Engine Timer Shutdown Knob for Peterbilt Blue Jewel Chrome Plastic UP#41258 Each

THIS CHROME PLASTIC PIECE FITS KENWORTH AND PETERBILT ENGINE TIMERS. IT IS THE REPLACEMENT KNOB. IT IS 1 3/8" IN DIAMETER WITH A 9/16" WIDE JEWEL AND 5/8" THICK. IT IS CHROME PLASTIC WITH A JEWEL IN THE CENTER. NEW. BULK PACKAGING.