Seller notes

Brand New Supertech Performance Bronze Valve Guides Fits 2018-2020 Audi TTRS - 20v 2.5L - DAZA Engines Set of (20) Part # GDE-AU18tThe Supertech Valve Guides are precision-machined from high quality Manganese Bronze material. These guides in combination with our low friction black nitride valves provides the best solution for performance and durability.Interference fit in the cylinder head should be about 0.04mm (0.0015"). Inner bore needs to be honed after installation Please ask any questions ...

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