This is the starter half clamp that holds the starter drive to the side of the bell housing.   2 Clamps Required Per Car (Sold each) 1945-1955 Silver Wraith, Mk-VI, R-type, Dawn  1955-1959...

This is the idler gear for the starter motor drive. The driven gear is RD7205. Note: This is factory new old stock piece from the factory 1956-1958 Rolls-Royce Cloud I & Bentley S-1

This is the original style push button starter solenoid that is mounted to the frame (engine area) If you want the modern style see RH8312 1946-1969

This is the modern solenoid type starter switch. It replaces the original push-button starter switch (UD4181). This unit does not have the push-button.