Ram3500 Cab20156.7L Diesel/ram/3500-cab/2015/6-7l-diesel/
DD platform

2015 Ram 3500 Cab — 6.7L Diesel

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2015 3500 Cab 6.7L Diesel.

Engine 6.7L Diesel

The 2015 Ram 3500 Cab, built on the sturdy DD platform, is powered by a robust 6.7‑liter diesel engine that requires a 12.0‑quart oil capacity and runs on 5W‑40 or 15W‑40 API CJ‑4 oil. This heavy‑duty vehicle delivers the torque and durability expected of a class‑C truck, while its diesel powertrain remains a hallmark of the 3500 line. However, the model year’s reliability record shows 136 total owner complaints, with the power‑train area topping the list, and 16 recalls issued, indicating that although the truck is built for strength, its drivetrain has been a focal point for owner concerns during this generation.

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity12.0 qtOEM · verified
Engine oil type5W-40 / 15W-40 API CJ-4OEM · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI H7 · 730 CCA battery, OE oil filter 04892339BE. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI H7 · 730 CCAOEM · verified

OE service part numbers OEM · verified

Engine oil filter04892339BE alt 05083285AA
Engine air filter68441763AA alt 68190705AB
Fuel filter68157291AA alt 68197867AB
Spark plugSP138239AC alt SP143877AB
BatteryBBH7F001AA
Front wiper blades55277446AB
Serpentine belt04627589AA alt 04627751AA
Thermostat05086740AA alt 52028898AJ

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length236.2 in
Overall width80.7 in
Overall height99.2 in
Wheelbase159.1 in
Curb weight4963 lb
Track (front / rear)71.3 / 70.5 in

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 12.0 qt of 5W-40 / 15W-40 API CJ-4 engine oil, DOT 3 brake fluid. The firing order is 1-8-4-3-6-5-7-2. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Automatic Transmission FluidATF+4
Automatic Transmission Fluid Capacity5.0-6.5
Brake FluidDOT 3
Clutch FluidDOT 3
Differential Gear Oil Capacity215FD Front Axle
Engine Coolant Capacity22.6
Engine Oil5W-40 · synthetic · MS-10902 · API · 15W-40
Engine Oil Capacity12.0 qt

Engine torques

Exhaust Manifold to Cylinder Head Bolts32
Intake Manifold to Engine Bolts9

Chassis torques

Leaf Spring to Axle (U-bolts)110.0 ft-lbs
Leaf Spring to Chassis Bracket254.5 ft-lbs
Leaf Spring to Rear Shackle160.0 ft-lbs
Leaf Spring Rear Shackle to Chassis Bracket160.0 ft-lbs
Steering Track (Rod End) Bolts80.0 ft-lbs
Transfer Case Fill Plug15.0-22.0 ft-lbs
Transfer Case Drain Plug15.0-22.0 ft-lbs
Front Wheel Hub149 ft-lbs

Ignition

Cylinder Firing Order1-5-3-6-2-4
Cylinder Firing Order1-8-4-3-6-5-7-2

Battery & A/C

RefrigerantR134a
RefrigerantR134a
Refrigerant Capacity1.18-1.38 lbs
Oil GroupPAG
Oil Type46
Oil Capacity6.00-6.10 oz
RefrigerantR134a
Refrigerant Capacity1.18-1.40 lbs

Service checks

Secondary Fuel Pump Pressure500 ml in 10 seconds psi
Engine Compression350 min psi / Maximum Variation 2 psi

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 24; Rear: 22 /; Front: 24; Rear: 22
Brake Caliper Carrier to Hub Bolt TorqueFront: 260; Rear: 190 /; Front: 260; Rear: 190
ABS Sensor TorqueFront: 9.5; Rear: 17.3 /
Minimum Pad ThicknessFront: 0.040; Rear: 0.040 in
Vented Rotor Minimum Thickness for ReplacementFront: 1.472; Rear: 1.275
Variation from Parallelism Thickness Variation.0004
Maximum Rotor Runout.0009
Maximum Drum DiameterFront and Rear: NA; Parking Brake: 8.157

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 5 stages

Prep Do not reuse old bolts. Coat new bolts with the specified engine oil.

1Long bolts52 ft. lbs
2Loosen all bolts 360 degrees360 degrees
377.0 ft. lbs.77 ft. lbs
477.0 ft. lbs.77 ft. lbs
590 degrees90 degrees

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 15,000 mi; coolant every 15,000 mi. The big-interval services (every 15,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 7,500 miDiesel Emissions Fluid (inspect fluid level) · Driveshaft U-Joint (lubricate) · Tie Rod (lubricate) · Tire & Wheel Assembly (rotate)
Every 8,000 miBattery (inspect) · Brake System (inspect) · Driveshaft U-Joint (lubricate) · Tire & Wheel Assembly (rotate)
Every 15,000 miDrive Axle Assembly (inspect) · Engine Coolant System (inspect fluid level) · Engine Coolant System Hoses (inspect) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Exhaust System (Complete) (inspect)
Every 22,500 miAccessory Drive Belt (inspect) · Brake Linings (inspect) · Parking Brake System (inspect)
At 30,000 miTransmission Assembly (drain & refill)
Every 30,000 miCV Joint Boot (inspect) · Differential (inspect fluid level) · Engine Air Filter Element (replace) · Transfer Case Assembly (inspect fluid level) · Wheel Bearing (inspect)
Every 60,000 miTransmission Assembly (drain & refill) · Transmission Fluid & Filter (replace)
Every 67,500 miEngine Breather Filter (replace)
Every 97,500 miPower Steering System (drain, flush & refill)

Owner how-tos

Condensed service procedures for routine maintenance. Procedures that require dealer diagnostic equipment are identified and summarized only.

Common procedures

Key fob — remote (RKE) programming programming new fob buttons Dealer tool OEM · verified
Tool requiredDRBIII scan tool (dealer / locksmith)
WhyTransmitter codes are written into the receiver in the passenger door module
Anti-theft (SKIS) — module initialization after immobilizer module replacement Dealer tool OEM · verified
When neededAfter Sentry Key Immobilizer Module (SKIM) replacement
Tool requiredDRBIII scan tool
Also requiredThe vehicle's four-digit PIN code

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

Owner complaints about the 2015 Ram 3500 Cab top in one area — the power train, 13 of 136 reports (10%), well ahead of the next concern. None of this vehicle's 16 recall campaigns target the power train, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 3 of the reports describe a crash and 5 a fire — a small share of the total, but worth weighing against the power train pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

16
Open recalls
NHTSA campaigns
522
Service bulletins
Manufacturer communications
4
ODI investigations
Office of Defects Investigation
136
Owner complaints
3 involved a crash · 5 a fire

Owner complaints filed with NHTSA, by component

All 136 complaints on record, top 8 components.

Power Train13
Service Brakes12
Steering11
Wheels10
Engine8
Unknown Or Other7
Power Train,Engine7
Suspension6

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 16 campaigns on record for this vehicle.

19V021000Steering:Linkages:Drag:Link:ConnectionReported 25/01/2019

Chrysler (FCA US LLC) is recalling certain 2013-2018 Ram 3500 and 2014-2018 Ram 3500 Chassis Cab and Ram 2500 vehicles. The outboard steering linkage jam nut may loosen, allowing one end of the drag link to separate. Remedy: Chrysler will notify owners, and dealers will check the steering linkage jam nut tightness, replacing the drag link assembly or welding the nut to the adjuster sleeve, free of…

18E096000Steering:LinkagesReported 16/10/2018

Streetcar ORV LLC (Streetcar) is recalling certain American Expedition Vehicles (AEV) 3" Dualsport aftermarket suspension kits, part numbers N0436000 and N0436001, sold for installation on 2013-2018 RAM 2500 and 3500HD… Remedy: Streetcar will notify owners and dealers will inspect and install a new steering knuckle, free of charge. The recall began December 3, 2018. Owners may contact AEV customer…

Technical service bulletins NHTSA · verified

Showing 5 of 522 bulletins on record with NHTSA.

BulletinDateComponentSummary
S1203000003 REV.A2026-06-26Service BrakesTrac-Rite Operation Diagnosis, Chatter, Shudder, Moving From A Stop And Turning
1129062026-06-17EngineBEARING - CRANKSHAFT THRUST and KIT
1129062026-06-17EngineBEARING - CRANKSHAFT THRUST and KIT
S1623000028 Rev. K2026-06-12Electrical SystemOutside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window…
S1623000028 REV.J2026-06-05StructureOutside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P2002
Diesel particulate filter efficiency below threshold — Bank 1
P0401
Exhaust gas recirculation (EGR) flow insufficient
P20EE
SCR NOx catalyst efficiency below threshold — Bank 1
P0087
Fuel rail / system pressure too low
P0299
Turbocharger / supercharger underboost condition

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific 3500 Cab. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 2015 3500 Cab 6.7L Diesel take?

12.0 qt of In ambient temperatures below 0 degreesF, 5W-40 synthetic engine oil that meets Chrysler Materials Standard MS-10902 and the API CJ-4 engine oil category is required. In ambient temperatures above 0 degreesF, 15W-40 engine oil that meets Chrysler Materials Standard MS-10902 and the API CJ-4 engine oil category is required., per the factory manual.

Does the 2015 3500 Cab have open recalls?

NHTSA lists 16 recall campaign(s) for this model year. Check your specific vehicle by VIN.