Car failed its MOT yesterday on one of the front ball joints, which I've now replaced and booked in for a retest later today.

However, one of the advisories was that a rear bush was deteriorated but not causing play and hence not a fail. I've just had a look and it's totally shot. I don't understand how it's not causing play, and even so it ought to be a failure anyway as it's clearly not holding the arm in place properly ! The arm is about 1cm away from where it should be. Bush circled in this diagram:



The bush is not listed in the ETK as separate part. Just the whole arm for £350

Any ideas ? If the bushes were available I'd do both no problem but spending 10% of the car's value on something that's not even an MOT item is pretty hard to swallow.

I guess all I can do is try to track down a low-mileage second hand one. Not exactly ideal.