Factory build sheet
2021 Ram 1500 Rebel
Build 1C6SRFEM-M · 3L 6cyl · Four-wheel drive · Pickup
VIN positions 1 through 8 read 1C6SRFEM and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every 1500 whose VIN starts 1C6SRFEM 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
- 3 L
- Cylinders
- 6
- Configuration
- V-Shaped
- Engine model
- 6-cylinder turbo
- Engine manufacturer
- FCA
- Turbocharged
- Yes
- Horsepower
- 260 hp
- Fuel type
- Diesel
Drivetrain
- Drive type
- Four-wheel drive
- Brake system
- Hydraulic
Body & chassis
- Body class
- Pickup
- NHTSA body type
- TRUCK
- Cab type
- Extra/Super/Quad/Double/King/Extended
- Series
- DT
- Manufacturer
- FCA US LLC
Weight rating
- GVWR class
- Class 2F
- GVWR
- 7,001–8,000 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 | 1C6 | FCA US LLC · World manufacturer identifier |
| 4–8 | SRFEM | 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 1500 as a whole rather than this build alone.
Overall
★★★★★ 5 / 5
Frontal crash
★★★★ ★ 4 / 5
Side crash
★★★★★ 5 / 5
Rollover
★★★★ ★ 4 / 5
15 recall campaigns are recorded for the 2021 1500. Recalls are issued per VIN range — check the VIN of the car you are looking at, not the model.
24 vehicles carry this build
Every VIN we have decoded to 1C6SRFEM-M shares the specification above.
- 24 Known VINs
- 1C6SRFEM 3MN701130
- 1C6SRFEM XMN646904
- 1C6SRFEM 0MN624183
- 1C6SRFEM 9MN811051
- 1C6SRFEM 9MN641855
- 1C6SRFEM 6MN794127
- 1C6SRFEM 1MN653871
- 1C6SRFEM XMN659359
- 1C6SRFEM 2MN684191
- 1C6SRFEM 5MN658314
- 1C6SRFEM XMN565594
- 1C6SRFEM 8MN640289
- 1C6SRFEM 8MN646853
- 1C6SRFEM 7MN625458
- 1C6SRFEM 6MN529613
- 1C6SRFEM 4MN642069
- 1C6SRFEM 7MN766983
- 1C6SRFEM XMN614552
- 1C6SRFEM XMN658311
- 1C6SRFEM 3MN625876
- 1C6SRFEM 2MN689200
- 1C6SRFEM 2MN541953
- 1C6SRFEM 2MN608258
- 1C6SRFEM 5MN568841
Neighboring configurations
Other factory configurations of the 1500, 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.
- 2021 Rebel 5.7L 8-cyl · 4WD 172 vehicles
- 2021 BIG Horn, Lonestar 3L 6-cyl · 4WD 1,411 vehicles · $30,653 median
- 2021 BIG Horn, Lonestar 5.7L 8-cyl · 4WD 57,979 vehicles · $30,541 median
- 2021 Limited 3L 6-cyl · 4WD 3,926 vehicles · $37,925 median
- 2021 Laramie 5.7L 8-cyl · 4WD 42,438 vehicles · $33,999 median
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.