, what you tow and how far you want to go, and we will build a parts list that fits and flag anything not covered by a CARB EO.
Call 208-719-7400Send us a messageFrequently asked questions
What is the best first power upgrade for a 6.7 Cummins that tows?
On 2007.5-2012 trucks, the Edge Evolution CTS3: it is covered by CARB EO D-802-13 and includes a monitor. On 2015-2020 trucks, the Calibrated Power SPADE 50 State tune, covered by EO D-845-1. On years with no legal tuner, start with a DPF-back exhaust and a monitor.
How much power can a 6.7 Cummins tow with reliably?
With the parts in this guide, plan on factory power plus about 60-100 hp, with the transmission ready for it. The 3500 High Output trucks with the Aisin have the most transmission margin.
Do I need to upgrade the 68RFE?
For towing at Stage 1 power, a torque converter and valve body are worth it. At Stage 2 or for steady heavy towing, plan on a built transmission.
Is there a legal tuner for 2021-2024 or 2025-2026 Ram 6.7 trucks?
Not that we carry yet. When a tuner for those years is covered by a CARB EO, we will add it to this guide.
Are DPF-back exhausts legal?
A DPF-back exhaust bolts on behind the particulate filter and does not change any emissions equipment, so it generally does not need a CARB EO. Local noise rules still apply.
Do I need head studs on a tuned 6.7?
They are recommended once a 6.7 is tuned and towing, because the long stroke raises cylinder pressure. They are part of our Stage 2 max power builds.
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