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HARRYS EURO - NZ's Largest Online Performance Parts Store
HARRYS EURO – NZ's Largest Online Performance Parts Store
Street Density Transmission Mount Upgrade, B8/B8.5/B9/B9.5 Audi A4/S4/RS4, A5/S5/RS5, Q5/SQ5

Street Density Transmission Mount Upgrade, B8/B8.5/B9/B9.5 Audi A4/S4/RS4, A5/S5/RS5, Q5/SQ5

by 034MOTORSPORT
$183.99
This product is ready to order. Orders will have an estimated 2-week lead time.

Density Line

034Motorsport is proud to offer our Street Density Transmission Mount Upgrade for the B8/B8.5 Audi A4/S4/RS4 and A5/S5/RS5 & B9/B9.5 Audi A4/S4/Allroad & Q5/SQ5! The factory Audi transmission mount assembly features a soft rubber damping medium, which allows for excessive transmission movement at increased power levels, and can break down over time. This movement can be observed as hesitation or lurching when accelerating, decelerating, and shifting.

This high durometer performance mount upgrade is designed to be a direct, drop-in replacement for the factory damping medium, and limit unwanted transmission movement. By reducing slop, this upgrade ensures that you're experiencing crisper shifts and a more connected driving experience. This upgrade will introduce some additional, perceivable increase in noise and vibration transfer into the cabin, especially on vehicles equipped with the Tiptronic transmission.

In addition, the factory transmission mount assembly components are not available separately from dealerships, and premature failure of this mount can result in having to buy the entire assembly. The Street Density Transmission Mount Upgrade from 034Motorsport lets you reuse the factory cast portion when replacing/upgrading the stock mount.

This mount was thoroughly tested by 034Motorsport, and independent Audi enthusiasts before release. Installation is very straightforward, and is completely reversible.

Features:
  • Manufactured from 65 Durometer Rubber
  • Designed to Upgrade Factory Transmission Mount Assembly
  • Engineered to Work in Conjunction with the 034Motorsport B8/B8.5 & B9 Audi Transmission Mount Insert
  • Further Reduces Transmission Movement During Shifting, Acceleration, and Deceleration
  • Improves Shifting Feel & Throttle Response
  • Will Introduce Some Increase in Noise & Vibration Transfer Inside Cabin, Especially on Tiptronic Cars 
  • Straightforward, Fully-Reversible Installation!
What's Included:
  • 034Motorsport Street Density B8/B8.5/B9/B9.5 Audi A4/S4/RS4, A5/S5/RS5, Q5/SQ5 Transmission Mount Upgrade
Installation Instructions:
Installs Into:
  • 8K0 399 151DB / 8K0399151DB
  • 8K0 399 151CD / 8K0399151CD
  • 8K0 399 151BF / 8K0399151BF
  • 8W0 399 156AR / 8W0399156AR
  • 8W0 399 156AQ / 8W0399156AQ

Fitment

Audi | A4 | 2009-2016 | B8/B8.5 | 2.0 TFSI
Audi | A4 | 2009-2016 | B8/B8.5 | 3.2L FSI
Audi | A4 | 2017-Present | B9/B9.5 | 2.0 TFSI
Audi | A5 | 2008-2017 | B8/B8.5 | 2.0 TFSI
Audi | A5 | 2008-2017 | B8/B8.5 | 3.2L FSI
Audi | A5 | 2017-Present | B9/B9.5 | 2.0 TFSI
Audi | allroad | 2010-2016 | B8/B8.5 | 2.0 TFSI
Audi | allroad | 2017-Present | B9/B9.5 | 2.0 TFSI
Audi | Q5 | 2009-2017 | B8/B8.5 | 2.0 TFSI
Audi | Q5 | 2009-2017 | B8/B8.5 | 3.0 TDI
Audi | Q5 | 2009-2017 | B8/B8.5 | 3.0 TFSI
Audi | Q5 | 2009-2017 | B8/B8.5 | 3.2L FSI
Audi | Q5 | 2018-Present | B9/B9.5 | 2.0 TFSI
Audi | RS4 | 2010-2017 | B8/B8.5 | 4.2L FSI
Audi | RS4 | 2018-Present | B9/B9.5 | 2.9 TFSI
Audi | RS5 | 2010-2017 | B8/B8.5 | 4.2L FSI
Audi | RS5 | 2018-Present | B9/B9.5 | 2.9 TFSI
Audi | RSQ8 | 2020-Present | 4M8 | 4.0 TFSI
Audi | S4 | 2010-2017 | B8/B8.5 | 3.0 TFSI
Audi | S4 | 2018-Present | B9/B9.5 | 3.0 TFSI
Audi | S5 | 2008-2012 | B8 | 4.2L FSI
Audi | S5 | 2013-2017 | B8.5 | 3.0 TFSI
Audi | S5 | 2018-Present | B9/B9.5 | 3.0 TFSI
Audi | S8 | 2019-Present | D5 | 4.0L TFSI
Audi | SQ5 | 2012-2017 | B8/B8.5 | 3.0 TDI
Audi | SQ5 | 2012-2017 | B8/B8.5 | 3.0 TFSI
Audi | SQ5 | 2018-Present | B9/B9.5 | 3.0 TFSI
Audi | SQ7 | 2020-Present | 4M/4M.5 | 4.0 TFSI
Audi | SQ8 | 2019-Present | 4M8 | 4.0 TFSI

034Motorsport Install Guide PDF

The installation of your 034Motorsport Street Density Transmission Mount Upgrade, B8/B8.5 Audi A4/S4/RS4, A5/S5/RS5, Q5/SQ5 is a straightforward process that will take approximately one hour to complete. You can access our detailed installation guide by clicking the icon on the left.

 

Download Street Density B8/B8.5 Audi A4/S4/RS4, A5/S5/RS5, Q5/SQ5 Transmission Mount Upgrade Install Guide
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Happy Customers

4.8
Based on 146 Google reviews
as of 01/05/2026
Shanijah Taylor
Shanijah Taylor
Just wanted to share some love to Harry's euro and their team! Bought parts for my r32 and gti, they never disappoint. Love being part of the euro community in an ever so dominant jdm culture in New Zealand. Looking forward to bringing an rs3 in for tuning :)
Greg Davies
Greg Davies
Great to have parts for my Range Rover so readily available in nz. Fast delivery and awesome quality products. Thanks guys!
Nick Ko
Nick Ko
I took my BMW to get the downpipe installed. Harry's Euro has done an excellent job. I'm very satisfied with the quality of their work. The staffs are very nice. Highly recommended. 10/10
Sebastian Ramirez
Sebastian Ramirez
I've been a loyal customer of Harry's Euro since 2017, and I can confidently say Scott and his team are the best in the game. Not only do they consistently offer the best prices, but the service is always top-notch. Scott is honest, transparent, and always takes the time to explain what’s going on with my car. Whether it's routine maintenance, unexpected repairs, or upgrades, I always know my car is in the best hands. Highly recommend to anyone looking for a reliable, expert mechanic!
Andrew Atkinson
Andrew Atkinson
Used Harry's Euro for years owning a Mk6R and now a Mk5 R32. Amazing service and delivery! R32 kit arrived today with some extra goodies! Pleasure to deal with the team!
Mark Barber
Mark Barber
Hands down the best Euro shop in Auckland. They've looked after 2 builds of mine, and the parts, service and expertise has been top notch.
Marc Graham
Marc Graham
Harry's Euros delivered platinum service from start to finish. The quality of the products is excellent, and the install experience was smooth and professional. If you want a lower cost acceleration boost ask Scott about a Pedal Box! Huge difference and very simple to use.
Quinn Ashby
Quinn Ashby
Got some basic servicing and a Stage 2 transmission tune done today to match the ECU tune. The team was really helpful with information, communication via email, fit me in quickly, and offered fair, industry standard pricing for a specialised shop. Highly recommend, and I'll definitely be back!
Hayden Lawrence
Hayden Lawrence
Great service. Needed a replacement driver's side mirror glass for our old GTI. Harry's Euro had it in stock for a good price and shipped it next day. Very pleased with the transaction and will happily recommend and use them again.
SladeDaSlide
SladeDaSlide
Been Working with Harry's Euro for almost 3 years now and I can highly recommend any auto-work or performance upgrades to be done by these guys. I've had my previous car and my current done by the team cheers to Scott and the boys for the work 🍻
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In part 3 of a featured Golf R build series, NZ Performance Car visited the Harrys Euro workshop to explore the realities of Euro tuning. The article highlights our team's expertise, detailing the installation and custom ECU/TCU calibration of the Harrys Euro Stage 2 EA888.3 400 Package.

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