Porsche 911 930 (75-86) Gear Shift Knob Retainer Retainer Ring (Crush Ring) for Gear Shift Knob part# (999 532 003 00). Recently made GENUINE PORSCHE part. Fits: (1975-1986): 911 Fits: (1976-1986): 911 turbo Fits: (1976-1976): 912e