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2021 Ram Ram 5500 Chassis Cab
Reliability tier: verified - see /disclosure/
Engine: 6.7L ISB (2019+ generation) (Cummins, 6.7L)
Applicable failure modes (9)
- CP4 high-pressure fuel pump failure and fuel system contamination (2019-2020 6.7)
- DEF quality / freezing inducements (2019+ 6.7)
- DPF/SCR aftertreatment problems (2019+ 6.7)
- EGR cooler failure (2019+ 6.7)
- Grid heater bolt and relay failures (2019+ 6.7)
- Head gasket failure on tuned 2019+ 6.7
- Common-rail injector wear (2019+ 6.7)
- In-tank lift pump failures (2019+ 6.7)
- VGT turbo electronic actuator failure (HE300VG family)
Applicable parts (17)
- 6.7 Cummins 24-Valve Head Stud Kit, Custom Age 625+ ('98-present application) (ARP)
- Banks Power Billet Heater Kit, 1500W (2019-2024 Ram 6.7L Cummins; requires Monster-Ram installed)
- Banks Power Billet Heater Kit, 750W (2019-2024 Ram 6.7L Cummins; requires Monster-Ram installed)
- Banks Power Dual Heater Upgrade Kit (2019-2024 Ram 6.7L Cummins; requires Triple-Heat-capable Monster-Ram)
- Banks Power Monster-Ram Intake & Killer Grid Heater Upgrade, Chassis Cab (2019-2024 Ram 3500/4500/5500, 6.7L Cummins)
- 6.7 Cummins 2019-2024 Exhaust Manifold Gasket Set, stock mount (BD Diesel)
- DEF refill - fresh API-certified fluid (service item, any 2019+ Ram 6.7L)
- 6.7L Cummins DEF Pump Module, 2019+ (OEM Mopar)
- 6.7L Cummins EGR Cooler, 2019+ (OEM Mopar)
- 6.7L Cummins EGR Valve, 2019+ (OEM Mopar)
- Killer Grid Heater Upgrade Kit (BD Diesel 1041520, 2007.5-2024 Ram 6.7L Cummins)
- 6.7L Cummins Top End Gasket Kit 2019-2024 (Hamilton Cams 07-G-6.719+TE)
- 6.7L Cummins Injectors, 2019+ generation (S&S new / Alliant reman)
- 6.7L Cummins Injector Seal Kit, O-ring & Copper Gasket (Exergy E05 20901, 2019-2024)
- 6.7L Cummins SCR Catalyst Converter, 2019+ (OEM Mopar)
- 6.7L Cummins VGT Turbocharger, 2019+ (OEM Mopar)
- 6.7L Cummins Water Pump, 2019+ (OEM Mopar)
Platform recipes (3)
- DEF system repair for 2019+ Ram HD (mode fm-c67hd-def-quality): contaminated/crystallized DEF, failed urea pump modules and doser faults
- Emissions-side repair for the 2019+ Ram HD 6.7 (modes fm-c67hd-egr-cooler / fm-c67hd-dpf-scr-system): soot-clogged EGR valve, coolant-loss EGR cooler, and the aftertreatment pair - the DPF assembly (cab-split PNs) and the SCR converter bolted behind it
- HE300VG VGT turbo repair for 2019+ Ram HD (mode fm-c67hd-vgt-actuator): the vaned nozzle ring sticks from soot/carbon and the actuator loses position control - limp modes, boost codes, whine
Recalls that include this truck (3)
- 23V-060 (February 9, 2023) - ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS: Chrysler (FCA US, LLC) is recalling certain 2021-2023 Ram 2500, 3500, 3500 Cab Chassis, and 4500, 5500 Cab Chassis vehicles equipped with a Cummins 6.7L Turbo Diesel engine. An electrical short may occur in the heater...
- 21V-798 (October 14, 2021) - ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS: Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 3500, 2500 pickup trucks, and Ram 3500, 4500, and 5500 cab chassis vehicles equipped with Cummins 6.7L Turbo Diesel engines. An electrical short in the relay may...
- 21V-163 (March 11, 2021) - ELECTRICAL SYSTEM: Chrysler (FCA US, LLC) is recalling certain 2021 Ram 2500, 3500, and 3500, 4500, and 5500 Cab Chassis vehicles equipped with a Cummins 6.7L Turbo Diesel engine. An electrical short may occur in the Solid State Intake...
Matched by the model and model year NHTSA lists for each recall - a recall often covers only part of a year's production, so read its text for the build dates and versions it names. Whether a recall is still open on your VIN is not known here; check nhtsa.gov/recalls. All recalls, investigations and bulletins for this engine: /recalls/cummins-6_7-hd-2019/
Reference for this truck
from the owner's manual
4 failures priced in parts
every OEM number we verified
the 8th character of the VIN
fuel flow by horsepower
2 NHTSA investigations
what to inspect, in order
side by side, documented risk, no verdict