This is important because the aluminum LBJ's will fatigue and fail.
I'm amazed at how many early 928s I find still running their original aluminum ones! Please check your early 928, easy to do with with a magnet - or use TSB 84-01 for pictorial reference.
The TSB outlines more parts than absolutely needed. For safe replacement, here is what you need to service both sides:
- (2) Lower ball-joint, steel - p/n 928 341 049 12
- (2) Eccentric, camber/caster - p/n 928 341 466 00
You may reuse two of the original 26mm diameter camber eccentrics, p/n 928 341 466 01. Also the brackets, only difference being the original studs are longer and will stick out a little more.
Please note: Steel LBJ p/n 928 341 049 12 is thru MY86 - late model steel will not work for this service.