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the holes in the head have worn
High flow 200 cell catalytic converter for full power with reduced pollution
Laser-etched stainless steel logo plate
Protective plating on all metal components
you can install in seconds
Integrated Engineering Performance Valve Guide | VW · Audi | 1.8L Turbo I4 · 2.7L Turbo V6 · 4.2L V8 · 4.2L Turbo V8 MK8 GTI 2.0L Turbo I4 the holes in the headIE performance valve guides directly replace the OE guides providing longevity, reliability, and performance for your cylinder head build. If your cylinder head has had the valve guides replaced previously, it is recommended to confirm the inside diameter of the holes in the cylinder head before installing new guides. In some cases, the holes in the head have worn, requiring valve guides with larger outside diameters to be used. It is common practice
