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Genuine 078103235R Engine Crankcase Breather HoseOE Quality 60-Day Returns
Part #: 078103235R

Genuine 078103235R Engine Crankcase Breather Hose

24 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Audi, A6 Quattro, Allroad Quattro, and S4
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Engine Crankcase Breather Hose for Audi

This Genuine engine crankcase breather hose is a direct-fit emission control component for select Audi models with crankcase ventilation system service needs. Part number 078103235R is used on applications with hoses or with a pressure regulator valve, depending on vehicle configuration.

Key Features

  • Genuine replacement engine crankcase breather hose
  • Part number 078103235R
  • Fits Audi A6 Quattro, Audi Allroad Quattro, and Audi S4 applications listed below
  • Supports crankcase ventilation system routing
  • Application-specific fitment for vehicles with hoses or pressure regulator valve

Fitment Details

  • Fits 2002-2005 Audi Allroad Quattro, N/A, w/ Hoses
  • Fits 2002-2005 Audi Allroad Quattro, N/A, w/ Pressure Regulator Valve
  • Fits 2002-2004 Audi A6 Quattro, N/A, w/ Hoses
  • Fits 2002-2004 Audi A6 Quattro, N/A, w/ Pressure Regulator Valve
  • Fits 2002 Audi S4, N/A, w/ Hoses
  • Fits 2002 Audi S4, N/A, w/ Pressure Regulator Valve
  • Fits 2001 Audi A6 Quattro, N/A, From 9/00; VIN 4B.1.040 321; w/ Hoses
  • Fits 2001 Audi A6 Quattro, N/A, From 9/00; VIN 4B.1.040 321; w/ Pressure Regulator Valve
  • Fits 2001 Audi Allroad Quattro, N/A, From 9/00; VIN 4B.1.032 001; w/ Hoses
  • Fits 2001 Audi Allroad Quattro, N/A, From 9/00; VIN 4B.1.032 001; w/ Pressure Regulator Valve
  • Fits 2001 Audi S4, N/A, From 9/00; VIN 8D.1.053 001; w/ Hoses
  • Fits 2001 Audi S4, N/A, From 9/00; VIN 8D.1.053 001; w/ Pressure Regulator Valve

What It Is Used For

  • Replacing a cracked or deteriorated crankcase breather hose
  • Restoring crankcase ventilation routing on Audi A6 Quattro, Allroad Quattro, and S4 models
  • Addressing vacuum or ventilation leaks caused by damaged hose connections
  • Correcting crankcase ventilation service issues tied to hose or pressure regulator valve configurations

Installation Notes

Verify the vehicle’s model year, VIN break, and crankcase ventilation configuration before ordering. This part number 078103235R is listed for specific Audi A6 Quattro, Audi Allroad Quattro, and Audi S4 applications with either hoses or a pressure regulator valve.

Quality Assurance

Genuine OE replacement part for the listed Audi applications. This part cross-references no additional part numbers in the provided data.

This part fits 24 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
2005AudiAllroad Quattro2.7LV6N/Aw/ Hoses
2005AudiAllroad Quattro2.7LV6N/Aw/ Pressure Regulator Valve
2004AudiA6 Quattro2.7LV6N/Aw/ Hoses
2004AudiA6 Quattro2.7LV6N/Aw/ Pressure Regulator Valve
2004AudiAllroad QuattroN/Aw/ Hoses
2004AudiAllroad QuattroN/Aw/ Pressure Regulator Valve
2004AudiAllroad Quattro2.7LV6N/Aw/ Hoses
2004AudiAllroad Quattro2.7LV6N/Aw/ Pressure Regulator Valve
2003AudiA6 Quattro2.7LV6N/Aw/ Hoses
2003AudiA6 Quattro2.7LV6N/Aw/ Pressure Regulator Valve
2003AudiAllroad QuattroN/Aw/ Hoses
2003AudiAllroad QuattroN/Aw/ Pressure Regulator Valve
2002AudiA6 Quattro2.7LV6N/Aw/ Hoses
2002AudiA6 Quattro2.7LV6N/Aw/ Pressure Regulator Valve
2002AudiAllroad QuattroN/Aw/ Hoses
2002AudiAllroad QuattroN/Aw/ Pressure Regulator Valve
2002AudiS4N/Aw/ Hoses
2002AudiS4N/Aw/ Pressure Regulator Valve
2001AudiA6 QuattroAutomatic2.7LV6N/AFrom 9/00; VIN 4B.1.040 321; w/ Hoses
2001AudiA6 QuattroAutomatic2.7LV6N/AFrom 9/00; VIN 4B.1.040 321; w/ Pressure Regulator Valve
2001AudiAllroad QuattroN/AFrom 9/00; VIN 4B.1.032 001; w/ Hoses
2001AudiAllroad QuattroN/AFrom 9/00; VIN 4B.1.032 001; w/ Pressure Regulator Valve
2001AudiS4N/AFrom 9/00; VIN 8D.1.053 001; w/ Hoses
2001AudiS4N/AFrom 9/00; VIN 8D.1.053 001; w/ Pressure Regulator Valve

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

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