Chassis Numbers 01001-26705

Rolls-Royce & Bentley suction throttling valve and associated parts for cars from 1965 to 1980 within chassis range 01001 to 26705.

Several alternatives are available when the Suction Throttle Valve requires replacement. The original valve is part number UD11429. UD11429 may be replaced by a reconditioned exchange unit when available, but good core units are becoming rare. It is now more common to replace UD11429 with a replacement kit CD6687 that blanks off the original unit while leaving it in situ, with an electrical switching unit fitted nearby. For those wishing to repair the original valve, there is the option of replacing the Suction Throttle Valve Diaphragm assembly inside the unit, part number CD4900.