034Motorsport Active Engine Mount Resistor Bypass for Audi A6 Quattro, S4, S6, RS4, and RS6 (2000–2009)

This 034Motorsport resistor bypass is a plug-in electrical connector that clears the check engine light set when the factory active engine mounts on certain Audi models are replaced with 034Motorsport Density Line or Motorsport Spec engine mounts. The factory active mounts are prone to failure. When they come out, the engine control system detects the missing mount circuit and turns on the warning light. The bypass plugs into the mount connector in place of the active mount and keeps that fault from setting. One bypass is required for each mount, and they are priced individually, so a car with two active mounts needs two. Each unit is made in the United States.

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

This part is the electrical companion to 034Motorsport's own mount line, not a mount itself. It has no factory part number because Audi does not offer an equivalent. Engine mounts hold the engine and transmission to the subframe and keep the drivetrain aligned while limiting vibration into the cabin. When worn, they allow engine rocking during gear changes and braking along with added drivetrain vibration. Owners who swap the failure-prone active units for 034Motorsport's solid-rubber mounts use these bypasses to finish the job without a lingering warning light.

Technical Details

• Manufacturer: 034Motorsport
• Part number: 034-708-0000
• Part: plug-in resistor bypass for active engine mounts
• Purpose: removes the check engine light after active mounts are replaced
• Quantity needed: one per mount
• Sold: individually
• Factory equivalent: none
• Country of manufacture: United States
• Warranty: 24 months

Installation & Tuning Notes

Plug one bypass into each active mount connector after removing the factory active mounts and fitting 034Motorsport Density Line or Motorsport Spec engine mounts.

Common Questions

How many do I need?
One bypass is required for each mount being replaced. They are priced individually, so order one for every active mount on the car.

Which mounts is this bypass meant for?
034Motorsport made it for use with its Density Line and Motorsport Spec engine mounts when they replace the factory active mounts.

PMB sells these bypasses alongside 034Motorsport engine mounts for Audi owners retiring their active mounts.

Fitment & Compatibility

Check the fitment table below for your model and year. Make sure your car is fitted with factory active engine mounts. Send PMB your VIN and we will confirm fit.