1984 Mack DM Series Replacement Shift Knobs
- Dorman HD Solutions®Heavy Duty Air Shift KnobMack DM Series 1984, Heavy Duty Air Shift Knob by Dorman HD Solutions®. Dorman's Air Shift Knob restores functionality of alternating ranges and gears. Often fails due to lack of maintenance and breakage, this Shift Knobs is constructed...Direct replacement for a proper fitEasy to install$30.46 - $58.46