Ram VIN Check
Every Ram vehicle manufactured for the North American market since 1981 carries a standardized 17-character Vehicle Identification Number (VIN) regulated by NHTSA under FMVSS 565 and ISO 3779. This code is unique to each vehicle and encodes the country of assembly, manufacturer identity, model attributes, engine configuration, model year, assembly plant, and production sequence number. Decoding a Ram VIN helps you verify a used-vehicle listing, confirm the correct parts and service history, check for open recalls, and detect potential title fraud.
Ram uses manufacturer-specific encoding in the Vehicle Descriptor Section (positions 4–8). Position 4 typically identifies the model line — for example, popular Ram models include 1500, 2500, 3500, ProMaster. Position 8 usually encodes the engine type. Position 9 is a mathematical check digit that detects typos and many forms of VIN tampering. Position 10 encodes the model year, and position 11 identifies the assembly plant. 1C6 is the standard WMI for U.S.-built Ram trucks; 3C6 indicates Saltillo, Mexico assembly.
Ram became a standalone truck brand in 2010, splitting from Dodge. The Ram 1500 consistently competes for best-selling truck honors with Ford F-150 and Chevrolet Silverado.
How to Read a Ram VIN
To read a Ram VIN manually, start with the WMI (positions 1–3) to confirm the manufacturer and country of origin. For Ram, the WMI prefixes in our database include 1C6, 3C6 and others depending on where the vehicle was built.
Position 4 encodes the Vehicle Line. Common values include A=Passenger car, B=Passenger car, C=Minivan, D=Sedan, E=Electric, F=SUV. Position 5 encodes trim or series level. Position 8 encodes the engine (A=2.0L Turbo, B=2.4L 4-cyl, C=3.0L V6 Diesel, D=3.6L V6 Pentastar, E=5.7L HEMI V8). Position 9 is the check digit — our decoder validates it automatically using the ISO 3779 weighted-sum algorithm. Position 10 is the model year (see our year-code reference), and position 11 is the assembly plant (A=Auburn Hills, MI, B=Belvidere, IL, C=Conner Ave, MI, D=Detroit, MI, E=Edison, NJ (historic)). Positions 12–17 are the unique serial number for that vehicle.
Because Ram may change VDS encoding between model years, treat decoded attributes as informational. Always confirm critical details (engine, trim, drivetrain) against the window sticker, build sheet, or dealer records.
Ram VIN Position Breakdown
| Pos. | Section | Standard Meaning | Ram Notes |
|---|---|---|---|
| 1 | WMI | Country of manufacture | ISO 3779 region code — e.g. 1=USA, J=Japan, W=Germany |
| 2 | WMI | Manufacturer | Combined with pos. 1–3 identifies Ram |
| 3 | WMI | Vehicle type | Ram WMI codes: 1C6 (United States), 3C6 (Mexico) |
| 4 | VDS | Vehicle Line | A=Passenger car; B=Passenger car; C=Minivan; D=Sedan; E=Electric; F=SUV; G=Truck; H=Heavy truck |
| 5 | VDS | Series / trim | Trim, series, or drive configuration |
| 6 | VDS | Body / restraint | Body style and/or restraint system (varies by year) |
| 7 | VDS | Restraint / body | Supplemental restraint or body attribute |
| 8 | VDS | Engine | A=2.0L Turbo; B=2.4L 4-cyl; C=3.0L V6 Diesel; D=3.6L V6 Pentastar; E=5.7L HEMI V8; F=6.2L Supercharged HEMI |
| 9 | Check digit | Validation | ISO 3779 weighted-sum check — detects typos and tampering |
| 10 | VIS | Model year | Standard 30-year letter/digit cycle (1980–2039) |
| 11 | VIS | Assembly plant | A=Auburn Hills, MI; B=Belvidere, IL; C=Conner Ave, MI; D=Detroit, MI; E=Edison, NJ (historic); F=Fenton, MI (historic) |
| 12–17 | VIS | Serial number | Unique production sequence at the assembly plant |
Frequently Asked Questions — Ram VIN
Where is the VIN on a Ram?
Dashboard, driver's door jamb, and stamped on the driver's side frame rail.
What does 1C6 mean in a Ram VIN?
The WMI prefix 1C6 identifies a Ram vehicle. 1C6 is the standard WMI for U.S.-built Ram trucks; 3C6 indicates Saltillo, Mexico assembly.
How do I decode a Ram VIN for free?
Enter your 17-character Ram VIN in the decoder above. Our engine validates the check digit, reads the model year, identifies the assembly plant, and applies Ram-specific rules for positions 4–8 where available.
Can a Ram VIN tell me the engine type?
For most Ram models, position 8 encodes the engine family or displacement. Our decoder maps this using manufacturer data. Popular models like 1500 and 2500 are supported.
What plants build Ram vehicles?
Position 11 is the assembly plant code. Ram operates factories worldwide — our decoder translates the plant letter to a city and country. 1C6 is the standard WMI for U.S.-built Ram trucks; 3C6 indicates Saltillo, Mexico assembly.
How do I verify a Ram VIN is genuine?
Use our decoder to validate the check digit at position 9. A valid Ram VIN like 1C6RR7LT70FS12345 must pass the ISO 3779 check-digit test. Also compare the dashboard VIN with the door jamb label — mismatches may indicate tampering.
Does the model year in a Ram VIN match the calendar year?
Not always. Position 10 encodes the model year using the standard 30-year ISO cycle. A vehicle assembled in late 2024 may carry a 2025 model-year code. Always treat position 10 as the manufacturer's designated model year.
Which Ram models can I decode?
Our decoder supports all Ram models with standard 17-character VINs since 1981, including 1500, 2500, 3500, ProMaster. WMI lookup works for every Ram VIN; detailed trim and engine data is available where manufacturer encoding is documented.