Brake Pump O'ring this is the o'ring that is located on the brake pump housing outlet. 1966-1980 Silver Shadow, T-series, Shadow II, T-2, Silver Wraith II 1980-1995 Silver Spirit, Silver Spur,...

This is the Brake Pump Seal Kit (Before VIN 8427)  After VIN 8427 See RH2897GMF Note: Also will need GMF1023 per pump 1980-1983 (VIN 01001-8427)