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.
Dana/Spicer Model Identification
Model Series can be determined two ways. It is cast on differential housing in one of three locations: Right rear, on rib below axle housing; on top, to right of centerline; on bottom, on rib between axle bore and pinion bore. Model Series can also be determined by diameter of ring gear.
| Ring Gear Diameter | Model Series Number |
|---|---|
| 7.125" | 27-XX, 30-XX |
| 8.5" | 44-XX |
| 9.25" | 53-XX |
| 9.75" | 60-XX |
| 10.5" | 70-XX |
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.