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.
Section 2 (Drive Axle Ratio Identification): Identification
Axle ratio code is stamped on Vehicle Certification Plate located on rear face of left door on all models. First 2 digits of code identifies ratio and capacity of rear axle.
Third digit of code identifies ratio and capacity of front axle. Rear axles have a tag bolted to drive axle that contains drive axle ratio. Code designations are as follows:
| Code | Ratio | |
|---|---|---|
| Conventional Rear Differential | ||
| 17 | 2.47:1 | |
| 14 | 3.00:1 | |
| 31 | 3.07:1 | |
| 18, 72, 41 | 3.08:1 | |
| 74, 84, 42 | 3.45:1 | |
| 16 | 3.50:1 | |
| 23, 33, 43, 53 | 3.54:1 | |
| 19, 26 | 3.55:1 | |
| 24, 34, 86, 96 | 3.73:1 | |
| 22, 32, 52, 62, 42, 87 | 4.10:1 | |
| 65 | 4.56:1 | |
| Locking Rear Differentials | ||
| B1, H4 | 3.00:1 | |
| H8 | 3.08:1 | |
| F4, D2 | 3.45:1 | |
| C3, B3, D3, E3 | 3.54:1 | |
| H9, B6 | 3.55:1 | |
| C4, E4, F6, D4, K6, 44 | 3.73:1 | |
| C2, D2, E2, F7, B2 | 4.10:1 | |
| Conventional Front Differential | ||
| E37A-AF, E3TA-SC, E3TA-TC, E3TA-UA | 3.07:1 | |
| E37A-KE | 3.08:1 | |
| E37A-KF, E37A-LF | 3.45:1 | |
| E4TA-AMA, E4TA-ANA, E4TA-ARA | 3.50:1 | |
| E3TA-ABC, E3TA-AFA, E3TA-AFD, | - | |
| E3TA-AKC, E3TA-ALC, E3TA-AMC, | - | |
| E3TA-ANC, E3TA-VC, E3TA-XC | 3.54:1 | |
| E37A-ACC, E37A-AEC | 3.73:1 | |
| E3TA-APA | 4.09:1 | |
| E3TA-AHC | 4.10:1 | |
| Locking Front Differentials | ||
| 34TA-APA, E4TA-APP | 3.50:1 | |
| E3TA-AJC, E3TA-VA, E3TA-UC | 3.54:1 | |
| E37A-ADC | 3.73:1 | |
| E4TA-ASA | 4.09:1 | |
NO RELATED
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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.