Uprated exhaust manifold stud kit for TD5, designed to help eliminate studs breaking off in the cylinder head.
This is often due to manifold warping typically made apparent by a high pitched ‘squeal’ under heavy acceleration.

These studs are made with a higher grade material, are longer and are supplied with expansion spacers and new flange nuts .
The nuts should be tightened to 25nm (18lbf.ft).