A Comprehensive Guide to the 1979-1986 Mercury Capri Automatic Transmission Mount
Stop the clunking and excess vibration by choosing the right new transmission mount for your Capri.
- A loud 'clunk' when shifting is the most common sign of a failed mount.
- Choose a standard rubber mount (DEA, Westar) for a quiet ride or a polyurethane mount (Prothane) for performance and durability.
- This is a highly feasible DIY project that can be completed in 1-2 hours with basic tools.
- A bad transmission mount puts extra stress on engine mounts and the driveshaft; inspect them at the same time.
Is Your Capri's Transmission Mount Failing?
The transmission mount on the 1979-1986 Mercury Capri is a simple but essential part. Because these cars share their Fox Body platform with the Ford Mustang, information and parts are readily available. Over decades of use, the original rubber mount can dry rot, crack, or become saturated with oil, leading to failure. When it fails, you'll notice some distinct problems.
Common Failure Symptoms
- Clunking Noises: A loud "clunk" or "bang" when you shift from park to drive or reverse is the most common sign. This is the sound of the transmission lifting and hitting the underbody of the car.
- Excessive Vibrations: If the rubber in the mount is worn out, it can no longer dampen vibrations from the engine and transmission. You may feel these new vibrations through the floor and seats, especially at idle or during acceleration.
- Drivetrain Movement: In severe cases, the gear shifter might move during hard acceleration. A mechanic can easily spot a bad mount by lightly power-braking the vehicle and watching for excessive engine and transmission movement.
Why You Shouldn't Wait
Driving with a failed transmission mount is not recommended for long. While it may not stop the car immediately, it puts significant stress on other parts like the engine mounts, driveshaft U-joints, and exhaust system. Fixing it sooner rather than later can prevent more expensive repairs down the road.
Choosing the Right Aftermarket Mount
Since genuine Ford OEM parts for this vehicle are likely no longer available, the aftermarket is your go-to source. For the Capri, you have two main choices: standard rubber replacements or performance-oriented polyurethane mounts.
Brand & Quality Tiers
- Standard Replacement (Good): Brands like Westar and DEA offer direct, OE-style rubber mounts. These are designed to restore the original ride quality and are the most affordable option. They provide good vibration absorption for daily driving. However, quality can sometimes be inconsistent with budget brands.
- Performance Polyurethane (Better): A Prothane mount is a significant upgrade in durability. Made from polyurethane instead of rubber, it's much stiffer and resistant to oil and chemicals. This controls torque and reduces drivetrain flex, which is great for performance driving. The trade-off is a noticeable increase in cabin vibration and noise (NVH).
Pro-Tip: Rubber or Polyurethane?
If your Capri is a daily driver and you value a smooth, quiet ride, stick with a standard rubber mount from a brand like Westar or DEA. If you have a modified engine or use your car for performance driving and don't mind extra vibration, a Prothane polyurethane mount is the stronger, more durable choice.
Cost to Replace a Transmission Mount
This is one of the more affordable repairs you can make. The parts are inexpensive, and labor is straightforward.
| Item | Cost Range |
|---|---|
| Aftermarket Rubber Mount (e.g., DEA, Westar) | $18 - $30 |
| Aftermarket Polyurethane Mount (e.g., Prothane) | $45 - $55 |
| Estimated Shop Labor | $100 - $200 |
| Estimated Total (DIY) | $18 - $55 |
| Estimated Total (Shop) | $118 - $255 |
Frequently Asked Questions
Can I replace the transmission mount myself?
Yes, this is a very DIY-friendly job for someone with basic tools. The process involves safely supporting the vehicle on jack stands, supporting the transmission with a floor jack and a block of wood, unbolting the transmission crossmember, and swapping the mount. It typically takes 1-2 hours.
What's the difference between rubber and polyurethane?
Rubber is softer and provides better vibration isolation for a comfortable ride. Polyurethane is a much stiffer plastic that offers superior strength and longevity, but it transmits more vibration and noise into the car's cabin.
Are there any recalls on the 1979-1986 Capri transmission mount?
No. Searches of the National Highway Traffic Safety Administration (NHTSA) database show no recalls or technical service bulletins (TSBs) specifically for the transmission mount on the 1979-1986 Mercury Capri. There were recalls for transmission fluid leaks on other Capri model years, but not for the mount itself.
Should I replace my engine mounts at the same time?
It's a great idea to inspect them. A failed transmission mount puts extra stress on the engine mounts, and vice-versa. If they are cracked, collapsed, or oil-soaked, replacing them all at once is wise and will save you from doing a similar job again soon.
Technical Specifications
OEM Part Numbers: E0ZZ-6068-A D9ZZ-6068-A
The mount is a single-stud design that bolts to the transmission crossmember. The crossmember itself is shared with the 1979-1993 Ford Mustang (Fox Body), making parts interchangeable.
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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.