Porsche Vacuum Advance Rauch & Spiegel 93060291501

The Porsche Vacuum Advance by Rauch & Spiegel, part number 93060291501 (manufacturer reference 462.951), is a precision-engineered aftermarket solution designed specifically for 1980-1983 Porsche 911 SC models (Coupe, Targa, and 1983 Convertible with 3.0L H6 engine, chassis 911). This mechatronic ignition distributor vacuum advance unit employs modern computer-controlled technology, delivering faster and more accurate performance than traditional mechanical double diaphragm units. Each device is accompanied by a certificate of test, showing the precise vacuum advance and retard response on an expanded-scale factory curve, ensuring documented accuracy. Detailed installation instructions are included. Please note: this unit is only for 911 SC models and is not compatible with Turbo versions.