2012 Ram 3500: What's New, Specs & Features

Last updated August 4, 2026

2012 Ram 3500

The 2012 Ram 3500 is a light-update year led by an expanded trim lineup rather than a redesign. The core truck, including its 6.7-liter Cummins diesel hardware, carries over.

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About the 2012 Ram 3500

4th-generation Ram Heavy Duty (2010-2012), final year before the extensively reworked 2013 HD trucks.

The 2012 Ram 3500 is Ram's one-ton tow-and-haul pickup for buyers who need serious diesel pulling power but still want a more comfortable cabin than a stripped commercial truck. Its core appeal is the 6.7L Cummins diesel, factory exhaust brake, huge towing capability, and a wide trim spread that runs from basic ST work trucks to upscale Longhorn models. Compared with rivals, Ram leaned heavily on torque, cabin space, and richer interiors without giving up heavy-duty credibility.

The 2012 range stretches from the vinyl-seat ST work truck to the leather-lined Longhorn models. Big Horn and Lone Star bring premium cloth and a power driver's seat to the middle of the lineup, while Outdoorsman adds an anti-spin rear differential, heavy-duty shocks, and tow hooks. Laramie focuses on comfort and tech with heated leather seats, navigation, and a rearview camera.

What changed, by category

Powertrain
Gas-engine Ram Heavy Duty models switch to a new six-speed automatic transmission. Diesel 3500 models retain the 6.7-liter Cummins engine with manual and automatic transmission choices.
Styling
Big Horn, Lone Star, Outdoorsman, and Laramie Longhorn Limited Edition join the trim lineup. The ST also adopts a black grille and black front and rear bumpers.
Tech
A new steering wheel is fitted across the Heavy Duty range. On Laramie, navigation and the rearview camera become standard, while parking assistance moves from standard to optional.

2012 Ram 3500 specs and features by trim

Feature
2012 Ram 3500ST0 in stock
2012 Ram 3500SLT1 in stock
2012 Ram 3500Laramie0 in stock
2012 Ram 3500Big Horn0 in stock
2012 Ram 3500Lone Star0 in stock
2012 Ram 3500Outdoorsman0 in stock
2012 Ram 3500Laramie Longhorn Edition0 in stock
2012 Ram 3500Laramie Longhorn Limited Edition0 in stock
Engine6-Cyl, Turbo Diesel, 6.7 Liter6-Cyl, Turbo Diesel, 6.7 Liter6-Cyl, Turbo Diesel, 6.7 Liter6-Cyl, Turbo Diesel, 6.7 Liter6-Cyl, Turbo Diesel, 6.7 Liter6-Cyl, Turbo Diesel, 6.7 Liter6-Cyl, Turbo Diesel, 6.7 Liter6-Cyl, Turbo Diesel, 6.7 Liter
TransmissionAutomatic, 6-SpdAutomatic, 6-SpdAutomatic, 6-SpdAutomatic, 6-SpdAutomatic, 6-SpdAutomatic, 6-SpdAutomatic, 6-SpdAutomatic, 6-Spd
Drivetrain4WD4WD4WD4WD4WD4WD4WD4WD
Fuel TypeDieselDieselDieselDieselDieselDieselDieselDiesel
Horsepower350 hp350 hp350 hp350 hp350 hp350 hp350 hp350 hp
Torque650 lb-ft610–650 lb-ft610–650 lb-ft610–650 lb-ft610–650 lb-ft610–650 lb-ft800 lb-ft800 lb-ft
Max Towing16750–22300 lb16650–22300 lb16600–19350 lb16650–20650 lb16650–20650 lb16400–16650 lb16550–19050 lb16550–19050 lb
Rear Legroom40.3 in34.7–40.3 in34.7–40.3 in34.7–40.3 in34.7–40.3 in34.7–40.3 in34.7–40.3 in34.7–40.3 in
Seats3–63–6666655
Doors2–42–4444444
Alarm System
Park Assist
Rear View Camera
Alloy Wheels
Fog Lights
Memory Exterior Mirrors
Power Moonroof
Side Steps
Bluetooth
Built-In Hard Drive
Front DVD Entertainment System
Navigation System
Satellite Radio
Subwoofer
USB Ports
115V Power Outlet
Auto-Dimming Interior Mirror
Dual Power Front Seats
Dual Power Lumbar Support Front Seats
Dual-Zone Climate Control
Heated Front Seats
Heated Rear Seats
Heated Steering Wheel
Integrated Garage Door Opener
Leather Seats
Leather-Wrapped Steering Wheel
Memory Driver's Seat
Memory Pedals
Power Adjustable Pedals
Power Driver Seat
Remote Start
Remote Keyless Entry
Tilt Wheel
Ventilated Front Seats

How the 2013 Ram 3500 compares

The biggest change for the 2013 Ram 3500 is a major Heavy Duty redesign centered on a stronger chassis and higher towing and payload capability. It also gains broader safety coverage, a more modern cabin, refreshed front-end styling, and significant diesel upgrades.

Frequently asked questions

Is the 2012 Ram 3500 a redesign?

No. The 2012 Ram 3500 is a lightly updated carryover and the final model year of the 2010–2012 Heavy Duty generation before the extensively reworked 2013 truck.

What is the main powertrain change for the 2012 Ram 3500?

Gas-engine Heavy Duty trucks receive a new six-speed automatic transmission for 2012. The 3500's 6.7-liter Cummins diesel hardware carries over with manual and automatic transmission choices.

Which trims were added to the 2012 Ram 3500 lineup?

Big Horn, Lone Star, Outdoorsman, and Laramie Longhorn Limited Edition were added for 2012. They broaden the range with dressier midlevel, rugged-use, and high-luxury versions.

What changed on the 2012 Ram 3500 Laramie?

The 2012 Laramie gains the lineup's new steering wheel, while navigation and the rearview camera become standard. Parking assistance changes from standard to optional.

Is the 2012 Ram 3500 a major upgrade over the 2011 model?

No. The 2012 truck keeps the same basic design and diesel hardware, but it adds several trims, updates the gas automatic transmission, gives the ST a blacked-out look, and adds standard navigation and a rearview camera to Laramie.