Motor Mounts & Mounting Hardware

Motor mounts have two important jobs: They dampen the noise and vibration that is a product of normal engine operation, and support and locate the engine (and transaxle on front-wheel drive vehicles) in the chassis. Isolating noise and vibration from the chassis is important for driving comfort, but keeping the engine in its designed position is even more critical for safe vehicle operation and to prevent component breakage.

The traditional motor mount consists of two pieces of metal that attach to the engine and chassis respectively, separated by a rubber insulator. Some vehicles have fluid filled hydraulic, or “hydromounts”, that can absorb more vibration without allowing excessive engine movement. The most advanced engine mounts are electronic “active” mounts that are soft at idle to absorb more vibration, but stiffen at higher rpm to limit engine motion.

Motor mounts can fail due to age and exposure to heat and fluids like oil. Rubber mounts can become spongy and “sacked”, or split apart and separate from the metal mounting plates, and hydraulic mounts can leak fluid. If you experience unusual noise and vibration, visually inspect the mounts, and use a pry bar and/or floor jack to unload each mount while checking for damage. Diagnosing active motor mounts may require a scan tool or other equipment, depending on the system. Some vehicles use vacuum operated active mounts and the integrity of these mounts can be checked with a hand-held vacuum pump.

Regardless of the failure or type of motor mount, we have the replacements to restore smooth and safe vehicle operation. We also offer polyurethane motor mounts for all popular vehicles that are much firmer than OE mounts, and much tougher. These durable mounts are impervious to heat, oil, coolant and road salt. Depending on the vehicle, you may experience increased vibration with these mounts. But if performance is your goal, you’ll get more power to the ground with no wheel hop, plus improved throttle response, because your engine and driveline will be held firmly in place. And on some vehicles you may even experience an overall increase in vehicle rigidity, which can improve handling as well.

If you’re racing and need the ultimate in stiffness, we also offer solid steel motor mounts for many applications. We also have other motor mount products including shims to adjust engine height, universal mounts that are perfect for mounting many popular engines in projects like street rods, and mounts designed specifically for engine swaps. Our engine swap mounts have been engineered to allow the installation of many popular powerplants into different chassis, making it easy to repower a classic with a modern engine or upgrade a horsepower challenged driveline with V8 power.