This transmission mount perfectly compliments our CT-350 engine mounts for Chevy and GMC trucks. We use our unique polyurethane B200 bushings to isolate engine vibration and keep the engine and transmission securely in place, even under the harshest conditions. This mount fits many GM 4X4 vehicles built from 1980 on, including, S10/S15, Blazers, Yukon, Jimmys, Suburbans, Escalades, and more. So be sure to check your existing mount for fit. The spread on the upper bolts is 7 7/16" and on the lower bolts is 4 3/8". Be sure to confirm these measurements before ordering.