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Home / Diesel Trucks for Sale in Mansfield, TX | North Texas Truck Stop / 2021 Ram 2500 Longhorn mega cab 6.7l cummins 4x4 for sale in Mansfield Tx
2021 Ram 2500
$49,900
(877) 355-5008
Check Availability Save Saved
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
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2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
27
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2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX
2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 Mansfield TX

2021 Ram 2500 Longhorn Mega Cab 6.7L Cummins 4x4 

Sale Price
$49,900
Check Availability
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6 Cyl
Four Wheel Drive
Diesel
Bright White Clearcoat
Lt Mountain Brown/Brown Interior
Automatic
Check Financing Options

This 2021 Ram 2500 Limited Longhorn Mega Cab 4x4 combines the legendary 6.7L Cummins Turbo Diesel with one of the most luxurious and spacious interiors available in a heavy-duty pickup. Finished in Bright White Clear-Coat over Mountain Brown and Light Mountain Brown premium leather, this Longhorn is exceptionally well equipped with the Longhorn Level 1 Equipment Group, Towing Technology Group, Safety Group, factory fifth-wheel/gooseneck prep, and an original MSRP of $82,160.

Powertrain & Capability:

- 6.7L I6 Cummins Turbo Diesel
- 6-speed 68RFE automatic transmission
- Four-wheel drive
- 3.73 axle ratio
- Anti-spin rear differential
- Electronic shift-on-the-fly transfer case
- 5th-wheel/gooseneck towing prep
- Trailer sway damping
- Trailer light check
- Trailer tire-pressure monitoring system
- Trailer camera wiring
- 220-amp alternator
- Auxiliary switches
- Transfer-case skid plate

Longhorn Luxury & Comfort:

- Premium leather bucket seats
- Heated and ventilated front seats
- Heated second-row seats
- Heated wood/leather-wrapped steering wheel
- Power-adjustable driver's seat
- Driver seat, mirrors and pedals memory
- Dual-zone automatic climate control
- Remote start
- Remote proximity keyless entry
- Push-button start
- Mega Cab rear-seat space and storage

Longhorn Level 1 Equipment Group:

- Uconnect 12-inch touchscreen with navigation
- 17-speaker Harman Kardon premium sound system
- Ramcharger wireless charging pad
- SiriusXM with 360L
- Blind-spot monitoring with trailer coverage and cross-path detection

Towing Technology & Driver Assistance:

- Surround-view camera system
- Cargo-view camera
- Trailer reverse guidance
- Full-speed forward-collision warning plus
- Adaptive cruise control with stop
- Blind-spot monitoring with trailer detection
- Front and rear ParkSense park assist
- ParkView rear backup camera

Additional Factory Equipment:

- Towing Technology Group
- Safety Group
- Protection Group
- Longhorn Level 1 Equipment Group
- Lower two-tone paint
- Painted front and rear bumpers
- 18-inch aluminum wheels with Walnut pockets
- Painted flat wheel-to-wheel side steps
- Mopar deployable bed step
- Chrome tow hooks
- Clearance lamps

CARFAX Highlights:

- 91,221 reported miles
- 2 previous owners
- 24 service history records
- Personal-use vehicle
- No total loss reported
- No structural damage reported
- No airbag deployment reported
- No indication of odometer rollback
- No open recalls reported to CARFAX

CARFAX reports one minor accident on June 21, 2025 involving a rear-end collision with another vehicle. Damage was reported to the right-front area.

The service history is extensive. In April 2026 the truck received a pre-delivery inspection along with an oil and filter change, fuel filter replacement, four new tires, and front and rear brake service. CARFAX also documents regular oil-change history.

For someone looking for a Cummins-powered heavy-duty truck without giving up premium comfort, the Limited Longhorn Mega Cab is an especially compelling combination. The enormous Mega Cab interior, upscale Longhorn cabin, advanced towing technology and diesel capability make this a truck equally suited to long-distance towing and everyday use.

Contact North Texas Truck Stop at (877) 355-5008 for additional information or to schedule a test drive.

Looking for more options? Browse our full diesel inventory: 
https://signal.northtexastruckstop.com/relay/?fuel=diesel



Vehicle info

Stock
6517
VIN
3C6UR5PL8MG523909
Year
2021
Make
Ram
Model
2500
Mileage
92,678
Transmission
Automatic
Drivetrain
Four Wheel Drive
Fuel Type
Diesel
Exterior Color
Bright White Clearcoat
Interior Color
Lt Mountain Brown/Brown
Type
Used
Dealer
North Texas Truck Stop
Trim
Longhorn Mega Cab 6.7L Cummins 4x4
Body Style
Pickup Truck
Doors
4
Portions of the data provided are © 2026 Autodata, Inc. dba ChromeData

EQUIPMENT DETAIL

Generic
  • 10 Alpine Speakers
  • 2 12V DC Power Outlets
  • 2 LCD Monitors In The Front
  • 2 Way Rear Headrest Seat
  • 4 Way Front Headrests
  • 4G LTE Wi-Fi Hot Spot
  • 8.4" Touchscreen Display
  • Active Noise Control System
  • Analog Appearance
  • Apple CarPlay
  • Auto On/Off Projector Beam Led Low/High Beam Daytime Running Auto High-Beam Headlamps w/Delay-Off
  • Body-Colored Fender Flares
  • Cargo Lamp w/High Mount Stop Light
  • Center Hub
  • Chrome Door Handles
  • Chrome Front Bumper
  • Chrome Grille
  • Chrome Power Heated Side Mirrors w/Convex Spotter Power Folding Turn Signal Indicator and Clearance Lights
  • Chrome Rear Step Bumper
  • Chrome Side Windows Trim and Black Front Windshield Trim
  • Compass
  • Cruise Control w/Steering Wheel Controls
  • Day-Night Auto-Dimming Rearview Mirror
  • Deep Tinted Glass
  • Delayed Accessory Power
  • Driver And Passenger Visor Vanity Mirrors w/Driver And Passenger Illumination
  • Driver Seat
  • Dual Zone Front Automatic Air Conditioning
  • Fade-To-Off Interior Lighting
  • FOB Controls -inc: Keyfob Cargo Access and Keyfob Remote Start
  • Front And Rear Map Lights
  • Front Center Armrest w/Storage and Rear Center Armrest
  • Front Facing Manual Reclining Leather Rear Seat
  • Front Fog Lamps
  • Front Seat Back Map Pockets
  • Full Cloth Headliner
  • Full Floor Console w/Covered Storage Mini Overhead Console w/Storage and 2 12V DC Power Outlets
  • Full-Size Spare Tire Stored Underbody w/Crankdown
  • Galvanized Steel/Aluminum Panels
  • Garage Door Transmitter
  • Gauges -inc: Speedometer Odometer Voltmeter Oil Pressure Engine Coolant Temp Tachometer Oil Temperature Transmission Fluid Temp Engine Hour Meter Trip Odometer and Trip Computer
  • GPS Antenna Input
  • Headlights-Automatic Highbeams
  • Heated Second Row Seats
  • High Back Seats
  • HVAC -inc: Underseat Ducts and Console Ducts
  • Illuminated Front Cupholder
  • Instrument Panel Covered Bin Dashboard Storage Interior Concealed Storage Driver / Passenger And Rear Door Bins
  • Integrated Center Stack Radio
  • Integrated Navigation System w/Voice Activation
  • Integrated Roof Antenna
  • Integrated Voice Command w/Bluetooth
  • Interior Trim -inc: Aluminum/Genuine Wood Instrument Panel Insert Aluminum/Genuine Wood Door Panel Insert Leather/Genuine Wood Console Insert and Chrome/Metal-Look Interior Accents
  • Laminated Glass
  • Leather/Chrome Gear Shifter Material
  • Leather/Genuine Wood Steering Wheel
  • LED Brakelights
  • Manual Extendable Trailer Style Mirrors
  • Manual Tilt Steering Column
  • Passenger Seat
  • Perimeter Alarm
  • Perimeter/Approach Lights
  • Power 1st Row Windows w/Driver And Passenger 1-Touch Up/Down
  • Power 2-Way Driver Lumbar Adjust
  • Power Adjust 8-Way Driver Seat
  • Power Adjust 8-Way Front Passenger Seat
  • Power Adjustable Pedals
  • Power Door Locks w/Autolock Feature
  • Power Rear Window w/Defroster
  • Power Rear Windows
  • Premium Filigree Leather Seats
  • Proximity Key For Doors And Push Button Start
  • Radio w/Seek-Scan Clock Speed Compensated Volume Control Aux Audio Input Jack Steering Wheel Controls Voice Activation Radio Data System and Uconnect External Memory Control
  • Radio/Driver Seat/Mirrors/Pedals Memory
  • Rain Detecting Variable Intermittent Wipers
  • Rear 60/40 Folding Seat
  • Rear Cupholder
  • Redundant Digital Speedometer
  • Regular Amplifier
  • Regular Box Style
  • Remote Keyless Entry w/Integrated Key Transmitter Illuminated Entry and Panic Button
  • Remote Releases -Inc: Power Cargo Access
  • Seats w/Leatherette Back Material
  • Selectable Tire Fill Alert
  • Sentry Key Immobilizer
  • Side Steps
  • Smart Device Remote Engine Start
  • Spray-In Bed Liner
  • Steel Spare Wheel
  • Streaming Audio
  • Tailgate Rear Cargo Access
  • Tailgate/Rear Door Lock Included w/Power Door Locks
  • Tires: LT275/70R18E BSW All Season
  • Trip Computer
  • Valet Function
  • Vendor Painted Cargo Box Tracking
  • Ventilated Front Seats
  • Voice Recorder
  • Wheels w/Chrome Hub Covers
  • Wheels: 18" x 8.0" Polished Aluminum
Show more Show less
Options
  • 220 AMP ALTERNATOR
  • ENGINE: 6.7L I6 CUMMINS TURBO DIESEL
  • LONGHORN LEVEL 1 EQUIPMENT GROUP
  • MOPAR DEPLOYABLE BED STEP
  • PAINTED FLAT WHEEL-TO-WHEEL SIDE STEPS
  • RADIO: UCONNECT 12 W/NAVIGATION
  • TOWING TECHNOLOGY GROUP
  • TRAILER TIRE PRESSURE MONITORING SYSTEM
Show more Show less

Disclaimer: Vehicle options, features, and equipment listed may not match the actual vehicle. Details such as trim level, installed packages, and added equipment can vary. Pricing, specifications, and availability are subject to change and may not be exact. Please contact the dealership directly to confirm all information before making a purchase decision.

Want to see more like this? Browse all used diesel trucks for sale in Mansfield, TX.

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REVIEWS

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Purchasing a vehicle from the web can be a coin toss. The sales staff at North Texas Truck Stop made the experience simple and gave me confidence it was the right decision. Knowing I had a 750 mile return trip the salesman met me earlier than regular hours and expedited the paperwork process so I could get on the road. Their maintenance department had the vehicle immaculately cleaned and ready to go by the time I finished with the sales process. Overall, a great experience.
Gregory Vogt
Over a month ago
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This was our second purchase from Grant. He made the whole experience easy and thorough. The inventory had a nice variety of trucks and he helped us to find the perfect fit for our needs. We will return when it comes time again for another purchase.
Stacey Guillory
Over a month ago
google
Easiest truck buying process of my life. Worked with Grant specifically and there was no haggling or games played. Very honest. Very trustworthy, and I will be back
Dylan Groves
Over a month ago
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North Texas Truck Stop made our buying experience so easy!! We bought a used truck for my son for his first vehicle. Kevin made this experience seamless and fun from the first test drive to signing the paperwork. Thanks North Texas Truck Stop!!
Carmen Sivadge
Over a month ago
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Amazing experience!!! This is the place to go, if you are looking for a quality used vehicle! This process has been top notch from start to finish. If you want to feel like you are part of the family, then North Texas Truck Stop is the place! Grant was incredible!!! He is honest, transparent and offers high quality customer service! He got us a wonderful deal that would have been unheard of anywhere else! Thank you, Grant & NTTS family!!
Tessa Jamerson
Over a month ago

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