Mercedes W123 240D, 300D, 300CD, and 300TD Firewall Throttle Bushing Upgrade 

For 1981 to 1985 Models Only Link: mercedessource.... Designed by Kent Bergsma and made in the U.S.A. The original bushing turns brittle with age and breaks apart, leaving you with a sloppy throttle response - you may not even get full throttle.