Factory build sheet
2021 Ram 3500 Regular CAB DRW
Build 3C7WRSAJ-M · 6.4L 8cyl · Incomplete - Chassis CAB (Single CAB)
VIN positions 1 through 8 read 3C7WRSAJ 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 3C7WRSAJ 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 | WRSAJ | 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 3C7WRSAJ-M shares the specification above.
- 24 Known VINs
- 3C7WRSAJ 1MG577689
- 3C7WRSAJ 0MG541086
- 3C7WRSAJ 9MG568724
- 3C7WRSAJ 5MG518595
- 3C7WRSAJ 8MG570612
- 3C7WRSAJ 3MG651050
- 3C7WRSAJ 9MG651084
- 3C7WRSAJ 7MG701593
- 3C7WRSAJ 6MG570611
- 3C7WRSAJ 1MG518593
- 3C7WRSAJ 2MG538464
- 3C7WRSAJ 6MG626935
- 3C7WRSAJ 5MG651051
- 3C7WRSAJ 3MG508292
- 3C7WRSAJ XMG646833
- 3C7WRSAJ 8MG646832
- 3C7WRSAJ 2MG671712
- 3C7WRSAJ 8MG651108
- 3C7WRSAJ 9MG530622
- 3C7WRSAJ 9MG651053
- 3C7WRSAJ 2MG577734
- 3C7WRSAJ XMG570417
- 3C7WRSAJ 7MG651052
- 3C7WRSAJ 0MG691361
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.