Chat with us, powered by LiveChat 1975-1980 Jeep CJ Vehicle Identification Number (VIN) Decoder | Quadratec Skip to main content
Reference

1975-1980 Jeep CJ VIN numbers can be found in a few different places. They can be on the driver's side firewall near the brake master cylinder, on the driver's side dash or near the parking brake lever on the inside body panel.


Character
   
1st
J
(Jeep Corp.)
Make
2nd
5 = 1975
6 = 1976
7 = 1977
8 = 1978
9 = 1979
0 = 1980
Year
3rd
A = Auto
F  = 3 speed
M = 4 speed
Transmission
4th & 5th
83 = CJ-5
84 = CJ-6
93 = CJ-7
Model
6th
A = 3,750 lbs
E = 4,150 lbs
GVW
(Gross Vehicle Weight)
7th
A = 258ci, 1 bbl
C = 258ci, 2 bbl
E = 232ci, 1 bbl
H = 304ci, 2 bbl
Engine
8th - 13th
######
SSN
(Sequential Serial Number)

Courtesy of Jeepfan.com



Top Jeep Articles

  • August 11, 2025
  • 5 min read
Trail Etiquette 101: Essential Off-Road Rules Every Jeep Owner Should Follow
Trail respect starts here—learn the essential rules for safe, responsible and fun Jeep off-roading adventures.
READ MORE
  • August 8, 2025
  • 4 min read
Seven Slot Dispatch 8.8.25
Weekly Jeep-related news items from around the industry and community.
READ MORE
  • August 7, 2025
  • 9 min read
What Is The Best Jeep Wheel - Alloy or Steel?
While they both have their strengths, is one really better than another?
READ MORE
  • August 4, 2025
  • 4 min read
Jeep Tire Q&A
Expert answers to help you choose, care for, and maximize your Jeep’s tires on any adventure.
READ MORE
  • August 4, 2025
  • 10 min read
The Difference Between Horsepower and Torque
When it comes to your vehicle's performance, is one really better than another?
READ MORE
  • August 1, 2025
  • 3 min read
Seven Slot Dispatch 8.1.2025
Weekly Jeep-related news items from around the industry and community.
READ MORE
  • July 30, 2025
  • 8 min read
How To Fit 37-Inch Tires On Your Jeep
While 37-inch tires are becoming an extremely popular size for Jeep owners these days,
READ MORE
  • July 29, 2025
  • 4 min read
Diesel Exhaust Fluid And Your Wrangler EcoDiesel: What It Is, Why It Matters, And What Happens If You Skip It
Understanding DEF and why keeping your EcoDiesel topped off is crucial for performance, compliance, and peace of mind.
READ MORE