Jeep CJ VIN Decoder 1971–1986
Jeep CJ VIN Decoder & Serial Number 1971–1986
Do you want to decode the Jeep CJ Vehicle Identification Number, VIN, FIN or serial number of your classic Jeep? This guide helps you identify a classic AMC-era Jeep CJ from 1971 to 1986 more accurately – including the Jeep CJ-5, CJ-6, CJ-7 and the rare Jeep CJ-8 Scrambler.
Correct identification is especially important for Jeep CJ models because many vehicles have been modified, restored or technically upgraded over the decades. Depending on the model year, the VIN or serial number can reveal key information such as model year, engine, transmission, body style, GVWR, assembly plant and vehicle build sequence.
These details help you choose the correct Jeep CJ spare parts, wear parts and accessories more reliably – especially for axles, brakes, engine parts, transmission components, body parts and electrical components.
Quick Tip: 13-Digit or 17-Digit CJ VIN?
The structure of the number immediately tells you which identification system your Jeep CJ uses:
- 1971–1980: 13-digit vehicle identification number / serial number, usually starting with J.
- 1981–1986: modern 17-digit VIN. In this format, the 10th character identifies the model year.
Important: For parts selection, the model year according to the VIN is often more important than the first registration date. A CJ may have been registered later than its actual model year.
Which Jeep CJ Models Are Covered in This VIN Guide?
This guide covers the most important Jeep CJ models built between 1971 and 1986. This period includes the classic AMC era and the technical transition from the older 13-digit identification number to the modern 17-digit VIN.
| Jeep CJ model | Relevant period | Why VIN identification matters | Relevant shop category |
|---|---|---|---|
| Jeep CJ-5 | 1971–1983 | Short-wheelbase classic CJ with many technical changes in engines, brakes, axles and transmissions. | Jeep CJ spare parts & accessories |
| Jeep CJ-6 | 1971–1975 | Rare long-wheelbase version of the CJ-5. Suspension, body and many bolt-on parts can differ significantly. | Jeep CJ spare parts & accessories |
| Jeep CJ-7 | 1976–1986 | Iconic CJ model with a longer wheelbase and squared door openings. Important for hardtops, doors, brakes and axle parts. | Jeep CJ spare parts & accessories |
| Jeep CJ-8 Scrambler | 1981–1986 | Long-wheelbase pickup / Scrambler version based on the CJ platform. VIN decoding is important for body, drivetrain and model year. | Jeep CJ spare parts & accessories |
Where Can I Find the VIN or Serial Number on a Jeep CJ?
Depending on model year and configuration, the Jeep CJ VIN or serial number may be located in different places. The typical locations differ slightly between earlier 13-digit identification numbers and later 17-digit VINs.
- Vehicle registration documents: the first reference point for the registered VIN or serial number.
- Firewall in the engine compartment: many CJ models have a metal data plate or VIN plate in this area.
- Dashboard: on later models, the VIN may be visible through the windshield on the driver’s side.
- Windshield wiper motor cover: an important VIN location on CJ models from the 1980s.
- Frame stamping: an additional stamped number may be found on the frame, often near the right-side frame rail.
Expert Tip for Restored or Modified CJ Models
On older Jeep CJ vehicles, always check several features together: VIN / serial number, data plate, frame, engine, transmission, axles and vehicle documents. Many CJ models have been fitted with different engines, axles, transmissions, body parts or accessories over the years.
What Does the Jeep CJ VIN Reveal?
Depending on the model year, the Jeep CJ VIN or serial number can provide different types of technical information. The earlier 13-digit numbers and the later 17-digit VIN are structured differently.
- Model year: 1971–1980 use the 2nd digit; 1981–1986 use the 10th character of the 17-digit VIN.
- Model / body: CJ-5, CJ-6, CJ-7 or CJ-8 Scrambler.
- Engine: for example 2.5 L, 3.8 L, 4.2 L, 5.0 L V8 or diesel version depending on year.
- Transmission: manual or automatic, sometimes with additional configuration details.
- GVWR: indicates the gross vehicle weight rating class.
- Assembly plant: for 1981–1986, Toledo is listed in the VIN structure.
- Serial number: sequential vehicle build number within the model line.
Why Is Accurate CJ Identification Important for Spare Parts?
Jeep CJ models changed technically throughout the years. Depending on year and configuration, axles, brakes, steering, transmissions, engine parts, fuel system components, body parts and electrical parts can differ.
A correctly decoded VIN or serial number helps when selecting:
- axle parts and differential components,
- brake parts for drum or disc brake systems,
- engine gaskets, carburetor parts and cooling components,
- transmission and clutch parts,
- body and soft top parts,
- electrical and lighting components.
Find Suitable Parts After Decoding Your CJ VIN
Once you have identified the model year, body style and technical configuration, you can search more precisely for suitable spare parts:
Jeep CJ VIN 1981–1986: 17-Digit Vehicle Identification Number
Starting with the 1981 model year, Jeep CJ models use the modern 17-digit VIN. In this format, the 10th character identifies the model year. The VIN also contains information about country, manufacturer, vehicle type, engine, transmission, body style, GVWR, check digit, assembly plant and vehicle build sequence.
Identify the Model Year by the 10th VIN Character
On Jeep CJ models with a 17-digit VIN, the model year is shown by the 10th character.
- B = 1981
- C = 1982
- D = 1983
- E = 1984
- F = 1985
- G = 1986
Jeep CJ VIN Codes 1981–1986
| VIN position | Meaning | Code | Explanation |
|---|---|---|---|
| 1 | Country | 1 | USA |
| 2 | Manufacturer | J | Jeep |
| 3 | Vehicle type | C | MPV / Multi Purpose Vehicle |
| 3 | Vehicle type | E | Export LHD / left-hand drive |
| 3 | Vehicle type | F | Export RHD / right-hand drive |
| 4 | Engine | B | 2.5 L 4-cylinder, 151 cui |
| 4 | Engine | L | 3.8 L 6-cylinder, 232 cui |
| 4 | Engine | C | 4.2 L 6-cylinder, 258 cui |
| 4 | Engine | H | 5.0 L 8-cylinder, 304 cui |
| 4 | Engine | N | 5.9 L 8-cylinder, 360 cui |
| 4 | Engine | F | 2.4 L diesel, 145 cui |
| 5 | Powertrain | M | 4-speed manual, part time |
| 5 | Powertrain | N | 5-speed manual, part time |
| 5 | Powertrain | A | Automatic, column shift |
| 5 | Powertrain | B | Automatic, floor shift, part time |
| 6–7 | Body style / model | 85 | CJ-5 open body |
| 6–7 | Body style / model | 86 | CJ-6 open body |
| 6–7 | Body style / model | 87 | CJ-7 open body |
| 6–7 | Body style / model | 88 | CJ-8 open body / Scrambler |
| 8 | GVWR | A | approx. 1700 kg / 3750 lb |
| 8 | GVWR | E | approx. 1882 kg / 4150 lb |
| 9 | Check digit | 0–9 / X | VIN check character |
| 10 | Model year | B | 1981 |
| 10 | Model year | C | 1982 |
| 10 | Model year | D | 1983 |
| 10 | Model year | E | 1984 |
| 10 | Model year | F | 1985 |
| 10 | Model year | G | 1986 |
| 11 | Assembly plant | T | Toledo |
| 12–17 | Serial number | six digits | Sequential vehicle build number |
Jeep CJ VIN 1975–1980: 13-Digit Vehicle Identification Number
Jeep CJ models from 1975 to 1980 use a 13-digit vehicle identification number. In this format, the 2nd digit identifies the model year. The relevant models in this period are mainly the CJ-5, CJ-6 and, from 1976 onward, the CJ-7.
Identify the Model Year by the 2nd VIN Digit
- 5 = 1975
- 6 = 1976
- 7 = 1977
- 8 = 1978
- 9 = 1979
- 0 = 1980
Jeep CJ VIN Codes 1975–1980
| VIN position | Meaning | Code | Explanation |
|---|---|---|---|
| 1 | Manufacturer | J | Jeep Corporation |
| 2 | Model year | 5 | 1975 |
| 2 | Model year | 6 | 1976 |
| 2 | Model year | 7 | 1977 |
| 2 | Model year | 8 | 1978 |
| 2 | Model year | 9 | 1979 |
| 2 | Model year | 0 | 1980 |
| 3 | Powertrain | A | Automatic transmission |
| 3 | Powertrain | F | 3-speed manual transmission |
| 3 | Powertrain | M | 4-speed manual transmission |
| 4–5 | Body style / model | 83 | CJ-5 open body |
| 4–5 | Body style / model | 84 | CJ-6 open body |
| 4–5 | Body style / model | 93 | CJ-7 open body |
| 6 | GVWR | A | approx. 1700 kg / 3750 lb |
| 6 | GVWR | E | approx. 1882 kg / 4150 lb |
| 7 | Engine | A | 4.2 L, 258 cui, 1-barrel carburetor |
| 7 | Engine | C | 4.2 L, 258 cui, 2-barrel carburetor |
| 7 | Engine | E | 3.8 L, 232 cui, 1-barrel carburetor |
| 7 | Engine | H | 5.0 L, 304 cui, 2-barrel carburetor |
| 8–13 | Serial number | six digits | Sequential vehicle build number |
Jeep CJ VIN 1971–1974: 13-Digit Vehicle Identification Number
Jeep CJ models from 1971 to 1974 also use a 13-digit identification number. In this early AMC period, the most relevant models are the Jeep CJ-5 and Jeep CJ-6. The 2nd digit identifies the model year.
Identify the Model Year by the 2nd VIN Digit
- 1 = 1971
- 2 = 1972
- 3 = 1973
- 4 = 1974
Jeep CJ VIN Codes 1971–1974
| VIN position | Meaning | Code | Explanation |
|---|---|---|---|
| 1 | Manufacturer | J | Jeep Corporation |
| 2 | Model year | 1 | 1971 |
| 2 | Model year | 2 | 1972 |
| 2 | Model year | 3 | 1973 |
| 2 | Model year | 4 | 1974 |
| 3 | Powertrain | A | Automatic transmission, LHD |
| 3 | Powertrain | F | 3-speed manual transmission, LHD |
| 3 | Powertrain | M | 4-speed manual transmission, LHD |
| 4–5 | Model | 83 | CJ-5 |
| 4–5 | Model | 84 | CJ-6 |
| 6 | Body style | 5 | Open body |
| 7 | GVWR | R | approx. 2155 kg / 4750 lb |
| 7 | GVWR | S | approx. 2041 kg / 4500 lb |
| 7 | GVWR | T | approx. 1701 kg / 3750 lb |
| 8 | Engine | A | 4.2 L, 258 cui, standard |
| 8 | Engine | B | 4.2 L, 258 cui, low compression |
| 8 | Engine | E | 3.8 L, 232 cui, standard |
| 8 | Engine | F | 3.8 L, 232 cui, low compression |
| 8 | Engine | H | 5.0 L, 304 cui, standard |
| 9–13 | Serial number | five digits | Sequential vehicle build number |
More Jeep VIN and Identification Guides
Do you need another production period? Use our other Jeep VIN and serial number guides:
- Jeep serial number & VIN 1941–1971
- Jeep VIN & identification 1987–1990
- Jeep VIN & identification 1991–1996
- Jeep VIN & identification 1997–2004
Jeep VIN and Vehicle Identification Overview
For all other model ranges and production periods, please use our central Jeep VIN & Vehicle Identification Overview.
Frequently Asked Questions About Jeep CJ VINs 1971–1986
Does my Jeep CJ have a 13-digit or 17-digit VIN?
Jeep CJ models from 1971 to 1980 generally use a 13-digit vehicle identification number. From model year 1981 onward, CJ models use the modern 17-digit VIN.
Which character identifies the model year on a Jeep CJ?
On 13-digit CJ identification numbers from 1971 to 1980, the 2nd digit identifies the model year. On 17-digit VINs from 1981 to 1986, the model year is shown by the 10th character.
Which Jeep CJ models are covered in this guide?
This guide covers the Jeep CJ-5, CJ-6, CJ-7 and CJ-8 Scrambler from 1971 to 1986.
Why is the CJ VIN important when ordering spare parts?
Many Jeep CJ parts differ depending on model year, engine, transmission, axle, brake system and body style. Correct VIN decoding helps you select suitable spare parts more reliably.
Is the first registration date or the model year more important?
For parts identification, the model year according to the VIN is often more important than the first registration date. A vehicle may have been registered later than its actual technical model year.
Where can I find suitable Jeep CJ spare parts?
Suitable parts are available in our Jeep CJ spare parts & accessories category. If you are unsure, check the VIN, model year, engine and visible vehicle features together.
