I've been told by my mechanic that I need a new cylinder head for my 55 plate TDI which has done 150K miles but the price Audi quoted was pretty much what the car is worth !!!. Apparently this engine head does have a tendency to fail after high mileage and I was wondering if anyone else has had this problem and, if so, can they recommend a reliable supplier of quality replacement cylinder heads please ???.

Any help much appreciated please as I've been off the road for quite a while now.