Porsche Vacuum Advance Unit Rauch & Spiegel 93060291000

The Rauch & Spiegel Porsche Vacuum Advance Unit (manufacturer part number 462.910) is a high-precision aftermarket component designed for Porsche 911 SC (1978-1979) Coupe and Targa models with the 3.0L H6 engine. Engineered and individually tested to meet significantly tighter tolerances than original equipment specifications, this unit ensures precise ignition distributor vacuum advance performance. Each unit is supplied with a certificate of test, displaying its unique vacuum/advance response plotted against an expanded-scale factory vacuum advance curve. This product is not an OEM part but is manufactured to rigorous standards for dependable fit and function. OEM reference: 930 602 910 00.