CTS Turbo B8/B9/C8/4M Audi A4/S4/A5/S5/RS5/RS6/Q5/SQ5/SQ7/SQ8 Sport Transmission Mount

CTS Turbo is proud to announce the release of the B8/B9/C8/4M Audi A4/S4/A5/S5/RS5/RS6/Q5/SQ5/SQ7/SQ8 Sport Transmission Mount. This mount upgrade is designed to enhance the performance and power delivery of your Audi with a stiffer 65A durometer rubber mount replacement. This increases torque transfer, especially as you increase power above the levels the stock mount wasn't meant to handle.  This will decrease the extra movement and deflection when you put the power down, increasing overall drivability and enhancing performance. The best part is our Sport Transmission Mount is a direct drop-in upgrade! Effectively mitigate the shortcomings of the factory mount by providing enhanced stability to the transmission mount assembly. You can expect, improved throttle response and more direct gear changes.

Features:

• 65A Durometer bushings
• Reduced transmission movement
• Improved shifting
• Direct replacement for the factory part numbers: 8K0 399 151DB / 8K0399151DB, 8K0 399 151CD / 8K0399151CD, 8K0 399 151BF / 8K0399151BF, 8W0 399 156AR / 8W0399156AR, 8W0 399 156AQ / 8W0399156AQ

Fitment for B8, B8.5, B9, B9.5, C8 and 4M vehicles (all transmissions, all engines):

• 2009 - Current Audi A4
• 2010 - Current Audi S4
• 2013 - Current Audi RS4
• 2008 - Current Audi A5
• 2010 - Current Audi Allroad
• 2008 - Current Audi S5
• 2013 - Current Audi RS5
• 2008 - Current Audi Q5
• 2008 - Current Audi SQ5
• 2020 - Current Audi RS6
• 2019 - Current Audi RS7
• 2020 - Current Audi SQ7
• 2019 - Current Audi SQ8
• 2019 - Current Audi A8
• 2019 - Current Audi S8

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 13 applications

SQ8

Make	Model	Engine	Years
AUDI	SQ8 (4M)		2019–2023

SQ7

Make	Model	Engine	Years
AUDI	SQ7 (4M)		2019–2023

S5

Make	Model	Engine	Years
AUDI	S5 (B8/B8.5)		2009–2017
AUDI	S5 (B9)		2018–2023

A5

Make	Model	Engine	Years
AUDI	A5 (B8/B8.5)		2009–2017

S4

Make	Model	Engine	Years
AUDI	S4 (B8/B8.5)		2010–2017
AUDI	S4 (B9)		2018–2023

ALLROAD

Make	Model	Engine	Years
AUDI	ALLROAD (B8/B8.5)		2010–2016

A4

Make	Model	Engine	Years
AUDI	A4 (B8/B8.5)		2009–2016

RS5

Make	Model	Engine	Years
AUDI	RS5 (B8/B8.5)		2013–2017

Q5

Make	Model	Engine	Years
AUDI	Q5 (B9)		2018–2023

SQ5

Make	Model	Engine	Years
AUDI	SQ5 (B9)		2018–2023

RS6

Make	Model	Engine	Years
AUDI	RS6 (C8)		2020–2023

Fitment data last updated: 2026-09-25

✓ Fits 13 vehicle applications Check vehicle fitment before ordering View fitment