Differential Identification: ID Your Axle

Ordering the wrong bearing kit or gearset because you guessed the diff type is an expensive mistake. Most diffs can be identified in a few minutes with a torch and a tape measure.

Start with the housing

Count the cover bolts, note whether the centre is a removable third member or an integral carrier, and measure the ring gear if you can get the cover off. The shape of the housing alone narrows things down a long way.

Then look for tags and stampings

Many axles carry a tag under one of the cover bolts, and the ratio and build date are often stamped on the housing or the axle tube. Send us a photo of these with your rego and we will confirm what you have.