This is the rubber oil seal for the outer track rod end. 1966-1980 All Models 1980-1982 Silver Spirit, Silver Spur, & Mulsanne VIN 1001-3819

This is the grease nipple for all track rod ends. All track rods need to be greased. 1955-1965 All Models 1966-1980 All Models 1980-1982 up to VIN CX05667