034 Motorsport - Street Density Transmission Mount Upgrade, B8/B9 Audi A4/S4/RS4, A5/S5/RS5 - 034-509-4025
- This product is in stock and ships from a local Australian warehouse.
- Shipping time is approximately same or next business day . Transit time is usually 2-3 days.
- Ships via AUSPOST Express or Couriers Please Express.
034 Motorsport - Street Density Transmission Mount Upgrade, B8/B9 Audi A4/S4/RS4, A5/S5/RS5 - 034-509-4025
The 034Motorsport Street Density Transmission Mount Upgrade replaces the soft factory rubber insert inside the OEM mount assembly. Over time, the stock damping medium wears out, causing excessive transmission movement, hesitation, and sloppy shifts—especially on tuned vehicles.
This insert upgrade uses high-durometer rubber to significantly reduce movement while maintaining daily comfort. Pair it with a 034 Billet Transmission Mount for maximum drivetrain control.
Why Upgrade?
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Factory mount is soft and prone to breakdown
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Excess movement causes lurching, hesitation & sloppy shifts
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This insert provides sharper shifting & a more connected feel
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Direct drop-in replacement for the factory damping medium
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Lets you reuse the OEM housing (dealers do NOT sell the insert separately)
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Some additional NVH may be felt—more noticeable on Tiptronic/auto models
Tested extensively by 034Motorsport and Audi enthusiasts to ensure durability and OE-level fitment.
Replaces Factory Mount Inserts:
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8K0 399 151DB / 8K0399151DB
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8K0 399 151CD / 8K0399151CD
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8K0 399 151BF / 8K0399151BF
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8W0 399 156AR / 8W0399156AR
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8W0 399 156AQ / 8W0399156AQ
Recommended Pairing:
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034 Billet Transmission Mount for maximum stiffness
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034 Street Density Engine Mounts to balance NVH & performance
| Chassis | Model(s) | Years | Transmission |
|---|---|---|---|
| B8 / B8.5 | A4 | 2009–2016 | All |
| S4 | 2010–2017 | All | |
| RS4 | 2013–2017 | All | |
| A5 | 2008–2017 | All | |
| S5 | 2008–2017 | All | |
| RS5 | 2013–2017 | All | |
| Allroad | 2010–2016 | All | |
| Q5 / SQ5 | 2008–2017 | All | |
| B9 / B9.5 | A4 / Allroad | 2017–Present | 7-Speed DCT |
| S4 | 2018–Present | 8-Speed Auto | |
| Q5 | 2018–Present | 7-Speed DCT | |
| SQ5 | 2018–Present | 8-Speed Auto | |
| C8 / 4M+ | RS6 | 2020–Present | 8-Speed Auto |
| RS7 | 2019–Present | 8-Speed Auto | |
| SQ7 | 2020–Present | 8-Speed Auto | |
| SQ8 | 2019–Present | 8-Speed Auto | |
| S8 | 2019–Present |
8-Speed Auto |
SKU: 034-509-4025