034Motorsport Density Line Engine Mount for Audi A6 Quattro, S4, RS4, S6, and RS6 (2000–2009)

The 034Motorsport Density Line engine mount is a solid-rubber motor mount that supports the engine on the Audi A6 Quattro, S4, RS4, S6, and RS6 models shown in the fitment table. 034Motorsport replaces the voids and fluid cavities of the factory mount with Density Line rubber and makes the mount base from steel instead of aluminum. The result is far less engine movement under load and less drivetrain slop during shifts. The design also does away with the active engine mount feature, which is a frequent failure point on the factory parts. Each mount is built by an OE supplier to 034Motorsport specifications for performance use and is made in the United States.

034Motorsport parts sold by PMB Performance carry a 24-month warranty.

034Motorsport states plainly that this is a performance mount and not an OE replacement, although it crosses to factory reference 4B3199379M. The main choice when ordering is whether your car has active engine mounts with integrated solenoids. Removing those solenoid mounts triggers a check engine light, so those cars need two Active Motor Mount Resistor Bypasses, one per side. 034Motorsport sells that bypass connector as part number 034-708-0000. An engine mount holds the engine and transmission to the chassis, keeps the drivetrain aligned, and limits the vibration that reaches the cabin. 034Motorsport develops Audi and Volkswagen performance parts and tuning from its Fremont, California, facility, a company Javad Shadzi founded in 2005.

Technical Details

• Manufacturer: 034Motorsport
• Part number: 034-509-0008
• Product line: Density Line
• Construction: Density Line rubber in place of factory voids and fluid cavities, steel base
• Factory reference: 4B3199379M
• Made in the United States
• Mount nut torque: 25 Nm (about 18.5 ft-lb)
• Warranty: 24 months

Installation & Tuning Notes

Torque the mount nuts to the factory specification of 25 Nm, roughly 18.5 ft-lb. Overtightening these nuts can damage the mount. On cars that had active engine mounts, install a resistor bypass for each side to keep the check engine light off.

Common Questions

Is this a factory OE mount?
No. It is built by an OE supplier to 034Motorsport specifications for performance applications and is sold only by 034Motorsport.

What signs point to a worn engine mount?
Engine and drivetrain vibration, plus the engine rocking during gear changes or under braking, are the usual signs.

PMB Performance can help you match this mount and its bypass connectors to your Audi.

Fitment & Compatibility

Check the fitment table below for the Audi models and years this mount fits. Before ordering, find out whether your car has active engine mounts with integrated solenoids. Send PMB your VIN and we will confirm fit.