Factory build sheet
2021 Ram 2500 Longhorn
Build 3C6UR5LL-M · 6.7L 6cyl · Four-wheel drive · Pickup
VIN positions 1 through 8 read 3C6UR5LL and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every 2500 whose VIN starts 3C6UR5LL and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 20 of them.
- Decoded Jul 7, 2026
- 20 known VINs
This configuration is identical to 2021 Ram 2500 Longhorn 6.7L 6cyl Pickup (1,269 vehicles). That page carries the full record.
Factory specification
As filed by Ram with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.
Engine
- Displacement
- 6.7 L
- Cylinders
- 6
- Configuration
- In-Line
- Engine model
- 67l i6 24v ddi ohv turbo diesel
- Engine manufacturer
- Cummins, Inc.
- Turbocharged
- Yes
- Horsepower
- 370 hp
- Fuel type
- Diesel
Drivetrain
- Drive type
- Four-wheel drive
- Brake system
- Hydraulic
Body & chassis
- Body class
- Pickup
- NHTSA body type
- TRUCK
- Cab type
- Crew/Super Crew/Crew Max
- Manufacturer
- CHRYSLER DE MEXICO TOLUCA
Weight rating
- GVWR class
- Class 2H
- GVWR
- 9,001–10,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
The same build, other model years
Ram used the VIN pattern 3C6UR5LL for 8 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
- 2013 Longhorn 6.7L 8cyl Pickup · 79 vehicles code D
- 2014 Longhorn 6.7L 6cyl Pickup · 74 vehicles code E
- 2015 Longhorn 6.7L 6cyl Pickup · 78 vehicles code F $36,995
- 2016 Longhorn 6.7L 6cyl Pickup · 110 vehicles code G
- 2017 Longhorn 6.7L 6cyl Pickup · 79 vehicles code H
- 2018 Longhorn 6.7L 6cyl Pickup · 182 vehicles code J $40,684
- 2019 Longhorn 6.7L 6cyl Pickup · 132 vehicles code K
-
2021 You are here code M
How this VIN pattern is read
A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | 3C6 | CHRYSLER DE MEXICO TOLUCA · World manufacturer identifier |
| 4–8 | UR5LL | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | M | Model year — 2021 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
NHTSA safety ratings
Crash-test results are published per model year and body style, so they cover the 2021 Ram 2500 as a whole rather than this build alone.
Rollover
★★★ ★★ 3 / 5
8 recall campaigns are recorded for the 2021 2500. Recalls are issued per VIN range — check the VIN of the car you are looking at, not the model.
20 vehicles carry this build
Every VIN we have decoded to 3C6UR5LL-M shares the specification above.
- 20 Known VINs
- 3C6UR5LL 4MG575740
- 3C6UR5LL 2MG671060
- 3C6UR5LL 9MG625371
- 3C6UR5LL 4MG668967
- 3C6UR5LL 8MG545091
- 3C6UR5LL 6MG551018
- 3C6UR5LL 3MG577141
- 3C6UR5LL 9MG647340
- 3C6UR5LL 6MG623576
- 3C6UR5LL 5MG577142
- 3C6UR5LL 3MG643574
- 3C6UR5LL 0MG626120
- 3C6UR5LL 3MG641193
- 3C6UR5LL 1MG576103
- 3C6UR5LL 6MG671806
- 3C6UR5LL 3MG669446
- 3C6UR5LL 6MG625585
- 3C6UR5LL 1MG577140
- 3C6UR5LL 2MG650936
- 3C6UR5LL 4MG558906
Neighboring configurations
Other factory configurations of the 2500, each with its own build sheet. The set is fixed by the VIN patterns themselves, so it does not shuffle as prices or inventory move.
Keep going
Where this data comes from
Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.
Vehicle counts come from the 20 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.