Audi A6/Allroad/S4 Turbo Boost Pressure Control Line Left 078145718AB

OEM Part #: 078-145-718-AB (078145718AB)

This page covers one exact OEM part number. Every unit we stocked has sold.

We may be able to get another

Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:

  • Genuine OEM — real photos
  • 30-day returns on eligible parts
  • eBay Top Rated · 100,000+ positive ratings
  • Ships from our own indoor warehouse

The Turbo Boost Pressure Control Line (OEM Part Number 078145718AB) is crucial for effective turbocharger operation in select Audi models. Located on the left side of the engine bay, this part connects the turbocharger's wastegate to the control solenoid, regulating boost pressure and enhancing engine performance. Common issues that may require replacement include brittleness, wear, or damage from heat exposure, leading to underperformance or turbo lag. This part is compatible with the 2000-2004 Audi S4 (2.7L V6), Audi Allroad Quattro (2.7L V6), and Audi A6 Quattro (2.7L V6). Alternative nomenclature for this component includes "pressure line." Other related part numbers include 078121598B and 078145702SX. Ensure optimal performance with this authentic OEM component.

Specifications

Specifications for Turbo Boost Pressure Control Line 078145718AB
Fits Vehicle ModelA6, Allroad, S4
Fits Vehicle MakeAudi
OEM Part No078-145-718-AB (078145718AB)
Compatible OEM Part No 078-145-718-Q
SideLeft
CategoryTurbo / Supercharger

Compatible Vehicles

Fits 14 vehicle configurations across 1 make, 2000-2004.

Check your specific vehicle before ordering. This list shows year, make, and model. Some years have multiple trims or engines that use different parts, and individual listings may have additional fitment notes (e.g. “with sunroof only”). Review the full variant list below, or message us with your VIN and we’ll confirm the match.

Audi

  • A6 2000-2004 · 5 variants 1 with note
  • Allroad 2001-2004 · 4 variants 1 with note
  • S4 2000-2002 · 5 variants
View all 14 vehicle configurations — 2 with fitment notes
Full vehicle fitment list for Turbo Boost Pressure Control Line 078145718AB
Year Make Model Trim Engine Note
2000 Audi A6 Quattro Sedan 2.7L V6 Turbo
2000 Audi S4 Sedan 2.7L V6 Turbo
2001 Audi A6 Quattro Sedan 2.7L V6 Turbo
2001 Audi Allroad Quattro Wagon 2.7L V6 Turbo
2001 Audi S4 Wagon 2.7L V6 Turbo
2001 Audi S4 Sedan 2.7L V6 Turbo
2002 Audi A6 Quattro Sedan 2.7L V6 Turbo
2002 Audi Allroad Quattro Wagon 2.7L V6 Turbo
2002 Audi S4 Wagon 2.7L V6 Turbo
2002 Audi S4 Sedan 2.7L V6 Turbo
2003 Audi A6 Quattro Sedan 2.7L V6 Turbo
2003 Audi Allroad Quattro Wagon 2.7L V6 Turbo
2004 Audi A6 Quattro Sedan 2.7L V6 Turbo For Vehicles Where Last 6 Digits of VIN Number are Less Than 015000
2004 Audi Allroad Quattro Wagon 2.7L V6 Turbo For Vehicles Where Last 6 Digits of VIN Number are Less Than 015000

Ask a parts specialist

Asking about: Turbo Boost Pressure Control Line 078145718AB · OEM #078145718AB