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Standard Ignition EOS51 Engine Oil SeparatorOE Quality 60-Day Returns
Part #: EOS51

Standard Ignition EOS51 Engine Oil Separator

63 vehicles fit this part
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Fitment: Audi and Volkswagen, A3, A3 Quattro, A4, A4 allroad, A4 Quattro, A5 Quattro, A5 Sportback, A6, A6 Quattro, A7 Sportback, Golf R, Q3, Q5, Q7, S3, TT Quattro, and TTS Quattro
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Engine Oil Separator for Audi and Volkswagen

Standard Ignition EOS51 is an engine oil separator for select Audi and Volkswagen turbocharged applications. It is built for direct replacement service on vehicles such as the Audi A4 Quattro, Audi Q5, Audi Q7, Audi A3, and Volkswagen Golf R.

Key Features

  • Engine oil separator for cylinder block component service
  • Gaskets included for sealing at installation
  • Mounting hardware included
  • Inlet diameter: 0.04 in. (1.016 mm)
  • Outlet diameter: 0.07 in. (1.778 mm)
  • Clamp included: No
  • Connector quantity: 0
  • Terminal quantity: 0

Product Details

The Standard Ignition EOS51 oil separator is designed for vehicles that use a compact crankcase ventilation and oil separation assembly. This part number, EOS51, cross-references OE-style applications including 06K103495AF and related aftermarket numbers for the same service need. It is listed for select Audi TT Quattro, TTS Quattro, Q5, Q7, A4 allroad, A4 Quattro, A5 Quattro, A5 Sportback, A6 Quattro, A7 Sportback, Q3, A3, A3 Quattro, A4, S3, and Volkswagen Golf R models.

Common Issues Addressed

  • Oil vapor separation service on turbocharged engine assemblies
  • Crankcase ventilation component replacement during maintenance
  • Sealing concerns at the separator interface
  • Replacement of a worn or contaminated oil separator assembly
  • Restoration of proper oil separation routing in the engine block system

Installation Notes and Tips

  • Verify engine code and OE part number before ordering.
  • Inspect mating surfaces and replace damaged seals during installation.
  • Confirm hose and port alignment before tightening fasteners.
  • Use the included mounting hardware and gaskets as specified for the application.
  • Fits 2019-2023 Audi TT Quattro, N/A; Fits 2019-2023 Audi TTS Quattro, N/A; Fits 2021-2022 Audi Q5, N/A; Fits 2017-2022 Audi Q7, N/A; Fits 2017-2021 Audi A4 allroad, N/A; Fits 2017-2021 Audi A4 Quattro, N/A; Fits 2018-2021 Audi A5 Quattro, N/A; Fits 2018-2021 Audi A5 Sportback, N/A; Fits 2016-2021 Audi A6 Quattro, N/A; Fits 2021 Audi A7 Sportback, N/A; Fits 2019-2021 Audi Q3, N/A; Fits 2017-2020 Audi A3, N/A; Fits 2019-2020 Audi A3 Quattro, N/A; Fits 2017-2020 Audi A4, N/A; Fits 2019-2020 Audi S3, N/A; Fits 2018-2019 Volkswagen Golf R, N/A; Fits 2016-2018 Audi A6, N/A

Quality Assurance

Standard Ignition replacement parts are cataloged for direct-fit service applications and OE-style interchange support. EOS51 is listed with gasket and mounting hardware details to help confirm the correct service part for the vehicle.

BrandStandard Ignition
Part NumberEOS51
Clamp IncludedNo
Connector Quantity0
Contents1 oil seperator
Gaskets IncludedYes
Inlet Diameter (in)0.04
Inlet Diameter (mm)1.016
Mounting Hardware IncludedYes
Outlet Diameter (in)0.07
Outlet Diameter (mm)1.778
Protective Sleeve IncludedNo
Terminal Quantity0

This part fits 63 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2023AudiTT QuattroN/A
2023AudiTTS QuattroN/A
2022AudiQ5N/A
2022AudiQ72.0LL4N/A
2022AudiTT QuattroN/A
2022AudiTTS QuattroN/A
2021AudiA4 allroadN/A
2021AudiA4 QuattroN/A
2021AudiA5 QuattroN/A
2021AudiA5 SportbackN/A
2021AudiA6 Quattro2.0LL4N/A
2021AudiA7 Sportback2.0LL4N/A
2021AudiQ32.0LL4N/A
2021AudiQ5N/A
2021AudiQ72.0LL4N/A
2021AudiTT QuattroN/A
2021AudiTTS QuattroN/A
2020AudiA32.0LL4N/A
2020AudiA3 QuattroN/A
2020AudiA4N/A
2020AudiA4 allroadN/A
2020AudiA4 QuattroN/A
2020AudiA5 QuattroN/A
2020AudiA5 SportbackN/A
2020AudiA6 Quattro2.0LL4N/A
2020AudiQ32.0LL4N/A
2020AudiQ72.0LL4N/A
2020AudiS3N/A
2020AudiTT QuattroN/A
2020AudiTTS QuattroN/A
2019AudiA32.0LL4N/A
2019AudiA3 QuattroN/A
2019AudiA4N/A
2019AudiA4 allroadN/A
2019AudiA4 QuattroN/A
2019AudiA5 QuattroN/A
2019AudiA5 SportbackN/A
2019AudiA6 Quattro2.0LL4N/A
2019AudiQ3N/A
2019AudiQ72.0LL4N/A
2019AudiS3N/A
2019AudiTT QuattroN/A
2019AudiTTS QuattroN/A
2019VolkswagenGolf RN/A
2018AudiA32.0LL4N/A
2018AudiA4N/A
2018AudiA4 allroadN/A
2018AudiA4 QuattroN/A
2018AudiA5 QuattroN/A
2018AudiA5 SportbackN/A
2018AudiA62.0LL4N/A
2018AudiA6 Quattro2.0LL4N/A
2018AudiQ72.0LL4N/A
2018VolkswagenGolf RN/A
2017AudiA32.0LL4N/A
2017AudiA4N/A
2017AudiA4 allroadN/A
2017AudiA4 QuattroN/A
2017AudiA62.0LL4N/A
2017AudiA6 Quattro2.0LL4N/A
2017AudiQ72.0LL4N/A
2016AudiA62.0LL4N/A
2016AudiA6 Quattro2.0LL4N/A

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

This part directly replaces or is cross-referenced with the following part numbers:

06K103495AFEOS151EOS51MSAB10051SEP755

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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