Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Axle Ratio Identification: Jeep
On "CJ" and Scrambler models, the front axle code number is cast into bottom surface of housing. On all other models the front axle code number is cast into upper surface of reinforcing rib at left side of axle housing. A gear ratio tag is attached to left side of axle housing cover on front axles. On all models except "J20" truck models, rear axle ratio code letter is located on axle housing tube boss, adjacent to dowel hole. On "J20" truck models, rear axle model number is cast into boss on lower right side of axle housing, adjacent to housing cover.
| Code | Ratio | |||
|---|---|---|---|---|
| Conventional Differentials | ||||
| D | 2.73:1 | |||
| B | 3.31:1 | |||
| A | 3.54:1 | |||
| GG | 3.73:1 | |||
| C | 4.10:1 | |||
| Locking Differentials | ||||
| DD | 2.73:1 | |||
| CC | 3.31:1 | |||
| AA | 3.54:1 | |||
| Q | 3.73:1 | |||
| CC | (1) 4.10:1 | |||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.