Factory build sheet
2021 Ram 3500 Regular CAB SRW
Build 3C7WR9AJ-M · 6.4L 8cyl · Four-wheel drive · Incomplete - Chassis CAB (Single CAB)
VIN positions 1 through 8 read 3C7WR9AJ 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 3C7WR9AJ 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
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
- 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 | WR9AJ | 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 3C7WR9AJ-M shares the specification above.
- 42 Known VINs
- 3C7WR9AJ 0MG518075
- 3C7WR9AJ 3MG553838
- 3C7WR9AJ 5MG553842
- 3C7WR9AJ XMG522148
- 3C7WR9AJ 4MG673390
- 3C7WR9AJ 9MG694610
- 3C7WR9AJ 6MG540324
- 3C7WR9AJ 5MG568518
- 3C7WR9AJ XMG553884
- 3C7WR9AJ 8MG520060
- 3C7WR9AJ 4MG673387
- 3C7WR9AJ 3MG651557
- 3C7WR9AJ 4MG541424
- 3C7WR9AJ 0MG694611
- 3C7WR9AJ 9MG515126
- 3C7WR9AJ 4MG673289
- 3C7WR9AJ 6MG673388
- 3C7WR9AJ 8MG520043
- 3C7WR9AJ XMG694406
- 3C7WR9AJ 2MG501018
- 3C7WR9AJ 0MG694432
- 3C7WR9AJ 8MG541300
- 3C7WR9AJ 8MG673389
- 3C7WR9AJ 9MG570420
- 3C7WR9AJ XMG515118
- 3C7WR9AJ 2MG694433
- 3C7WR9AJ 5MG541299
- 3C7WR9AJ 7MG553888
- 3C7WR9AJ XMG604297
- 3C7WR9AJ 2MG552034
- 3C7WR9AJ 3MG538952
- 3C7WR9AJ 1MG604298
- 3C7WR9AJ XMG593219
- 3C7WR9AJ 1MG626947
- 3C7WR9AJ 1MG593514
- 3C7WR9AJ 3MG520094
- 3C7WR9AJ 9MG575956
- 3C7WR9AJ 9MG668878
- 3C7WR9AJ 7MG694539
- 3C7WR9AJ 9MG694431
- 3C7WR9AJ 5MG694426
- 3C7WR9AJ 7MG694427
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.