New & Used Ram 3500 for Sale in Rock Springs, WY

Explore heavy-duty capability at Fremont Chrysler Dodge Jeep Ram Rock Springs, located at 1900 Foothill Blvd. Whether purchasing a brand-new Ram 3500 dually or an inspected pre-owned work truck, we support commercial fleets, Sweetwater County ranches, and heavy haulers across Southwest Wyoming with High-Output Cummins® turbo diesel and HEMI® power.

Fremont Care on Qualifying Purchases Up to 37,020 lbs Max Towing When Properly Equipped Cummins® HO Diesel & 6.4L HEMI® V8 70-Point Pre-Owned Inspection Standards

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Max payload/towing estimate ratings shown. Additional options, equipment, passengers, and cargo weight may affect payload/towing weights. See dealer for details.

Heavy-Duty Towing & Payload Performance in Sweetwater County

Operating heavy industrial machinery, managing ranch acreage, or moving multi-axle trailers across Sweetwater County demands serious commercial capability. The Ram 3500 heavy-duty platform provides the structural frame strength, axle ratings, and powertrain endurance needed to haul through the high desert of Southwest Wyoming and up steep Rocky Mountain corridors along Interstate 80.

At Fremont Chrysler Dodge Jeep Ram Rock Springs, our Foothill Boulevard showroom inventory spans brand-new factory-ordered Ram 3500 haulers as well as thoroughly inspected pre-owned work trucks. Whether you need a brand-new dual rear wheel (DRW) dually for maximum commercial hauling or a dependable used Cummins® turbo diesel for your daily ranch operations, we provide upfront vehicle history and transparent financing options.

Ram 3500 Specifications by Model Year: New vs. Pre-Owned Comparison

Heavy-duty truck performance, horsepower calibrations, transmission hardware, and maximum towing limits differ significantly across production model years. At Fremont CDJR Rock Springs, our Foothill Boulevard inventory includes current 2025–2027 factory models alongside late-model (2021–2024) and early fifth-generation (2019–2020) pre-owned work trucks. Review the verified OEM engineering specifications and towing capacities across model years below:

Mechanical Specification	New Ram 3500 (2025–2027)	Late Pre-Owned (2021–2024)	Early 5th-Gen Used (2019–2020)
6.4L HEMI® V8 Gas Horsepower	405 hp @ 5,600 rpm	410 hp @ 5,600 rpm	410 hp @ 5,600 rpm
6.4L HEMI® V8 Gas Torque	429 lb.-ft. @ 4,000 rpm	429 lb.-ft. @ 4,000 rpm	429 lb.-ft. @ 4,000 rpm
6.4L HEMI® Transmission	TorqueFlite 8HP75-LCV 8-Speed Auto	TorqueFlite 8HP75 8-Speed Auto	TorqueFlite 8HP75 8-Speed Auto
6.4L HEMI® Max Towing / Payload	Towing: Up to 18,140 lbs* Payload: Up to 7,580 lbs*	Towing: Up to 18,210 lbs* Payload: Up to 7,680 lbs*	Towing: Up to 18,210 lbs* Payload: Up to 7,680 lbs*
6.7L Cummins® Standard Output Diesel	Discontinued for 3500 Lineup (Streamlined to High-Output)	370 hp @ 2,800 rpm 850 lb.-ft. torque @ 1,700 rpm	370 hp @ 2,800 rpm 850 lb.-ft. torque @ 1,700 rpm
Standard Output Diesel Transmission	N/A (Standardized on HO)	68RFE 6-Speed Automatic	68RFE 6-Speed Automatic
Standard Output Diesel Max Towing	N/A	Up to 22,660 lbs*	Up to 22,670 lbs*
6.7L High-Output Cummins® Diesel	430 hp @ 2,800 rpm 1,075 lb.-ft. torque @ 1,800 rpm	2023–2024: 420 hp / 1,075 lb.-ft. 2021–2022: 400 hp / 1,075 lb.-ft.	400 hp @ 2,800 rpm 1,000 lb.-ft. torque @ 1,800 rpm
High-Output Diesel Transmission	ZF TorqueFlite HD 8-Speed Auto (8AP1075 electronic shift-by-wire)	Aisin AS69RC Heavy-Duty 6-Speed Auto (commercial-grade gear train)	Aisin AS69RC Heavy-Duty 6-Speed Auto (commercial-grade gear train)
High-Output Diesel Max Towing	Up to 37,020 lbs* (DRW Regular Cab)	Up to 37,090 lbs* (DRW Regular Cab)	Up to 35,100 lbs* (DRW Regular Cab)
High-Output Diesel Max Payload	Up to 6,460 lbs* (when properly equipped)	Up to 6,570 lbs* (when properly equipped)	Up to 6,680 lbs* (when properly equipped)
Frame & Max GVWR Rating	High-strength steel (up to 14,000 lbs)	High-strength steel (up to 14,000 lbs)	High-strength steel (up to 14,000 lbs)
EPA Fuel Economy Classification	Class 3 HD exempt (>8,500 lbs GVWR)	Class 3 HD exempt (>8,500 lbs GVWR)	Class 3 HD exempt (>8,500 lbs GVWR)

Understanding these model-year distinctions allows Sweetwater County operators to match specific job requirements with the optimal model year and price point:

Transmission Generation Shift (Aisin 6-Speed vs. TorqueFlite HD 8-Speed): Pre-owned High-Output Cummins trucks from 2019 through 2024 feature the Japanese-manufactured Aisin AS69RC six-speed heavy-duty automatic transmission. Known for high mechanical durability and thermal resistance under severe GCWR loads, the Aisin uses deep gear ratios tailored for extreme towing. Current 2025–2027 models introduce the all-new ZF-developed TorqueFlite HD eight-speed automatic, providing tighter gear ratio spacing, smoother hill-climb shifts along Interstate 80, and electronic shift-by-wire capability.
Cummins High-Output Torque & Horsepower Progression: When the fifth-generation Ram 3500 launched in 2019–2020, the High-Output Cummins broke records at 400 horsepower and 1,000 lb-ft of torque. For 2021–2022, torque advanced to 1,075 lb-ft (400 hp). In 2023–2024, horsepower increased to 420 hp at 1,075 lb-ft, while current 2025–2027 models deliver 430 horsepower and 1,075 lb-ft of torque.
Standard-Output Diesel on Pre-Owned Trucks: Pre-owned Ram 3500 buyers can select the 370-horsepower, 850 lb-ft Standard-Output Cummins diesel mated to the 68RFE six-speed transmission. Delivering up to 22,660 pounds of maximum towing, this powertrain offers lower purchase pricing on the used market while easily handling substantial gooseneck horse trailers and machinery haulers. Current new models discontinue this engine to focus exclusively on the High-Output diesel.
6.4L HEMI® V8 Output Across Generations: Pre-owned 2019–2024 HEMI models produce 410 horsepower and 429 lb-ft of torque, whereas 2025–2027 models are factory calibrated to 405 horsepower and 429 lb-ft of torque. In both generations, the HEMI delivers the platform's highest payload ratings (up to 7,580–7,680 pounds) and quick warm-up in Wyoming sub-zero weather.
Configuration Specifics for Maximum Tow Ratings: Peak towing figures (37,020 pounds on new trucks, 37,090 pounds on 2021–2024 used trucks, and 35,100 pounds on 2019–2020 used trucks) require a properly equipped Regular Cab 4x2 Dual Rear Wheel (DRW) setup with appropriate axle ratios (4.10 or 3.42) and commercial gooseneck hitch hardware. Pre-owned buyers can review original window stickers and build codes with our sales advisors to verify exact ratings.
Federal Class 3 Heavy-Duty EPA Status: Across every model year—both new and pre-owned—Ram 3500 pickups carry a Gross Vehicle Weight Rating (GVWR) between 10,700 and 14,000 pounds. Vehicles exceeding 8,500 pounds GVWR are federally exempt from EPA consumer window sticker fuel economy estimates. Real-world operating efficiency is determined by payload weight, trailer aerodynamics, terrain grade, and axle ratio.

New vs. Pre-Owned Ram 3500: Buyer Decision Factors

Choosing between a new and pre-owned Ram 3500 depends on your operational schedule, depreciation preferences, and technology requirements. Both avenues offer tangible advantages for Sweetwater County truck buyers:

Benefits of Buying a New Ram 3500

Latest engineering, full factory warranty, and custom commercial configurations

High-Output Torque & 8-Speed Gearing: New models feature the latest Cummins calibration yielding 1,075 lb-ft of torque paired directly to the TorqueFlite HD eight-speed automatic transmission for optimized gear step ratios under heavy loads.

Uconnect 5 & Digital Towing Displays: Access available 14.5-inch high-resolution touchscreens, digital rearview mirrors with integrated tow mode, and 360-degree trailer camera views that eliminate blind spots when backing into tight loading docks.

Factory Warranty & Custom Ordering: Factory 5-year/100,000-mile powertrain warranty on diesel models, plus the ability to order exact commercial wheelbase, alternator, and gear ratio specifications tailored to your business.

Benefits of Buying a Used Ram 3500

Proven mechanical platforms, lower acquisition cost, and immediate jobsite readiness

Exceptional Value Retention: Pre-owned Ram 3500 trucks avoid early depreciation cycles, providing commercial buyers and independent operators with high payload and towing capacities at a lower total entry investment.

Proven Driveline Heritage: Used inventory includes highly regarded previous-generation Cummins 6.7L turbo diesels paired with dependable six-speed Aisin or 68RFE automatic transmissions, trusted across millions of highway miles.

Immediate Work-Ready Upfits: Many pre-owned Ram 3500 trucks arrive already equipped with valuable aftermarket work equipment, such as commercial fifth-wheel hitches, toolboxes, grille guards, and auxiliary fuel tanks.

Rigorous Pre-Owned Inspection & Quality Standards

Heavy-duty trucks in Wyoming endure demanding duties, from pulling livestock trailers across unimproved terrain to supporting oilfield and mining operations. At Fremont CDJR Rock Springs, every pre-owned Ram 3500 undergoes a thorough mechanical evaluation before reaching our sales lot:

Chassis & Solid Axle Verification: Technicians inspect the hydroformed high-strength steel frame for alignment integrity, check leaf spring packs and bushings, and evaluate American Axle Manufacturing (AAM) solid front and rear drive axles.
Diesel Emissions & Turbo Diagnostics: Our factory-trained technicians analyze exhaust aftertreatment systems, verify diesel particulate filter (DPF) condition, test DEF dosing functionality, and inspect turbocharger boost pressure under load.
Commercial Towing Component Checks: We measure brake rotor runout, assess heavy-duty brake pad wear, test integrated trailer brake controllers, and verify structural integrity on Class V frame-mounted hitch receivers.
CARFAX® Vehicle History Verification: Every used truck includes a detailed CARFAX® report verifying past ownership, scheduled maintenance history, odometer accuracy, and title clarity.

Cab Configurations, Bed Dimensions & Drivelines

Selecting the appropriate chassis architecture ensures proper weight distribution, trailer swing radius, and crew accommodation:

Regular Cab (8-Foot Bed): Built on a 140.5-inch wheelbase, the two-door Regular Cab maximizes cargo volume with 74.7 cubic feet of bed storage. Available in Single Rear Wheel (SRW) or Dual Rear Wheel (DRW) layouts, this setup achieves the platform's peak payload ratings, making it a primary choice for utility service bodies and flatbed ranch conversions.
Crew Cab (6-Foot 4-Inch or 8-Foot Bed): Accommodates up to six passengers across two spacious seating rows. The 8-foot bed version provides ample clearance for gooseneck and fifth-wheel hitches without requiring specialized sliding hitches, while the 6-foot 4-inch bed provides easier turning clearance in staging yards and parking facilities.
Mega Cab® (6-Foot 4-Inch Bed, 4x4 Only): Engineered for long-distance transport, the Mega Cab provides 43.1 inches of rear legroom, second-row reclining seats, and 9.1 cubic feet of secure in-cab storage behind the rear seats to safeguard surveying electronics, tools, and high-value equipment from outdoor weather.
Single Rear Wheel (SRW) vs. Dual Rear Wheel (DRW): SRW trucks provide standard tracking dimensions and easier maneuverability on residential roads and standard trails. DRW dually trucks add two additional tires on the drive axle, expanding rear Gross Axle Weight Rating (GAWR) up to 9,750 pounds and resisting high-profile trailer sway in Wyoming crosswinds.

Ram 3500 Trim Level Hierarchy

Whether you require an essential work truck or an executive-level towing vehicle, the Ram 3500 offers specialized equipment tiers across both new and pre-owned models:

Tradesman: Built for work with heavy-duty vinyl or cloth seats, easy-wash black molded flooring, black grille surround, push-button start, and a standard Class V 2.5-inch or 3-inch trailer hitch receiver.
Big Horn: Adds chrome exterior accents, 18-inch polished wheels, power-folding trailer tow mirrors, integrated trailer brake controller, and available Uconnect 5 touchscreen connectivity.
Laramie: Combines heavy-duty utility with premium refinement, featuring leather-trimmed seating, heated and ventilated front seats, dual-zone automatic climate control, and available 12-inch or 14.5-inch digital touchscreens.
Limited Longhorn: Distinctive Southwestern styling with authentic full-leather seating, genuine open-pore wood interior accents, heated second-row seats, and chrome window moldings.
Limited: The premium standard in heavy-duty trucks, offering full-grain leather seating, power-deployable cab-length running boards, active blind spot monitoring with trailer detection, and adaptive cruise control.

Built for Southwest Wyoming Demands

Driving conditions across Sweetwater County present distinct challenges, including high elevation, persistent winter wind, and rough unimproved access roads. The Ram 3500 incorporates specific hardware to master these regional realities:

High-Altitude Mountain Towing

Rock Springs sits at 6,388 feet above sea level, where thinner atmosphere reduces power in unboosted engines. The Cummins turbocharger maintains consistent air density, providing dependable torque over South Pass and I-80 summits. When descending steep mountain grades, the smart diesel exhaust brake utilizes variable turbo geometry to control vehicle speed, protecting the primary wheel service brakes from overheating.

Mining & Ranch Infrastructure

Sweetwater County represents the global trona mining center alongside extensive natural gas and cattle operations. The Ram 3500 handles harsh industrial environments through a fully boxed high-strength 50,000-PSI steel frame, heavy-duty American Axle Manufacturing (AAM) solid front and rear drive axles, and available factory-installed 30,000-lb fifth-wheel and gooseneck bed mounting hardware.

Sub-Zero High-Desert Winter Care

Wyoming winter temperatures regularly drop below zero degrees Fahrenheit. Available dual 220-amp alternators provide 440 amps of electrical output for plows and auxiliary winches, while factory engine block heaters, heated fuel filtration systems, and anti-spin rear differentials deliver reliable cold-morning ignition and confident traction across snow-packed highways.

Ownership Protection & Dealership Advantage

At Fremont Chrysler Dodge Jeep Ram Rock Springs, we stand behind our new and pre-owned inventory with verified customer support programs:

Included With Eligible Purchases

1-Year Fremont Care Protection

Routine maintenance support included with qualifying new & pre-owned purchases

2 Oil Changes: Completed within the initial 12 months of ownership by factory-trained technicians.
2 Tire Rotations: Completed within the initial 12 months of ownership to promote even commercial tire wear.
Multi-Point Inspection: Detailed mechanical check completed during every scheduled service visit.
Statewide Protection: Honored at any Fremont Motor Company service department across Wyoming.

Fremont Certified

Fremont Certified Pre-Owned Program

Inspected pre-owned trucks with factory-trained certification & warranty coverage

70-Point Mechanical Inspection: Rigorous examination of safety systems, drivetrain, brakes, and electrical components.
3-Month / 3,000-Mile Warranty: Limited warranty coverage providing added peace of mind on qualifying used trucks.
National History Report: Full CARFAX® vehicle history verification confirming title status.
1-Year Fremont Care Plan: Qualifying Fremont Certified used purchases also receive 1-year Fremont Care maintenance.

Frequently Asked Questions About New & Used Ram 3500 Trucks

How do Ram 3500 towing specs and horsepower differ between used model years and new models?

Ram 3500 specifications vary based on production year. New 2025–2027 models with the High-Output Cummins® diesel deliver 430 horsepower, 1,075 lb-ft of torque, and tow up to 37,020 pounds with the ZF TorqueFlite HD eight-speed automatic. Pre-owned 2023–2024 models produce 420 horsepower (1,075 lb-ft) and tow up to 37,090 pounds with the Aisin six-speed transmission. Early 2019–2020 pre-owned models produce 400 horsepower (1,000 lb-ft) with a 35,100-pound maximum towing limit. On gas models, 2019–2024 pre-owned trucks are rated at 410 horsepower (up to 18,210 lbs towing), while 2025–2027 models are rated at 405 horsepower (up to 18,140 lbs towing).

What is the difference between the Aisin 6-speed and the new TorqueFlite 8-speed transmission in the Ram 3500?

Used Ram 3500 High-Output Cummins diesel models from 2019 through 2024 feature the Japanese-manufactured Aisin AS69RC heavy-duty six-speed automatic transmission, known for its heavy cast-iron case and proven mechanical reliability under severe gross combined weight loads. Current 2025–2027 models introduce the ZF-developed TorqueFlite HD eight-speed automatic (8AP1075), which offers smaller gear ratio steps, smoother hill-climbing acceleration, electronic shift-by-wire controls, and improved cruise cadence when hauling through Wyoming mountain corridors.

What should I inspect when shopping for a used Ram 3500 in Wyoming?

When shopping for a pre-owned heavy-duty truck in Wyoming, prioritize inspecting the solid front and rear axle seals, steering linkages, diesel particulate filter (DPF) regeneration history, turbocharger boost pressure, brake rotor wear, and hitch receiver condition. At Fremont CDJR Rock Springs, every used Ram 3500 undergoes a thorough multi-point mechanical inspection by certified technicians, and qualifying models include a 70-point inspection and CARFAX® history report.

Does the Ram 3500 have an EPA-estimated MPG rating?

No. The United States Environmental Protection Agency (EPA) does not test, rate, or report fuel economy for heavy-duty commercial vehicles with a Gross Vehicle Weight Rating (GVWR) exceeding 8,500 pounds. Because all Ram 3500 models feature GVWR ratings between 10,700 and 14,000 pounds, both new and used models are federally exempt from EPA consumer MPG estimates.

Should I choose Single Rear Wheel (SRW) or Dual Rear Wheel (DRW)?

Choose Single Rear Wheel (SRW) if your primary needs involve routine driving, standard garage dimensions, and conventional trailer weights under 26,000 pounds. Choose Dual Rear Wheel (DRW / dually) if you regularly haul heavy slide-in campers, commercial payload exceeding 4,500 pounds, or pull heavy fifth-wheel and gooseneck trailers up to 37,020 pounds, as the four rear tires provide superior pin-weight distribution and lateral stability in Wyoming wind.

What warranty and maintenance coverage comes with new and used Ram 3500 trucks?

New Ram 3500 trucks include factory warranty coverage, including a 5-year/100,000-mile powertrain warranty on Cummins diesel models (or 5-year/60,000-mile on HEMI models), plus 1-year Fremont Care (providing 2 oil changes and 2 tire rotations within the initial 12 months) on qualifying purchases. Qualifying Fremont Certified pre-owned trucks include a 3-month/3,000-mile limited warranty, clean CARFAX® history report, and 1-year Fremont Care maintenance coverage.

Can the Ram 3500 be ordered or fitted with a fifth-wheel or gooseneck package?

Yes. New Ram 3500 models can be ordered with the factory Fifth-Wheel and Gooseneck Towing Prep Group, which integrates structural frame pucks, a center ball receptacle, and an in-bed 7-pin electrical harness. Many of our pre-owned Ram 3500 trucks already feature factory prep packages or commercial aftermarket fifth-wheel hardware. Additionally, all models feature a Class V 2.5-inch or 3-inch hitch receiver rated for up to 2,300 pounds of tongue weight.

*Disclosures & Towing Disclaimers: When properly equipped. Maximum trailer weight ratings and payload capacities are rounded to the nearest 10 pounds and are mutually exclusive. Gross Vehicle Weight Ratings (GVWR), Gross Axle Weight Ratings (GAWR), and Gross Combined Weight Ratings (GCWR) must never be exceeded. Conventional receiver hitch tongue weight is limited to 2,300 pounds on Ram 3500 models. Trailers exceeding 23,000 pounds require an appropriate fifth-wheel or gooseneck hitch.

Fremont Care comes with eligible vehicle purchases and provides 2 oil changes and 2 tire rotations within the initial 12 months of ownership. Fremont Certified Pre-Owned limited warranty coverage applies to qualifying used vehicles and provides 3 months or 3,000 miles of limited warranty protection from date of purchase. See dealer for specific eligibility details, commercial limitations, and full program terms.