Honda Accord Automatic Transmission Mount Guide (2014-2018)
Experiencing clunks or vibrations in your Accord? It might be a failing transmission mount.
- Symptoms of a bad mount include clunking noises when shifting and excessive vibration.
- OEM mounts offer the smoothest ride but are expensive; aftermarket mounts are cheaper but may increase cabin vibration.
- For this specific vehicle, many owners strongly recommend using OEM mounts to avoid vibration issues.
- Replacement is a feasible DIY job but requires safely supporting the transmission.
Is Your Accord Shaking or Making Clunking Noises?
If you're noticing new vibrations or hearing strange noises, a worn-out automatic transmission mount could be the culprit. These mounts are made of rubber and metal and are designed to absorb vibration while holding your transmission in place. Over time, the rubber can crack, tear, or become saturated with leaking fluids, causing the mount to fail. When this happens, the transmission can move around too much, leading to several noticeable symptoms.
Symptoms of a Bad Transmission Mount
A failing transmission mount will give you clear warning signs. Ignoring them can lead to more stress on other parts like axles, hoses, and the other drivetrain mounts. Look out for these common symptoms:
- Excessive Vibration: This is the most common sign. You might feel a strong vibration through the floor, seats, or steering wheel, especially when the car is idling in gear or during acceleration.
- Clunking or Banging Noises: A loud "clunk" or "thud" when you shift from Park into Drive or Reverse is a classic symptom. You may also hear these noises during hard acceleration or braking as the transmission shifts and hits the frame.
- Rough Shifting: While less common, a severely failed mount can cause the transmission to be misaligned, potentially leading to harsh or difficult gear changes.
- Visible Movement: If you can safely have a helper put the car in gear while you watch the engine bay (with the parking brake on and foot firmly on the brake), you might see the engine and transmission rock back and forth excessively. 🎬 Watch this step-by-step diagnostic video to see bad mounts in action
OEM vs. Aftermarket Mounts: An Honest Look
For many parts, aftermarket is a great value. For Honda engine and transmission mounts, the choice is more complex. The original factory (OEM) mounts are specifically designed to absorb the unique vibrations of your Accord's engine and transmission. Many owners and mechanics report that even high-quality aftermarket mounts can introduce a noticeable vibration into the cabin that wasn't there before. Some owners who choose budget aftermarket options report them failing in less than a year and end up buying the OEM part anyway. However, some find that the transmission mounts are less sensitive to this than the main engine mounts.
- OEM (Original Equipment Manufacturer): Highest cost, but provides the original smooth, vibration-free performance and longest lifespan.
- Premium Aftermarket: Mid-range price. Brands may offer a good balance but still risk a slight increase in vibration compared to a new OEM part.
- Budget Aftermarket (e.g., Anchor, DEA, Westar): Most affordable. These are often solid rubber pucks that get the job done of holding the transmission, but they are the most likely to transfer vibrations into the car. Fitment can also sometimes be an issue with lower-cost brands.
Pro Tip: If your budget is tight, some owners have had success using an aftermarket transmission mount while insisting on an OEM part for the main, fluid-filled engine mounts, which are more sensitive.
Choosing the Right Aftermarket Mount
If you decide an aftermarket mount is right for you, understand that you are often trading a lower price for a potential increase in noise, vibration, and harshness (NVH). The brands available in our inventory—Anchor, DEA, and Westar—are well-known budget-friendly options. They are functional replacements but are generally not expected to provide the same level of damping as the original Honda part. For a daily driver, this trade-off might be acceptable for the significant cost savings.
Cost to Replace a Transmission Mount
| Part/Service | Estimated Cost |
|---|---|
| New OEM Part | $160 - $325 |
| New Aftermarket Part | $50 - $210 |
| Shop Labor | $93 - $137 |
| Total Professional Replacement | $250 - $460+ |
Frequently Asked Questions
Can I drive with a bad transmission mount?
You can, but it's not recommended for long distances. A failed mount puts extra stress on your other mounts, CV axles, exhaust system, and various hoses and wires. The excessive movement can cause these other parts to fail prematurely, leading to more expensive repairs.
How many transmission mounts does my 2014-2018 Accord have?
The 2.4L 4-cylinder models typically have an upper and a lower transmission mount 🎬 See how to replace the upper driver side transmission mount on the driver's side, in addition to the other engine mounts. The V6 models have a similar setup. It's common to replace them as a set if one has failed.
Is replacing a transmission mount a DIY job?
Yes, for someone with mechanical experience and the right tools. The job requires safely supporting the engine and transmission with a floor jack and a block of wood. Accessing the bolts can be tight. If you are not comfortable working under your car and supporting the drivetrain, it's best to leave this job to a professional.
🎬 Watch this guide to replacing the lower driver side transmission mountWere there any recalls for the transmission mounts on these Accords?
Based on searches of the NHTSA database and other public records, there are no specific recalls or technical service bulletins (TSBs) for the automatic transmission mounts on the 2014-2018 Honda Accord.
Helpful Videos
Technical Specifications
OEM Part Numbers: 50870-T2F-A02 50850-T2F-A01 50850-T3Z-A01
The 2014-2018 Accord (2.4L 4-Cylinder) uses at least two primary automatic transmission mounts: an upper mount (OEM #50870-T2F-A02) and a lower mount (OEM #50850-T2F-A01). The Hybrid model uses a different lower mount (OEM #50850-T3Z-A01). V6 models may use different part numbers. Always verify the part number with your vehicle's VIN.
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.
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