A Guide to Replacing the Automatic Transmission Mount on a 2005-2008 Audi A4 (B7)
Eliminate drivetrain vibrations and clunking noises by choosing the correct new aftermarket transmission mount for your A4.
- Verify your car is a B7 platform (2005.5-2008), not the later B8 (2009+), as the parts are different.
- Confirm if your A4 has a Tiptronic or CVT automatic transmission and order the correct mount.
- For a balance of quality and value, choose OEM-style brands like Febi or Vaico over budget brands.
- Replacing mounts in pairs is highly recommended for even support and to avoid repeating the job soon.
Important: Check Your A4 Generation Before Buying
The 2005-2010 year range for the Audi A4 covers two different vehicle generations: the B7 platform (2005.5-2008) and the B8 platform (2009-2010). These two generations use different chassis and parts. The transmission mounts are NOT interchangeable between them. This guide focuses on the B7 platform. Double-check your vehicle's model year before ordering any parts.
Symptoms of a Failing Transmission Mount
When a transmission mount fails on the A4, the symptoms are hard to ignore. The original fluid-filled mounts are great for comfort when new, but once they leak or the rubber collapses, the transmission can move excessively. Here’s what you might experience:
- Excessive Vibration: You may feel a noticeable vibration through the floor, seats, or steering wheel. This is often most apparent when the car is idling in gear, accelerating, or braking.
- Clunking or Banging Noises: A loud "clunk" when you shift from Park to Drive or Reverse is a classic sign. You might also hear knocking sounds during acceleration or deceleration as the transmission shifts its weight.
- Rough Shifting: While less common, a completely failed mount can cause poor drivetrain alignment, leading to a rough or jerky feeling when the transmission shifts gears.
Choosing the Right Aftermarket Part: Brand Quality Tiers
Not all aftermarket mounts are created equal. For a German car like the Audi A4, the quality of the rubber and design directly impacts ride quality and longevity. Here’s how the available brands generally stack up based on owner experiences and material quality.
Pro Tip: Many aftermarket mounts for the A4 are solid rubber instead of fluid-filled like the original. These are more durable and provide a slightly crisper shifting feel, but may transmit minor vibrations at idle compared to a brand-new OEM mount. For most drivers, this trade-off for durability is well worth it.
Tier 1: OEM Quality (Good)
These brands are known for producing parts that meet or exceed original equipment specifications. They are the best choice for owners who want to restore the original ride quality and feel without paying dealer prices.
- Febi: A well-respected German brand that often supplies parts directly to automakers. Their mounts are engineered to match the fit and damping properties of the original.
- Vaico: Another German brand known for high-quality replacement parts, often designated with a "Q" for OEM-level quality. A solid choice for fit and durability.
Tier 2: Reputable Aftermarket (Better)
This brand offers a reliable product that balances cost and quality. It's a dependable option for a daily-driven vehicle.
- Beck Arnley: Beck Arnley specializes in parts for foreign nameplate vehicles and sources their components from various global manufacturers to match the OE part. They aim to provide an OE-equivalent part in form, fit, and function.
Tier 3: Economy (Budget)
These brands compete primarily on price. While they will fit and function initially, forum discussions and reviews suggest they often use harder rubber compounds and less robust construction, which can lead to poor vibration absorption and a shorter lifespan. Consider these if budget is the absolute primary concern.
- Anchor
- Westar
- DEA
- Pioneer Cable
Cost to Replace an Audi A4 Transmission Mount
| Part Type | Price Range |
|---|---|
| New Aftermarket Mount | $36 - $107 |
| New OEM Mount | $150 - $250 |
| Shop Labor | $150 - $250 |
Frequently Asked Questions
Is replacing a transmission mount a DIY job?
Yes, for a moderately skilled DIYer. The job requires safely lifting the front of the car on jack stands, supporting the transmission with a floor jack, and removing a few bolts. It typically takes about an hour or two. You will need basic metric sockets, a T45 or T47 Torx bit, and wrenches.
Do I need to replace mounts in pairs?
The B7 A4 with an automatic Tiptronic transmission uses two mounts. While you can replace only the one that has failed, it is highly recommended to replace them in pairs. If one has failed due to age and mileage, the other is likely not far behind. Replacing both at the same time ensures even support and damping.
Will a new aftermarket mount make my car vibrate more?
It depends on the brand. A high-quality solid rubber mount from a brand like Febi or Vaico should provide damping very close to the original. Performance-oriented mounts will noticeably increase vibration in the cabin. Low-quality economy mounts may also cause more vibration due to harder, less compliant rubber.
What's the difference between Tiptronic and CVT mounts?
The Tiptronic (a traditional automatic, usually found on Quattro models) and CVT (Continuously Variable Transmission, usually on Front-Wheel Drive models) can use different transmission mounts. It is critical to verify which transmission your A4 has and order the specific part listed for it. Check the fitment notes on the product page carefully.
Helpful Videos
Technical Specifications
OEM Part Numbers: 8E0399105HP 8E0399105JD 8E0399105CL 8E0399105EL
The Audi A4 B7 uses two rear transmission mounts for the automatic (Tiptronic) transmission. They are typically a rubber-metal construction, with the OEM version being fluid-filled (hydraulic). Aftermarket versions are often solid rubber. The CVT transmission uses 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:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Important: Check Your A4 Generation Before Buying
- Symptoms of a Failing Transmission Mount
- Choosing the Right Aftermarket Part: Brand Quality Tiers
- Tier 1: OEM Quality (Good)
- Tier 2: Reputable Aftermarket (Better)
- Tier 3: Economy (Budget)
- Cost to Replace an Audi A4 Transmission Mount
- Frequently Asked Questions
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