Blow off Valve Diverter for Audi A6 (2006-2018) 2.0L

Direct-Fit Blow Off Valve Diverter for 2006-2018 Audi A6

What it Does: The Blow Off Valve Diverter replaces the failure-prone factory diverter valve mechanism on the 2006-2018 Audi A6 to prevent boost leaks, improve boost holding under load, and sharpen throttle recovery between gearshifts.

The Stock Audi A6 Diaphragm Failure & Boost Bleed

Factory diverter valves fitted to the EA113 and EA888 2.0 TFSI/TSI engines utilize a fragile rubber diaphragm or early-revision plastic piston mechanism. Subjected to repeated heat cycling and elevated charge pressures, the OEM elastomeric membrane frequently tears, resulting in severe boost bleed, delayed spool response, and under-boost fault codes (P0299). Furthermore, the stock solenoid return spring struggles to maintain seal integrity under tuned or aggressive drive cycles, allowing charged air to leak back into the unpressurized intake tract.

The Engineering Solution

Engineered as a robust sandwich-mount solution, this valve features a CNC-machined, black-anodized 6061-T6 billet aluminum body housing a precision-ground brass/aluminum internal piston and a calibrated high-rate return spring. Installed directly between the factory electronic solenoid base and the turbocharger compressor housing, it retains OEM ECU-controlled actuation speed while eliminating the mechanical weakness of the plastic diverter assembly. High-durometer Viton O-rings deliver a positive seal against heat soak and charge pipe expansion, venting surplus pressure atmospherically to protect the turbo compressor wheel from surge while holding sustained boost reliably across the rev range.

Technical Specifications

Compatibility

• 2006-2011 Audi A6 2.0 TFSI (C6 Chassis)
• 2012-2018 Audi A6 2.0 TFSI / TSI (C7 Chassis)

Frequently Asked Questions

Does this fit the C6 and C7 A6?
Yes, this is a direct fit for the 2006-2018 Audi A6 equipped with the 2.0L TFSI/TSI EA113 and EA888 engines utilizing the 3-bolt solenoid mount.

Will installing this atmospheric diverter trigger a Check Engine Light (CEL)?
No, because it retains and works in conjunction with the factory electronic solenoid, OE cycling signals remain unaffected without triggering fault codes.

The Audi Precision Standard

Maintaining tight tolerances is mandatory for Euro forced-induction powertrains; this billet assembly ensures factory ECU integration without check engine lights, delivering reliable seal integrity under heavy boost.