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Audi B6/7 A4/S4 With 6HP19 Auto Driveshaft Center Support Bearing Carrier Upgrade
Holds the driveshaft where it should be. Isolation dampers minimize vibrations.
Bushing Options:
- Street (Soft/Quieter)
- Track (Hard/Louder)
- Both Street (Soft/Quieter) & Track (Hard/Louder)
The Problem:
The stock center support bearing carrier holds the driveshaft in place with rubber so thin about 20 lbs of force moves it from center to the end of its travel. While that’s great for making sure no NVH makes it to the cabin, the stock bushing is extremely prone to failure, especially in harsher climates and on higher-powered cars. Even on the best-kept cars, the stock rubber bushing dry rots and cracks by the time it’s 10-15 years old. When the bushing lets go, it leads to excessive vibrations and clunking which can damage the transmission and rear diff. To make matters worse, the stock carrier is molded onto the center support bearing, leading to costly driveshaft replacement.
The Solution:
This upgraded unit keeps the driveshaft firmly in place at all times, and its polyurethane construction ensures it will never wear out. The thick bushings ensure the driveshaft cannot move from center, maintaining driveshaft alignment under any loading condition.
The Bushings:
Two options are available for the bushings, both of which are many times over better than the stock bushings. We’ve paid close attention to the NVH levels associated with this upgrade. After extensive design iterations, we’ve come up with custom isolator bushings that separate the carrier from the body of the vehicle and mounting hardware. These carriers substantially reduce NVH levels.
The street bushings absorb most of the NVH from the drivetrain. Some light NVH is possible at some speeds in the form of a soft hum. With a modified exhaust or windows down you’ll probably never hear it.
The track bushings are for those who want no-compromise drivetrain performance. These may create a substantial amount of cabin noise. Not sure which is for you? Try them both, they’re interchangeable!
The Installation:
Installation doesn’t require removal of the driveshaft. The 2-part design clamps around the unserviceable OEM bearing. The old carrier must be removed, so a cutting tool is required.
Fitment:
B6/7 A4/S4 with 6HP19 transmission (6-speed automatic)
Full Assemblies:
Street - B6004A0-S
Track - B6004A0-T
Both - B6004A0-B
Bushing Packs:
Street - BSH04A0
Track - BSH04A1
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