If the swirl flaps should not move as shown, especially not the third from the left that has the actuator on the backside, the swirl actuator is broken. The actuator is available separately, but it is very difficult to access, because it is located underneath the intake manifold. To replace it, the complete intake manifold needs to be removed, so the labour cost alone is usually a few hundred Euros. In this case it makes sense to replace the complete manifold.
But if the swirl flaps are moving as shown, all you need is to get the swirl rod fixed. The swirl operating rod is not available separately from the manufacturer though, and all the manufacturer recommends is to replace the complete manifold including the actuator, i.e. a lot of parts that are still working fine. Even in the best cases the costs for this are easily in excess of € 600. Dealerships in Germany have often charged more than € 1000.
That’s why we made SwirlRepair.