The factory accelerator linkage assembly in your 1st gen 12 valve Cummins can wear out and become loose, adversely affecting the way your truck reacts when you press the accelerator pedal. This can not only be annoying but also dangerous if you are trying to pull out into traffic and this linkage breaks. Replace your failed linkage with an OEM Cummins Replacement Throttle Linkage Rod. This is a direct replacement part and will restore your throttle operation back to factory specifications.