Porsche Vacuum Advance Rauch & Spiegel 93060290300

The Porsche Vacuum Advance by Rauch & Spiegel, part number 93060290300 (manufacturer part number 462.903), is an aftermarket replacement designed specifically for the 1976–1977 Porsche 911 Turbo Carrera (chassis 930, 3.0L H6 coupe). This component meets stringent manufacturing and testing standards, exceeding original equipment published specifications with much tighter tolerance bands.

Each unit is individually tested, accompanied by a certificate of test that details its unique vacuum/advance response plotted against an expanded-scale factory vacuum advance curve. This ensures precise ignition distributor function, promoting optimal engine performance and reliability for your classic 911.