Bushings Inc. DF238-M1 Diesel Engine Mount. Adjustable Vertically to facilitate engine prop shaft alignment. The rubber element of the mount will withstand temperature extremes and exposure to salt, oil and grease. Holds loads up to 550-lbs. Base is 6-1/2" x 3-3/8". 2-7/10" from bottom of mount to lowest adjustment point. 5" from bottom of mount to top of 3/4-18 stud. Mounting holes accept 1/2" bolts, holes are 5" center to center.