A Practical Guide to the 1973-1977 Mercury Montego Automatic Transmission Mount
Stop the clunking and shaking by choosing the right new transmission mount for your classic Montego.
- Symptoms of a bad mount include clunking noises when shifting, excessive vibration, and a feeling of movement from the drivetrain.
- Aftermarket parts are the only realistic option; brands like Anchor, DEA, and Westar are standard replacements, while Pioneer is a quality alternative.
- This is a simple DIY job for owners with a jack, jack stands, and basic tools.
- Always inspect your engine mounts when replacing the transmission mount, as they wear out at a similar rate.
Is Your Montego's Transmission Mount Failing?
A transmission mount is made of rubber and metal. After decades of use, the rubber gets hard, cracks, or gets soaked with oil, causing it to fail. When this happens, you'll notice some clear signs. Ignoring them can lead to more stress on other parts like your engine mounts and driveshaft.
Common Symptoms of a Bad Mount:
- Clunking or Banging Noises: The most common sign is a loud clunk when you shift from park into drive or reverse. You might also hear it when you accelerate or brake hard. This is the sound of the transmission moving around and hitting the frame.
- Excessive Vibrations: If you feel new or heavy vibrations in the floor or seat, especially while idling or accelerating, your old mount is likely not absorbing them anymore.
- Drivetrain Movement: You might feel the whole engine and transmission assembly shift during acceleration. In some cases, a trusted helper can look at the engine while you briefly put the car in gear (with the brake held down firmly) to see if there is excessive movement.
Platform Twin: The Ford Torino
The 1973-1977 Mercury Montego shares its chassis and many of its mechanical parts with the Ford Torino. When searching for parts or troubleshooting advice, information for the Ford Torino of the same years is often directly applicable to your Montego.
Choosing the Right Aftermarket Mount
For a vehicle of this age, finding a new original Ford (OEM) part is nearly impossible. The market for the 1973-1977 Montego is served entirely by aftermarket manufacturers. These parts are designed to fit and function like the original and represent a good value. Here’s a look at the available brands.
Standard Replacement Brands: Anchor, DEA, Westar
Anchor, DEA, and Westar are common, budget-friendly brands that offer standard replacement mounts. For a classic car with stock power, these mounts are generally considered adequate. Forum discussions show mixed opinions; some users have success with them, while others have noted occasional issues with fitment or a shorter lifespan compared to original parts. They are a practical choice if your priority is getting the car back on the road at a low cost.
Enhanced Quality Aftermarket: Pioneer
Pioneer Automotive Industries is often seen as a step up in quality. They market their parts as being tested for fit and made to meet or exceed original specifications. If you are willing to spend a few extra dollars for potentially better materials and a more precise fit, Pioneer is a solid option.
Pro Tip: Replace Mounts in Sets
If your transmission mount has failed, your engine mounts have endured the same age and stress. It is highly recommended to inspect and likely replace the two engine mounts at the same time you replace the transmission mount. This restores the entire drivetrain support system and prevents a new mount from failing prematurely due to worn-out partners.
Aftermarket Transmission Mount Cost
| Part Type | Typical Price Range |
|---|---|
| New Aftermarket Mount | $16.68 - $21.79 |
| Shop Labor | $150 - $250 |
Frequently Asked Questions
Can I replace the transmission mount myself?
Yes, this is a very DIY-friendly job for a 1973-1977 Montego. The process involves safely lifting and supporting the vehicle, using a floor jack and a piece of wood to support the transmission, unbolting the old mount, and installing the new one. It requires basic hand tools and should take about one to two hours.
How long will a new aftermarket mount last?
A new aftermarket mount should last for many years and tens of thousands of miles under normal driving conditions. The biggest threats to a mount's lifespan are high mileage, hard acceleration, and exposure to engine oil or other fluids, which can degrade the rubber.
Is a transmission mount the same as an engine mount?
No, they are different parts but do a similar job. Your Montego has two engine mounts that support the engine at the front, and one transmission mount that supports the transmission at the rear. Together, they hold your entire drivetrain in place.
What happens if I don't replace a bad mount?
While the car is generally drivable with a bad mount, you shouldn't ignore it. The constant clunking and vibration will put extra stress on your engine mounts, driveshaft U-joints, exhaust system, and even transmission seals, potentially leading to more expensive repairs down the road.
Are there any recalls for the Montego transmission mount?
No, there are no known recalls or technical service bulletins (TSBs) from the NHTSA for the automatic transmission mount on the 1973-1977 Mercury Montego.
Technical Specifications
Rear automatic transmission mount for Ford C4, C6, or FMX transmissions typically found in this vehicle.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.