Engine Exhaust Valve Macan 2017 2018 THCAB 78557 00 but safe enough for your Select Tip Option::Long (2002 2004) Tips Polished Stainless Steel but safe enough for your clothes and washing machine •Cooler Temperatures To Reduce Brake Fade And Increase Disc And Pad Life •Reusable Hats For Lower Disc Replacement Costs •Full Floating 2 Piece Assemblies With Billet Aluminum Hats For Lighter Weight •Save Up To 16 Pounds Per Car In Un Sprung Weight To Improve Handling •Low Cost Direct Replacement For PCCB Equipped Cars Premium engine exhaust valve specifically designed for Porsche engines ensuring proper compression and preventing power loss while extending your Porsche engine's lifespan under demanding driving conditions