Automatic Transmission Mount

What Is an Automatic Transmission Mount?

Automatic transmission mounts are a critical but often overlooked component in your vehicle's drivetrain system. As their name implies, automatic transmission mounts serve a dual purpose: they physically secure the transmission to the vehicle's chassis, and they absorb and dampen the vibration and noise that the transmission generates during operation. A healthy mount keeps your drivetrain properly aligned, protects surrounding components from stress, and prevents that telltale clunking or shuddering that signals something is wrong underneath your vehicle.

Why Transmission Mounts Wear Out

Transmission mounts are constructed from a combination of hardened steel brackets and rubber isolators. Over time, heat cycles, engine torque, and the constant stress of daily driving cause the rubber to harden, crack, or fully separate from the metal housing. When a mount fails, you may notice excessive vibration felt through the floor, a thud when shifting gears, or visible sagging of the powertrain. Catching a worn mount early can prevent more expensive secondary damage to driveshafts, exhaust components, and transmission lines.

What to Look for When Shopping

When replacing an automatic transmission mount, fit and material quality are the two most important factors. Look for mounts that are engineered to meet or exceed OEM specifications, with rubber compounds formulated to the correct durometer (hardness) for your specific application. Steel hardware should be hardened to resist the forces involved. Coverage breadth matters too — a brand with wide vehicle application data is more likely to have the correct mount for your domestic or import vehicle.

Top Brands for Automatic Transmission Mounts

Anchor Industries is widely regarded as the automotive aftermarket's leading name in transmission mounts. Anchor has earned its reputation through a commitment to high-quality manufacturing, full-line coverage, and competitive programs. Their mounts feature rubber material manufactured to specific durometer measurements based on each vehicle's application requirements , and a special Chemlock® bonding agent is used to ensure a superior rubber-to-metal bond.

Westar has been a respected manufacturer in the mount segment since 1986. Westar products are manufactured in ISO 9001/TS169469 certified plants equipped with new generation injection and transfer molding machines. Whether your vehicle uses a rubber, hydraulic, vacuum-assisted, or electronically adjustable mount, Westar offers coverage across a wide range of mount types. Their OE-quality mounts come backed by a 24-month warranty and direct OE fit.

DEA Products rounds out the top tier in this category. DEA Products has been a trusted manufacturer of engine and transmission mounts in the aftermarket industry for over 30 years, with products manufactured using the highest quality of raw materials available. DEA products are designed to replace worn OEM mounts and offer simple bolt-in installation, and are available for most passenger cars, trucks, and SUVs.

Installation Tips

Most automatic transmission mounts are a straightforward replacement job for the experienced DIYer, though some applications may require a floor jack to support the transmission while the old mount is removed. Always verify your part number against your vehicle's year, make, model, and engine before ordering. Many high-quality aftermarket mounts — including those from the brands above — are engineered using CAD/CAM processes to ensure precise form and fit right out of the box.