A Comprehensive Guide to the 2002-2010 Audi A4 Quattro Automatic Transmission Mount
Feeling a clunk or vibration in your Audi? Your automatic transmission mounts might be the cause.
- The most common signs of failure are clunking noises on acceleration and excessive vibration at idle.
- Your A4 Quattro with an automatic transmission requires two mounts, which should be replaced as a pair.
- For longevity and comfort, choose OEM-equivalent brands like Corteco or Febi; budget brands may have a shorter service life.
- Driving with a bad mount can cause damage to other drivetrain and exhaust components over time.
Is Your Audi A4 Quattro's Transmission Mount Failing?
When a transmission mount wears out, the rubber cracks or collapses, and it can no longer do its job effectively. This leads to several noticeable problems. You might hear a distinct "clunk" or "thump" noise when you accelerate, brake hard, or shift from drive to reverse. Another common sign is a new or increased vibration felt in the cabin, through the steering wheel, or in the seats, especially when the car is idling in gear. Some drivers also report that gear shifts feel harsher or less smooth than usual.
Can You Drive with a Bad Transmission Mount?
You can, but it is not recommended for long. While the transmission is unlikely to fall out, the excessive movement puts extra stress on other expensive parts like the engine mounts, driveshaft, CV axles, and exhaust system. Ignoring the problem can lead to more costly repairs down the road.
A Note on Vehicle Generations
The 2002-2010 year range covers multiple Audi A4 generations, primarily the B6 (2002-2005) and B7 (2005.5-2008). The parts discussed are generally for these models. If you own a 2009 or 2010 model (B8 generation), it is critical to verify the specific part number for your vehicle, as the design may be different.
Choosing the Right Aftermarket Mount
When replacing your transmission mounts, you have several options. The quality of aftermarket parts can vary, so it helps to understand the different tiers available.
Tier 1: OEM-Equivalent Brands
These brands are often original equipment (OE) suppliers to Audi and other German automakers, or they are known for producing parts that meet or exceed original specifications. They offer the best fit and durability, closest to what the dealer would sell you.
- Corteco: A well-regarded brand, often considered an OE supplier, known for quality rubber components.
- Febi: Part of the Bilstein Group, Febi is another trusted German brand that often supplies OE parts or high-quality equivalents.
- CRP (Rein): A reliable source for European car parts, often matching OEM quality.
Tier 2: Quality Aftermarket Brands
These brands provide a good balance of quality and value. They are a solid choice for a daily-driven vehicle and offer reliable performance at a lower cost than OEM-equivalent parts.
- Beck Arnley: Known for sourcing parts from various quality manufacturers, often providing a part that is very close to the original.
- Vaico: Generally considered a good value brand with decent quality for standard replacement parts.
- Westar / Pioneer Cable: Standard aftermarket brands that offer a functional replacement for a cost-conscious repair.
Tier 3: Budget-Friendly Brands
These brands focus on being the most affordable option. While they will fit and function, forum discussions suggest they may use harder rubber compounds or have a shorter service life compared to higher-tier brands. They can be a viable option if the budget is the primary concern.
- URO Parts: Often the most affordable choice, but online reviews frequently mention a shorter lifespan for their rubber products.
- Anchor / DEA Strut: These are well-known budget brands in the mount category.
Typical Replacement Costs
The cost can vary based on the brand you choose and whether you do the work yourself or have a professional mechanic do it.
| Part / Service | Estimated Cost |
|---|---|
| New Aftermarket Mounts (Pair) | $50 - $215 |
| New OEM Mounts (Pair) | $240 - $380 |
| Shop Labor | $150 - $300 |
| Total Professional Replacement (Aftermarket) | $200 - $515 |
Frequently Asked Questions
How many transmission mounts does my A4 Quattro need?
The automatic (Tiptronic) versions of the 2002-2008 Audi A4 Quattro use two transmission mounts, one on the left and one on the right side of the transmission. They are typically sold individually but should be replaced in pairs.
Can I upgrade my transmission mounts?
Yes, performance-oriented brands like 034Motorsport and CTS Turbo offer upgraded "Street Density" or solid billet mounts. These are much stiffer than the stock rubber mounts and are designed to eliminate almost all drivetrain movement for better throttle response and shifting feel. The trade-off is a noticeable increase in noise, vibration, and harshness (NVH) inside the car. For a daily driver, sticking with a quality OEM-style rubber mount is usually best for comfort.
What happens if I don't replace a bad mount?
A failed mount allows the heavy transmission to move and vibrate excessively. This puts significant strain on other components, including the engine mounts, driveshaft center support bearing, CV joints, and even the exhaust system. What starts as a relatively simple and inexpensive fix can lead to a cascade of other, more expensive problems if ignored.
Is the left mount the same as the right mount?
For the Tiptronic automatic transmission in this year range, the left and right mounts are typically identical and use the same part number. However, it is always a best practice to verify the part numbers for your specific vehicle before ordering to ensure a perfect fit.
Technical Specifications
OEM Part Numbers: 8E0399105HP
Audi A4 Quattro models with the Tiptronic automatic transmission require two (2) transmission mounts. Manual and CVT transmission vehicles use a different mount configuration.
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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.
- Audi A4 Quattro:
- 🛍️ Shop This Part
- Is Your Audi A4 Quattro's Transmission Mount Failing?
- Can You Drive with a Bad Transmission Mount?
- A Note on Vehicle Generations
- Choosing the Right Aftermarket Mount
- Tier 1: OEM-Equivalent Brands
- Tier 2: Quality Aftermarket Brands
- Tier 3: Budget-Friendly Brands
- Typical Replacement Costs
- Frequently Asked Questions
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