6.7 Cummins Maintenance Guide (2007.5-2026) | Alligator Performance
The 6.7L Cummins has powered Ram heavy duty trucks for nearly two decades, and the engine changed a lot along the way: new emissions equipment in 2013, hydraulic lifters and a new fuel pump in 2019, and an all-new transmission in 2025. The right oil, fuel filters and transmission service depend on your year, and so do the failure points to watch.
Alligator splits the 6.7 into five year ranges because that is where the parts change. Pick your truck below to show only its maintenance and parts. Every product card lists the fitment as it appears on the product page, and the product page has the final word.
Show maintenance for:
Quick answer: what to do first
2007.5-2009 and 2010-2012 and 2013-2018
- Check the intake grid heater mounting. A loose nut or bolt can fall into the engine.
- Change the oil and fuel filters on time with 15W-40 heavy duty oil, and drain the water separator.
- Watch the turbo: a weak exhaust brake and lazy boost are the first signs of a sticking VGT or failing actuator.
- Service the 68RFE well before the factory interval if you tow, and consider an upgraded thermal bypass valve.
- Go through the front end: track bar, ball joints, tie rods, drag link and the steering box.
- Check valve lash by 150,000 miles.
2019-2024
- Use 10W-30 oil. Ram's service bulletin says 15W-40 must not be used in 2019 and newer 6.7 engines because of the hydraulic lifters.
- On a 2019-2020, confirm the CP4 recall is done by checking your VIN at nhtsa.gov/recalls. The fix swaps in a CP3 pump.
- Check the intake grid heater mounting.
- Change both fuel filters every 15,000 miles or 12 months and drain water when the light comes on.
- Service the transmission and consider an upgraded thermal bypass valve if you tow.
- Keep the emissions equipment healthy: certified DEF, finished regenerations, less idling.
2025-2026
- Follow your owner's manual closely. The 2025 engine and ZF 8-speed are new, and many service specs differ from earlier 6.7s.
- Change fuel filters on time and drain water when the light comes on.
- Use certified DEF and let regenerations finish.
- Inspect the front end at every oil change, especially with bigger tires.
What changed between 6.7 years
| 2007.5-2009 | 2010-2012 | 2013-2018 | 2019-2024 | 2025-2026 | |
|---|---|---|---|---|---|
| High pressure fuel pump | Bosch CP3 | Bosch CP3 | Bosch CP3 | CP4.2 on 2019-2020 (recalled, replaced with CP3). CP3 on 2021-2024 | Bosch CP8 |
| Fuel filters | 1, on the engine | 1, on the engine | 2: engine and frame rail | 2: engine and frame rail | See owner's manual |
| DEF (pickups) | No | No | Yes | Yes | Yes |
| Engine oil | 15W-40 | 15W-40 | 15W-40 | 10W-30 (15W-40 not allowed) | See owner's manual |
| Valve train | Adjustable solid lifters | Adjustable solid lifters | Adjustable solid lifters | Hydraulic roller lifters | Hydraulic lifters |
| Cold start aid | Intake grid heater | Intake grid heater | Intake grid heater | Intake grid heater | Glow plugs |
| Automatic | 68RFE | 68RFE | 68RFE, or Aisin AS69RC on 3500 High Output | 68RFE, or Aisin AS69RC on 3500 High Output | ZF-built 8-speed |
| Manual | G56 6-speed | G56 6-speed | G56 6-speed | None | None |
6.7L Cummins service schedule
Ram's intervals assume normal use. Towing, idling, dusty roads and short trips count as severe service, and most working trucks belong there. Your owner's manual and the truck's oil change indicator have the final word.
2007.5-2009 and 2010-2012
| Item | Spec | Normal | Severe / towing |
|---|---|---|---|
| Engine oil and filter | About 12 quarts with filter. 15W-40 CK-4 above 0°F, 5W-40 synthetic below 0°F | 7,500 miles or 6 months | Shorter, by use |
| Fuel filter (engine) | One filter with water separator | 15,000 miles or 12 months | Same, drain water at the light |
| Air filter | Replace by restriction | 30,000 miles / 24 months | Inspect every oil change |
| Crankcase ventilation filter | On the valve cover | 67,500 miles | 67,500 miles |
| Coolant | About 22 quarts. Use the type on the reservoir label | 97,500 miles / 5 years | Test yearly |
| 68RFE automatic | ATF+4. About 5.5-6.5 quarts on a service | 120,000 miles | 60,000 miles. Many shops recommend 30,000 when towing |
| G56 manual | ATF+4, about 6 quarts (2007.5-2009) or about 5 quarts (2010-2012) | 120,000 miles | 60,000 miles |
| Valve lash | Check and adjust | 150,000 miles | 150,000 miles |
2013-2018
| Item | Spec | Normal | Severe / towing |
|---|---|---|---|
| Engine oil and filter | About 12 quarts with filter. 15W-40 CK-4 above 0°F, 5W-40 synthetic below 0°F | By the oil change indicator, never over 15,000 miles, 6 months or 500 hours | Shorter, by use |
| Fuel filters (engine and frame) | Replace both together | 15,000 miles or 12 months | Same, drain water at the light |
| Air filter | Replace by restriction | 30,000 miles / 24 months | Inspect every oil change |
| Crankcase ventilation filter | On the valve cover | 67,500 miles | 67,500 miles |
| Coolant | About 22 quarts. Use the type on the reservoir label | 150,000 miles / 10 years | Test yearly |
| 68RFE automatic | ATF+4 | 120,000 miles | 60,000 miles. Many shops recommend 30,000 when towing |
| Aisin AS69RC (3500 HO) | Mopar ASRC fluid only | 30,000 miles / 24 months | 30,000 miles |
| G56 manual | ATF+4, about 5 quarts | 120,000 miles | 60,000 miles |
| Valve lash | Check and adjust | 150,000 miles | 150,000 miles |
| DEF | Certified DEF (API / ISO 22241) | Top off as needed | Same |
2019-2024
| Item | Spec | Normal | Severe / towing |
|---|---|---|---|
| Engine oil and filter | About 12 quarts with filter. 10W-30 CK-4 above 0°F, 5W-40 synthetic below. Do not use 15W-40 | By the oil change indicator, never over 15,000 miles or 500 hours. See your owner's manual for the time limit | Shorter, by use |
| Fuel filters (engine and frame) | Replace both together | 15,000 miles or 12 months | Same, drain water at the light |
| Air filter | Replace by restriction | 30,000 miles / 24 months | Inspect every oil change |
| Crankcase ventilation filter | See your owner's manual for location | 75,000 miles | 75,000 miles |
| Coolant | Use the type on the reservoir label | 150,000 miles / 10 years | Test yearly |
| 68RFE automatic | ATF+4 | 120,000 miles | 60,000 miles. Many shops recommend 30,000 when towing |
| Aisin AS69RC (3500 HO) | Mopar ASRC fluid only | 30,000 miles / 24 months | 30,000 miles |
| Valve lash | Hydraulic lifters, no adjustment | None | None |
| DEF | Certified DEF (API / ISO 22241) | Top off as needed | Same |
2025-2026
The 2025-2026 6.7 is a substantially new engine with an oil filter on top of the engine, glow plugs instead of a grid heater, and a ZF-built 8-speed automatic. Use the fluid specs and intervals in your owner's manual. Do not assume earlier 6.7 specs carry over, especially for transmission fluid.
Capacities are approximate. Confirm specs for your exact truck in the owner's manual or diesel supplement.
Known failure points
2007.5-2009 and 2010-2012 and 2013-2018 and 2019-2024
Intake grid heater
On 2007.5-2024 engines, the intake grid heater sits in the intake path just ahead of the cylinder head. Its mounting hardware can loosen, and a nut or bolt that falls into the intake can damage the engine, often cylinder 6. A sudden knock, power loss, or codes such as P2609 or P0542 are warning signs. Inspect it during any intake work, and consider an upgraded heater assembly or a revised intake plate. 2025 and newer engines use glow plugs instead.
Recommended
BD Diesel 1041520 Killer Grid Heater Upgrade Kit
BD Killer grid heater upgrade kit for 2007-2024. Replaces the factory heater hardware that can loosen and fall into the engine.
Listed fitment: 2007-2024 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment
Fleece FPE-CUMM-IHK-0724 Performance Intake and Grid Heater Kit
Fleece intake and grid heater kit for 2007.5-2024, a complete replacement for the factory intake and heater.
Listed fitment: 2007.5-2024 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitmentTurbo vanes and actuator
The Holset variable geometry turbo's vanes can gum up and stick, and its electronic actuator can fail. A weak exhaust brake is often the first sign, followed by lazy response, low or erratic boost, high exhaust temperature and limp mode. Codes like P003A, P2262 and P0299 point here. Replacing the actuator requires a calibration (relearn). Regular use of the exhaust brake keeps the vanes moving, and proper warm-up and cool-down protect the turbo.
Industrial 4032772HX Reman Holset Turbo Actuator for HE300VG Turbos
Remanufactured Holset actuator listed for 2007.5-2012. The listing names the HE300VG turbo, so confirm the fit with our sales team. Requires a calibration after install.
Listed fitment: 2007.5-2012 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment
Industrial 5579127HX Reman Holset Turbo Actuator for HE300VG Turbos
Remanufactured Holset actuator for 2013-2018. Requires a calibration after install.
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitment
Fleece FPE-CUMM-VGT-INST-KIT Turbocharger Installation Kit
Fleece turbo installation kit with the gaskets and seals for a turbo or actuator job on 2007.5-2018.
Listed fitment: 2007.5-2018 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment
Fleece FPE-CTDT-19-Kit VGT Turbo Drain Line Kit
Fleece turbo drain line kit for 2019-2024.
Listed fitment: 2019-2024 RAM 2500/3500 6.7L Cummins
Check price and fitment2013-2018
Coolant riser pipe
On 2013-2018 trucks, a plastic coolant riser pipe is a well known failure. It causes coolant loss and overheating. A metal replacement riser is the fix.
The fix
H&S Motorsports 213004 Coolant Pipe Conversion Kit
H&S coolant pipe conversion kit for 2013-2018. Replaces the failure-prone plastic coolant pipe with a durable one.
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitment
Wehrli 100517 Upper Coolant Pipe
Wehrli upper coolant pipe for 2010-2018.
Listed fitment: 2010-2018 Ram 2500/3500 6.7L Cummins
Check price and fitment2019-2024
CP4 fuel pump recall (2019-2020)
2019-2020 trucks shipped with a Bosch CP4.2 pump. Wear inside the pump can send metal through the fuel system, and failures are usually sudden: the engine sputters, stalls and will not restart. Recall 21V-880 replaces it with a CP3 and updates the engine computer at no charge. Check your VIN at nhtsa.gov/recalls to confirm the work was done. 2021-2024 trucks came with a CP3.
Hydraulic lifters (2019 and newer)
2019 and newer engines use hydraulic roller lifters. Ram's service bulletin prohibits 15W-40 oil in these engines because it can lead to lifter deposits, noise and engine damage. Use 10W-30 CK-4, or 5W-40 synthetic below 0°F. A tick at cold start is worth investigating early.
EGR cooler
EGR coolers can clog or crack internally, especially on trucks that tow heavy. Unexplained coolant loss, white vapor from the tailpipe and overheating are the warning signs. Replace a failed cooler with an OE or upgraded replacement and pressure test the cooling system. Cleaning the EGR valve and passages is routine care on higher mileage trucks.
Fleece FPE-HAR-CUMM-EGR-VL-PT EGR Cooler Bypass Valve Pigtail
Replacement EGR cooler bypass valve pigtail for 2013-2022. A damaged connector can cause EGR faults.
Listed fitment: 2013-2022 RAM 2500/3500 6.7L Cummins
Check price and fitment
Industrial 246B06 Engine Installation Gasket Set w/o Injector Harness
Industrial Injection engine installation gasket set for 2007.5-2018, useful for EGR and intake work.
Listed fitment: 2007.5-2018 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitmentExhaust manifold
Cracked exhaust manifolds and broken studs show up as ticking under load, soot at the flange and sometimes lost boost. Replace the manifold and studs together.
BD Diesel 1045992 Exhaust Manifold Gasket Set for Stock Manifolds
BD exhaust manifold gasket set for stock manifolds, 2007.5-2018.
Listed fitment: 2007.5-2018 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment
ARP 447-1101 SS Hex Exhaust Manifold Bolt Kit
ARP stainless exhaust manifold bolt kit, 2003-2026.
Listed fitment: 2003-2026 Dodge RAM 2500/3500 5.9/6.7L Cummins No Spacers
Check price and fitment
PPE 216110200 Exhaust Manifold Stud, Nut & Washer Kit
PPE exhaust manifold stud, nut and washer kit, 1998.5-2018.
Listed fitment: 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Check price and fitmentFuel system
The lift pump on every 2007.5-2024 6.7 pickup is electric and lives in the fuel tank. Keep fuel clean and the filters fresh, and the injection pump and injectors will last. Drain water from the separator whenever the water in fuel light comes on, and do not run the tank dry. After a filter change, cycle the key several times to prime the system before starting.
2007.5-2009 and 2010-2012
2007.5-2012 trucks use a single engine-mounted fuel filter and water separator. The factory in-tank lift pumps on these years had a reputation for failing, and many owners add a frame-mounted lift pump with extra filtration.
2013-2018 and 2019-2024
2013 and newer trucks use two filters: one on the engine and one on the frame rail ahead of the tank. Change both together every 15,000 miles or 12 months.
2007.5-2009
Best for most
FASS TSD07100G Titanium Signature Series 100GPH Lift Pump
FASS frame-mounted lift pump with added filtration for 2005-2018 and 2021-2024.
Listed fitment: 2005-2018 & 2021-2024 RAM 2500/3500 5.9L/6.7L Cummins
Check price and fitment
AirDog A7SABD526 II-5G 165GPH Lift pump
AirDog lift pump with air separation, listed for 2004.5-2018.
Listed fitment: 2004.5-2018 Dodge RAM 2500/3500 Cummins
Check price and fitment
Fleece FPE-34560 170GPH PowerFlo In-Tank Lift Pump
Fleece PowerFlo in-tank lift pump for 2005-2009, a direct upgrade of the factory in-tank pump.
Listed fitment: 2005-2009 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Check price and fitment2010-2012
Best for most
FASS TSD07100G Titanium Signature Series 100GPH Lift Pump
FASS frame-mounted lift pump with added filtration.
Listed fitment: 2005-2018 & 2021-2024 RAM 2500/3500 5.9L/6.7L Cummins
Check price and fitmentAirDog A7SABD526 II-5G 165GPH Lift pump
AirDog lift pump with air separation, listed for 2004.5-2018.
Listed fitment: 2004.5-2018 Dodge RAM 2500/3500 Cummins
Check price and fitment
AFE 44-FF016 Pro-Guard D2 Fuel Filter
aFe Pro-Guard D2 fuel filter for 2010-2024.
Listed fitment: 2010-2024 RAM 2500/3500 6.7L Cummins
Check price and fitment2013-2018
Best for most
FASS TSD07100G Titanium Signature Series 100GPH Lift Pump
FASS frame-mounted lift pump with added filtration.
Listed fitment: 2005-2018 & 2021-2024 RAM 2500/3500 5.9L/6.7L Cummins
Check price and fitment
Fleece FPE-34562 170GPH PowerFlo In-tank Lift Pump
Fleece PowerFlo in-tank lift pump for 2011-2018.
Listed fitment: 2011-2018 RAM 2500/3500 6.7L Cummins
Check price and fitmentAFE 44-FF016 Pro-Guard D2 Fuel Filter
aFe Pro-Guard D2 engine fuel filter for 2010-2024.
Listed fitment: 2010-2024 RAM 2500/3500 6.7L Cummins
Check price and fitment
AFE 44-FF024 Pro GUARD HD Fuel Filter
aFe Pro Guard HD fuel filter for 2013-2018.
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitment2019-2024
FASS TSD12100G Titanium Signature Series 100GPH Fuel Lift Pump
FASS lift pump with added filtration for 2019-2020 trucks.
Listed fitment: 2019-2020 RAM 2500/3500 6.7L Cummins
Check price and fitmentFASS TSD07100G Titanium Signature Series 100GPH Lift Pump
FASS lift pump with added filtration. This version is listed for 2021-2024.
Listed fitment: 2005-2018 & 2021-2024 RAM 2500/3500 5.9L/6.7L Cummins
Check price and fitmentAFE 44-FF016 Pro-Guard D2 Fuel Filter
aFe Pro-Guard D2 engine fuel filter for 2010-2024.
Listed fitment: 2010-2024 RAM 2500/3500 6.7L Cummins
Check price and fitmentInjectors
Worn injectors cause rough idle, misfires, fuel in the oil and balance rate codes. Each 6.7 injector carries a trim (IQA) code that must be programmed into the engine computer when it is installed, so plan for that when you replace them.
Oil and crankcase ventilation
Every 6.7 holds about 12 quarts with the filter. Use a low ash CK-4 oil to protect the particulate filter. The crankcase ventilation (CCV) filter is a scheduled item that many owners forget: a plugged filter raises crankcase pressure and can push oil into the intake and out of seals.
2007.5-2009 and 2010-2012 and 2013-2018
Use 15W-40 CK-4 above 0°F, and 5W-40 full synthetic below.
2019-2024
Use 10W-30 CK-4 above 0°F, and 5W-40 full synthetic below. Ram prohibits 15W-40 in 2019 and newer 6.7 engines.
Best value
AFE 44-LF002-MB Pro-Guard D2 Replacement Oil Filter (4 Pack)
Four pack of aFe Pro-Guard D2 oil filters for 1989-2024 Cummins.
Listed fitment: 1989-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Check price and fitment
PPE 214000767 MicroPure XR® Engine Oil Filter
PPE MicroPure XR oil filter for 1989-2024 Cummins.
Listed fitment: 1989-2024 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Check price and fitment
PPE 218020100 Billet Upper Aluminum Crankcase Breather CCV Cover (Raw)
PPE billet crankcase breather (CCV) cover for 2007-2024. Replaces a cracked or leaking factory cover.
Listed fitment: 2007-2024 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitmentCooling system
Use the coolant type on your reservoir label, never mix coolant chemistries, and check the level often if you tow. Thermostats become a wear item past about 150,000 miles: stuck open, the engine runs cold; stuck closed, it overheats under load.
Mishimoto MMTS-RAM-99L Low-Temperature Thermostat
Mishimoto lower temperature thermostat, listed for 1999-2013.
Listed fitment: 1999-2013 Dodge RAM 5.9L/2500/3500 6.7L Cummins
Check price and fitment
Mishimoto MMHOSE-RAM-07HU Top Heater Hose Upgrade Kit
Mishimoto top heater hose upgrade for 2007.5-2022.
Listed fitment: 2007.5-2022 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment
Sinister SD67CCF130120 Coolant Filtration System SD-6.7CCF13-01-20
Sinister coolant filtration system for 2013-2018.
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitment
Wehrli 100251 High Output (HO) Upper Coolant Pipe
Wehrli upper coolant pipe for 2019-2026 High Output engines. A standard output version is also listed.
Listed fitment: 2019-2026 RAM 2500/3500 6.7L Cummins
Check price and fitmentEmissions equipment care
The particulate filter, EGR system and, on 2013 and newer pickups, the DEF system are factory equipment that keep the truck running at full power when they are healthy. Drive at highway speed regularly, avoid long idling, let regenerations finish, and use low ash CK-4 oil, since ash cannot be burned out of the filter.
2013-2018 and 2019-2024 and 2025-2026
Use only certified DEF (API / ISO 22241). If DEF runs out or the system faults, the truck warns you and then limits speed. Common DEF system faults involve the heater, quality sensor, doser and NOx sensors. Replace failed parts with correct OE spec components.
2007.5-2009 and 2010-2012
2007.5-2012 pickups do not use DEF. They rely on EGR, an oxidation catalyst, a NOx adsorber catalyst and a particulate filter, so keeping regenerations healthy matters even more.
Transmission
2007.5-2009 and 2010-2012 and 2013-2018 and 2019-2024
68RFE automatic
The 68RFE uses ATF+4. Ram's normal interval is 120,000 miles, but transmission shops recommend 30,000-50,000 miles, or every 20,000-30,000 if you tow heavy. Heat is its enemy: keep fluid temperature below about 200°F, and treat regular readings above 220°F as a sign cooling needs help. Common failures include torque converter clutch shudder, overdrive clutch wear and valve body wear.
The factory thermal bypass valve in the cooler circuit controls when fluid goes to the cooler. A worn or restrictive valve keeps fluid hot when you tow. Replacing it with an upgraded valve is one of the most popular 68RFE upgrades.
2010-2012
ATS 310-005-2356 Thermal Bypass Valve Up-Grade
ATS thermal bypass valve upgrade for 2010-2012 68RFE.
Listed fitment: 2010-2012 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment2013-2018
Best seller
PPE 225065000 Thermal Bypass Transmission Valve 68RFE & AS69RC
PPE thermal bypass valve for 2013-2018 68RFE and AS69RC. One of our best selling 6.7 Cummins transmission parts.
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitment
Randys Transmission JB2013 Juice Box Transmission Bypass Valve 68RFE
Randy's Juice Box bypass valve for 2013-2018 68RFE.
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitment
RevMax 68RFE-929AA ZeroStat Transmission Cooler Thermostatic Bypass
RevMax ZeroStat thermostatic bypass for 2013-2018.
Listed fitment: 2013-2018 RAM 2500/3500 6.7L Cummins
Check price and fitment2019-2024
Best seller
PPE 225065100 Transmission Fluid Thermal Bypass Valve
PPE thermal bypass valve for 2019-2024.
Listed fitment: 2019-2024 RAM 2500/3500 6.7L Cummins
Check price and fitment
ATS 310-005-2464 Thermal Bypass Valve Up-Grade
ATS thermal bypass valve upgrade for 2019-2024, with a billet filter coupler.
Listed fitment: 2019-2024 RAM 2500/3500 6.7L Cummins with Billet Filter Coupler
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Service kit
BD Diesel 1064043 68RFE Transmission Filter Service Kit
BD 68RFE transmission filter service kit for 2007.5-2024.
Listed fitment: 2007.5-2024 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment
PPE 228052100 Heavy Duty Cast Aluminum Transmission Pan with Raw Finish 68RFE
PPE heavy-duty cast aluminum 68RFE pan. More fluid, better cooling.
Listed fitment: 2007.5-2024 Dodge RAM 2500 6.7L Cummins
Check price and fitment
BD Diesel 1030373 68RFE Protect68 Gasket Plate Kit
BD Protect68 gasket plate kit for 2007.5-2018, a common valve body wear fix.
Listed fitment: 2007.5-2018 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment2013-2018 and 2019-2024
Aisin AS69RC (3500 High Output)
The Aisin uses Mopar ASRC fluid only, with fluid and filter every 30,000 miles or 24 months. Heat is the common theme in failures, and its shift solenoids cannot be replaced individually, so clean fluid and good cooling matter.
2007.5-2009 and 2010-2012 and 2013-2018
G56 six-speed manual (through 2018)
The G56 takes ATF+4. The dual mass flywheel is its best known weak point, and many owners switch to a single mass clutch kit when the clutch is replaced.
South Bend Clutch G56-OR-HD Full HD Organic Clutch Kit
South Bend heavy-duty organic clutch kit for G56 trucks.
Listed fitment: 2005-2018 Dodge RAM 2500/3500/4500 5.9L/6.7L 2500/3500 Cummins
Check price and fitment
South Bend Clutch HYDX.750 Adjustable Hydraulic Assembly
South Bend adjustable clutch hydraulic assembly for G56 trucks.
Listed fitment: 2003-2018 Dodge RAM 2500/3500 with G56 Transmission
Check price and fitment2025-2026
2025 and newer trucks use a ZF-built 8-speed automatic. Use only the fluid and interval in your owner's manual.
Steering and front end
Death wobble on solid axle Ram 4x4 trucks comes from wear across the track bar and its bushings, ball joints, tie rod ends, drag link, unit bearings and the steering box. Treat it as a system: inspect everything, replace worn parts, retorque the steering box frame bolts and align the truck. A stabilizer hides the symptom without fixing it.
2007.5-2009 and 2010-2012
Full fix
Kryptonite KRDSK03 Steering Kit
Kryptonite steering kit for 2003-2013 4WD. Heavy-duty tie rod and drag link.
Listed fitment: 2003-2013 RAM 2500/3500 4WD
Check price and fitment
Apex KIT101 Super HD Ball Joint Kit (2) BJ130, (2) BJ131
Apex super heavy-duty ball joint kit for 2003-2013 4WD.
Listed fitment: 2003-2013 Dodge RAM 2500/3500 4WD
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Synergy 4803-42 Track Bar Dual Durometer Bushing In Forged Housing 16MM Bolt 1.60" inch Wide
Synergy dual durometer track bar bushing for 2008-2013.
Listed fitment: 2008-2013 Dodge RAM 2500/3500
Check price and fitment
BD Diesel 1032003 Steering Box Stabilizer Bar
BD steering box stabilizer bar for 2003-2018.
Listed fitment: 2003-2018 Dodge RAM 2500/3500
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Bilstein 33-170794 B8 5100 Steering Damper Stabilizer - Eye-To-Eye Mount - (Single)
Bilstein 5100 steering damper for 2007-2012. Install it last.
Listed fitment: 2007-2012 Dodge RAM 2500/3500 6.7L Cummins
Check price and fitment2013-2018 and 2019-2024
Full fix 2014+
Apex KIT385-STL Heavy Duty ProLock DOM Steel Tie Rod & Drag Link Assembly
Apex heavy-duty steel tie rod and drag link assembly for 2014-2024. 2013 trucks use the earlier linkage.
Listed fitment: 2014-2024 RAM 2500/3500 6.7L Cummins
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Kryptonite 1420BJPACK Upper and Lower Ball Joint Package
Kryptonite upper and lower ball joint package for 2013-2024 4WD.
Listed fitment: 2013-2024 RAM 2500/3500 4WD
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Rough Country 31004 Front Forged Adjustable Track Bar - for 0-5" Lift
Rough Country forged adjustable front track bar for 2014-2026.
Listed fitment: 2014-2026 RAM 2500/3500 6.7L Cummins
Check price and fitmentBD Diesel 1032003 Steering Box Stabilizer Bar
BD steering box stabilizer bar for 2003-2018.
Listed fitment: 2003-2018 Dodge RAM 2500/3500
Check price and fitment
Bilstein 53-264817 B8 5100 Dual Steering Damper Kit - (Pair)
Bilstein 5100 dual steering damper kit for 2013-2026 4WD.
Listed fitment: 2013-2026 RAM 2500/3500 4WD
Check price and fitmentMaintenance checklist
2007.5-2009 and 2010-2012 and 2013-2018
| Step | Job | Parts |
|---|---|---|
| 1 | Inspect or upgrade the grid heater | BD grid heater kit |
| 2 | Oil, fuel filter(s), drain water | aFe oil filter 4-pack |
| 3 | Exhaust brake and boost check for VGT problems | turbo install kit if the actuator is replaced |
| 4 | 68RFE fluid and filter, thermal bypass valve | BD filter service kit |
| 5 | Front end inspection and repair | steering box brace |
| 6 | Valve lash by 150,000 miles | Engine cold |
2019-2024
| Step | Job | Parts |
|---|---|---|
| 1 | Confirm the CP4 recall on 2019-2020 trucks | Check your VIN at nhtsa.gov/recalls |
| 2 | 10W-30 oil and filter | aFe oil filter 4-pack |
| 3 | Both fuel filters, drain water | aFe engine fuel filter |
| 4 | Inspect or upgrade the grid heater | BD grid heater kit |
| 5 | Transmission service and thermal bypass valve | PPE thermal bypass valve |
| 6 | Front end inspection | ball joints |
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 works with 6.7 Cummins owners every day. Tell us your year, mileage and how you use the truck, and we will help you put together the right maintenance parts list and confirm fitment before you order.
Call 208-719-7400Send us a messageFrequently asked questions
What oil should I use in my 6.7 Cummins?
2007.5-2018 trucks use 15W-40 CK-4 above 0°F. 2019 and newer trucks use 10W-30 CK-4, and Ram's service bulletin says 15W-40 must not be used in 2019 and newer engines. Below 0°F, 2007.5-2024 trucks use a 5W-40 full synthetic. For 2025-2026, follow your owner's manual.
How much oil does a 6.7 Cummins hold?
About 12 quarts with the filter.
How often should I change the oil on a 6.7 Cummins?
2007.5-2012 trucks: every 7,500 miles or 6 months. 2013-2024: follow the oil change indicator, never more than 15,000 miles or 500 hours, and check your owner's manual for the time limit. 2025-2026: follow your owner's manual. Many owners who tow use a shorter interval.
How often should I change the fuel filters?
Every 15,000 miles or 12 months. 2013 and newer trucks have two filters, one on the engine and one on the frame, and both should be changed together. Drain water whenever the water in fuel light comes on.
Does my 6.7 Cummins have a CP4 pump?
Only 2019-2020 trucks shipped with a CP4, and recall 21V-880 replaces it with a CP3. Check your VIN at nhtsa.gov/recalls. 2007.5-2018 and 2021-2024 trucks use a CP3, and 2025 and newer use a new Bosch CP8.
What is the 6.7 Cummins grid heater problem?
On 2007.5-2024 engines, the intake grid heater's mounting hardware can loosen, and a part that falls into the intake can damage the engine. Inspect it during intake work and consider an upgraded heater kit. 2025 and newer engines use glow plugs.
Does my truck use DEF?
2013 and newer Ram 2500 and 3500 pickups use DEF. 2007.5-2012 pickups do not.
Which transmission do I have?
The 68RFE is in standard output trucks from 2007.5 to 2024. The Aisin AS69RC is in 3500 High Output trucks from 2013 to 2024. The G56 manual was offered through 2018. 2025 and newer trucks use a ZF-built 8-speed.
What does a 68RFE thermal bypass valve upgrade do?
The factory valve controls when transmission fluid goes to the cooler. A worn or restrictive valve keeps fluid hot when towing. An upgraded valve sends fluid to the cooler sooner and helps keep temperatures down.
Do I need to adjust valve lash on a 6.7 Cummins?
On 2007.5-2018 engines, check and adjust valve lash at 150,000 miles. 2019 and newer engines use hydraulic lifters that do not need adjustment.
How do I fix death wobble on my Ram?
Treat the front end as a system: inspect the track bar and bushings, ball joints, tie rod ends, drag link, unit bearings and steering box, replace worn parts, retorque the steering box frame bolts and align the truck.
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