Factory build sheet
2021 Ram 3500 Regular CAB DRW
Build 3C7WRSBJ-M · 6.4L 8cyl · Incomplete - Chassis CAB (Single CAB)
VIN positions 1 through 8 read 3C7WRSBJ and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every 3500 whose VIN starts 3C7WRSBJ and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 24 of them.
- Decoded Jul 7, 2026
- 24 known VINs
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
- 6.4 L
- Cylinders
- 8
- Configuration
- V-Shaped
- Engine model
- 370 hp 64l v8
- Engine manufacturer
- FCA
- Horsepower
- 410 hp
- Fuel type
- Gasoline
Drivetrain
- Drive type
- 4x2
- Brake system
- Hydraulic
Body & chassis
- Body class
- Incomplete - Chassis Cab (Single Cab)
- NHTSA body type
- INCOMPLETE VEHICLE
- Cab type
- Regular
- Manufacturer
- CHRYSLER DE MEXICO TOLUCA
Weight rating
- GVWR class
- Class 3
- GVWR
- 10,001–14,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
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 | 3C7 | CHRYSLER DE MEXICO TOLUCA · World manufacturer identifier |
| 4–8 | WRSBJ | 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 |
24 vehicles carry this build
Every VIN we have decoded to 3C7WRSBJ-M shares the specification above.
- 24 Known VINs
- 3C7WRSBJ 5MG568735
- 3C7WRSBJ 9MG538458
- 3C7WRSBJ 3MG507268
- 3C7WRSBJ 7MG568736
- 3C7WRSBJ 1MG522111
- 3C7WRSBJ 0MG500889
- 3C7WRSBJ 6MG670853
- 3C7WRSBJ 2MG619897
- 3C7WRSBJ 7MG500890
- 3C7WRSBJ 8MG522106
- 3C7WRSBJ 3MG506847
- 3C7WRSBJ 8MG601260
- 3C7WRSBJ 2MG500893
- 3C7WRSBJ XMG541109
- 3C7WRSBJ 4MG500894
- 3C7WRSBJ 3MG538455
- 3C7WRSBJ 4MG603538
- 3C7WRSBJ 0MG500892
- 3C7WRSBJ XMG601261
- 3C7WRSBJ 9MG500891
- 3C7WRSBJ 5MG593473
- 3C7WRSBJ 9MG500888
- 3C7WRSBJ 8MG669753
- 3C7WRSBJ 0MG529616
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 24 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.