Factory build sheet
2021 Ram 3500 Crew CAB SRW
Build 3C7WR9CJ-M · 6.4L 8cyl · Four-wheel drive · Incomplete - Chassis CAB (Single CAB)
VIN positions 1 through 8 read 3C7WR9CJ 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 3C7WR9CJ and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 42 of them.
- Decoded Jul 7, 2026
- 42 known VINs
- 1 listed for sale now
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
- Four-wheel drive
- Brake system
- Hydraulic
Body & chassis
- Body class
- Incomplete - Chassis Cab (Single Cab)
- NHTSA body type
- INCOMPLETE VEHICLE
- Cab type
- Crew/Super Crew/Crew Max
- 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 | WR9CJ | 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 |
42 vehicles carry this build
Every VIN we have decoded to 3C7WR9CJ-M shares the specification above.
- 42 Known VINs
- 1 Listed for sale now
- 3C7WR9CJ 8MG644794
- 3C7WR9CJ 3MG644797
- 3C7WR9CJ 6MG644793
- 3C7WR9CJ 4MG501020
- 3C7WR9CJ 9MG577977
- 3C7WR9CJ 7MG623533
- 3C7WR9CJ 5MG649693
- 3C7WR9CJ 0MG648371
- 3C7WR9CJ 3MG597898
- 3C7WR9CJ 4MG505391
- 3C7WR9CJ 5MG520014
- 3C7WR9CJ XMG505394
- 3C7WR9CJ 8MG500128
- 3C7WR9CJ 5MG604396
- 3C7WR9CJ 4MG553733
- 3C7WR9CJ 2MG500173
- 3C7WR9CJ 0MG520065
- 3C7WR9CJ 0MG592867
- 3C7WR9CJ 3MG604347
- 3C7WR9CJ 0MG553731
- 3C7WR9CJ 4MG651435
- 3C7WR9CJ 1MG604346
- 3C7WR9CJ 8MG651552
- 3C7WR9CJ 9MG515091
- 3C7WR9CJ 7MG554102
- 3C7WR9CJ 1MG644796
- 3C7WR9CJ 6MG649718
- 3C7WR9CJ 7MG520063
- 3C7WR9CJ 6MG673310
- 3C7WR9CJ XMG673309
- 3C7WR9CJ 1MG520009
- 3C7WR9CJ 4MG520019
- 3C7WR9CJ 5MG520031
- 3C7WR9CJ 3MG651555
- 3C7WR9CJ 6MG505392
- 3C7WR9CJ 6MG568749
- 3C7WR9CJ XMG520011
- 3C7WR9CJ 3MG643147
- 3C7WR9CJ XMG644795
- 3C7WR9CJ 1MG520012
- 3C7WR9CJ 7MG648352
- 3C7WR9CJ 3MG520030
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 42 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.