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FEBI BILSTEIN Engine Oil Separator 175690
FEBI BILSTEIN Engine Oil Separator - 175690
FEBI BILSTEIN Engine Oil Separator 175690
FEBI BILSTEIN Engine Oil Separator - 175690

FEBI BILSTEIN Engine Oil Separator 175690

FEBI BILSTEIN
Availability:
5+ in stock, ready to be shipped

Ships same or next business day

SKU 175690
$256.59 - $256.59
$256.59
$256.59 - $256.59
$256.59
CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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FEBI BILSTEIN

Engine Oil Separator

This product also goes by these part numbers: 079 103 542 E, 079103542E, 175690

This part also goes by the following cross reference.

Cross Reference Part Number: 079103542E

Fits These Vehicles 11 applications
D4 A8
Make Model Engine Years
AUDI A8 D4 (4H2, 4H8, 4HC, 4HL) S8 quattro 2012–2018
AUDI A8 D4 (4H2, 4H8, 4HC, 4HL) 4.0 60 TSI quattro 2014–2018
AUDI A8 D4 (4H2, 4H8, 4HC, 4HL) S8 plus quattro 2015–2018
AUDI A8 D4 (4H2, 4H8, 4HC, 4HL) 4.0 TFSI quattro 2015–2018
C7 A6
Make Model Engine Years
AUDI A6 C7 (4G2, 4GC) S6 quattro 2014–2018
AUDI A6 C7 Avant (4G5, 4GD) RS6 quattro 2013–2018
AUDI A6 C7 Avant (4G5, 4GD) S6 quattro 2014–2018
AUDI A6 C7 Avant (4G5, 4GD) RS6 performance quattro 2015–2018
C7 A7
Make Model Engine Years
AUDI A7 Sportback (4GA, 4GF) RS7 quattro 2013–2018
AUDI A7 Sportback (4GA, 4GF) S7 quattro 2014–2018
AUDI A7 Sportback (4GA, 4GF) RS7 performance quattro 2015–2018

Fitment data last updated: 2026-04-28

Fits 11 vehicle applications Check vehicle fitment before ordering View fitment

About this Crankcase Ventilation (PCV)

The FEBI BILSTEIN 175690 is part of the crankcase ventilation (PCV) system, which routes gases that escape past the pistons back into the intake to be burned, and separates oil out of them. When the system fails, crankcase pressure and oil consumption can rise quickly.

Frequently asked questions

What does the crankcase ventilation system do?

It relieves pressure inside the engine by drawing blow-by gases back into the intake, while an oil separator or valve keeps oil out of the intake. Correct crankcase pressure protects seals and gaskets.

What are the signs of a failed PCV valve or oil separator?

A whistling or howling noise at idle, rough idle, lean-running fault codes, higher oil consumption, oil leaks from seals, blue smoke, or suction at the oil filler cap strong enough to hold the cap down.

What should I replace along with it?

Crankcase vent hoses become brittle with heat and age, so inspect and replace cracked hoses and fittings at the same time. On many European engines, the valve cover and separator are serviced together.

Can I replace PCV components myself?

Many parts are accessible with basic tools, though some separators sit under the intake manifold. Handle old plastic fittings carefully, as they can break during removal.

How do I make sure this crankcase ventilation part fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

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