E24: Replacing Constant-Velocity joint with VKJA 8810

Hey there...
This post is about the replacement of the Constant-Velocity joint on the output shaft of an E24. The same applies for example to an E23 or E28. This article does not describe the replacement procedure itself - for that, have a look at my other post: Overhauling dust covers -
but zooms in on some particular differences between the original BMW C-V joint and the replacement kit VKJA 8810 from SKF. This kit comes fairly complete at an affordable price of around 80 Euros. Besides the C-V joint, it includes a dust cover, grease, sealant, and the Torx bolts plus reinforcement plates to install the output shaft to the car.


The reason for replacement can be found in the inner race suffering from severe damage / wear marks.


The BMW repair manual states that the new C-V joint must be installed with the inner race collar facing the shaft. The collar is an indication of the side of the race where the teeth have a small recess. The recess is needed because the splines on the shaft don't run all the way down, as indicated by the arrow in the next picture.


The recess allows the inner race to slide completely over the shaft, such that the end of the shaft is sticking out enough to fasten the snap ring. If you mount the C-V joint the wrong way, you won't be able to fix the snap ring.

However, as can be seen in the following pictures, the aftermarket C-V joint from SKF has the collar on the other side compared to the original BMW C-V joint. In the picture below, the left one is BMW original, the right one is from SKF. Therefore, when replacing the C-V joint with the model from SKF, it must be mounted on the shaft with the collar facing outward (away from the shaft)!!




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