Acura TL Automatic Transmission Mount: 2008-2014 Replacement Guide
Stop excessive vibrations and clunking noises by understanding and replacing your TL's transmission mount.
- Excessive vibration at idle while in gear is the number one sign of a failed transmission mount on a TL.
- OEM mounts are highly recommended by owners for their superior vibration damping and longevity compared to aftermarket options.
- The 2008 model and 2009-2014 models use different parts; verify the correct part for your year before ordering.
- Consider inspecting and replacing engine mounts at the same time, as a single failed mount puts stress on all others.
Is Your Acura TL Vibrating or Clunking? It Could Be a Bad Transmission Mount
If you're feeling a harsh vibration through the steering wheel and seats, especially when the car is in gear at a stoplight, a failing transmission mount is a likely suspect. These mounts are made of metal and rubber and are designed to wear out over time. The rubber cracks and collapses, and it can no longer absorb the vibrations from the drivetrain. This is a very common issue on the Acura TL as it ages.
A Note on Model Years: 2008 vs. 2009-2014
It is important to know that the 2008 Acura TL (part of the 3rd generation) and the 2009-2014 Acura TL (4th generation) are different vehicles and use different transmission mounts. This guide covers the entire 2008-2014 range, but you must ensure you are purchasing the correct part for your specific year. Ordering the wrong part is a common mistake.
Symptoms of a Failing Transmission Mount
- Excessive Vibration: This is the most common symptom. You'll feel it at idle, in gear, and during acceleration.
- Clunking or Banging Noises: You may hear a distinct 'clunk' when you shift from Park to Drive/Reverse, or during acceleration and braking. This is the sound of the transmission moving and hitting other components.
- Rough Shifting: A worn mount can cause the transmission to be misaligned, leading to a jerky or harsh feeling when the car shifts gears.
- Visible Movement: If you have a helper, you can observe the engine and transmission while shifting between gears (with the brake firmly applied). Excessive rocking or lifting is a clear sign of a bad mount.
OEM vs. Aftermarket: An Honest Assessment
For the Acura TL, there is a significant difference in quality and performance between Original Equipment Manufacturer (OEM) and aftermarket mounts. Forum discussions with long-time TL owners are nearly unanimous: OEM mounts provide the best performance and longevity. They are specifically designed to dampen the TL's engine vibrations for a smooth, factory-like ride. Aftermarket mounts from brands like Anchor, DEA, and Westar are much more affordable but are often reported to cause new, different vibrations or fail within a year. If your budget allows, OEM is the recommended choice for this specific part to avoid doing the job twice.
Choosing the Right Aftermarket Part
If you decide an aftermarket part is the right choice for your budget, it's important to understand the trade-offs. These mounts will secure your transmission, but they may not provide the same level of vibration absorption as the original part.
- Value Tier (Anchor, DEA, Westar): These brands offer the most budget-friendly options. They are a functional replacement to fix a completely failed mount but may result in more noticeable cabin vibration compared to OEM. Some users report fitment issues requiring modification.
- When to Choose Aftermarket: An aftermarket mount can be a good choice if you are on a strict budget, planning to sell the vehicle soon, or if the current vibration and noise from your completely broken mount are your only concern.
Pro Tip: Inspect Your Engine Mounts Too
The Acura TL has a total of five mounts (3 engine, 2 transmission) for the automatic model. When one mount fails, it puts extra stress on the others, causing them to wear out faster. It is highly recommended to inspect all your mounts and replace them as a set if they are old or show signs of wear.
Estimated Costs
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Mount | $35 - $78 |
| New OEM Mount | $65 - $200+ |
| Shop Labor | $100 - $250 |
Frequently Asked Questions
How many transmission mounts does my Acura TL have?
The automatic transmission models from 2008-2014 typically have two transmission mounts, often referred to as an upper and a lower mount. This is in addition to the three engine mounts.
Can I replace just the one broken mount?
Yes, you can replace only the failed mount. However, it is a strong recommendation from mechanics and experienced owners to replace the mounts in sets. A new, stiff mount paired with old, worn mounts can accelerate the failure of the remaining old mounts.
Is this a difficult job to do myself?
Replacing the transmission mounts is a moderately difficult job that is feasible for a DIY mechanic with the right tools. It requires supporting the transmission with a jack, removing bolts that may be hard to reach, and maneuvering the new mount into place. If you are not comfortable working under your car and supporting the drivetrain, it is best to leave this job to a professional.
Are there any recalls for the transmission mounts?
No, there are no specific recalls for the transmission mounts on the 2008-2014 Acura TL. Problems with the mounts are considered normal wear and tear. There was a recall for a power steering hose and other unrelated issues on some of these models.
Technical Specifications
OEM Part Numbers: 50870-SEP-A92 (2008) 50870-TK4-A01 (2009-2014 2WD Upper) 50870-TK5-A01 (2009-2014 4WD Upper) 50850-TK4-A02 (2009-2014 Lower)
The system consists of multiple mounts securing the engine and transmission. The automatic transmission typically uses an upper and a lower mount. These are composed of a metal frame and a solid or liquid-filled rubber insulator to absorb vibration and withstand engine torque.
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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.
- Acura TL:
- 🛍️ Shop This Part
- Is Your Acura TL Vibrating or Clunking? It Could Be a Bad Transmission Mount
- A Note on Model Years: 2008 vs. 2009-2014
- Symptoms of a Failing Transmission Mount
- OEM vs. Aftermarket: An Honest Assessment
- Choosing the Right Aftermarket Part
- Pro Tip: Inspect Your Engine Mounts Too
- Estimated Costs
- Frequently Asked Questions
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