X4XZ PCV Valve Oil Separator for Audi 2.0L (A4 A5 A6 Q5) — OE-Fit with Gasket & O-Rings

The X4XZ PCV valve engine crankcase vent oil separator replaces worn separators to help control blow-by gases and keep oil out of the intake on specified Audi 2.0L engines.

If your Audi A4, A5, A6, Q3, Q5 or Allroad with a 2.0L four-cylinder is showing oil in the intake, rough idling, or increased oil consumption, the oil separator/PCV assembly is a common wear item to inspect. This X4XZ unit matches OE fitments (06H103495AE, 06H103495J, 06H103495AK) and ships with the necessary gasket and O-rings so you can restore the crankcase vent system without hunting down extra seals.

How does this oil separator improve engine operation?

Replacing a failed oil separator stops excessive oil and vapor from entering the intake tract, which helps maintain throttle body and intake-valve cleanliness and reduces the chance of sludge buildup. A properly functioning separator supports more stable crankcase pressure and can reduce oil consumption symptoms.

• Prevents oil carryover into intake and intake manifold
• Helps maintain correct crankcase ventilation flow
• Reduces deposits on intake valves and sensors

Will this part fit my Audi and which OE numbers match?

This X4XZ replacement covers many Audi 2.0L four-cylinder applications; verify fit with your model year and engine code before ordering. The part is compatible with OE references 06H103495AE, 06H103495J and 06H103495AK.

• Fits Audi A4 (2012–2016) 2.0L L4 gasoline and select Quattro variants
• Fits Audi A5 (2012–2017) and A6 (2012–2015) 2.0L applications listed
• Compatible with Q3 (2015–2018), Q5 (2012–2017) and Allroad 2.0L where specified

What comes in the box and is installation difficult?

Your purchase includes one oil separator, one gasket and five O-ring seals so you have the commonly required seals for a proper install. No printed manual is included, but the unit is designed to fit like-for-like; a basic mechanical skill set and common hand tools are usually sufficient for a do-it-yourself replacement.

• Package: Oil separator x1, Gasket x1, O-ring seals x5
• No printed instructions—refer to repair manual or online guides
• Typical install requires removal of intake components and careful seal replacement

How durable is the X4XZ oil separator under engine conditions?

The separator is built from materials selected to resist heat and continuous contact with oil and vapors, delivering consistent performance under typical operating conditions. Its construction is intended to provide a reliable replacement life that meets routine service expectations.

• High-temperature resistant materials for durability
• Engineered to tolerate continuous oil exposure
• Manufactured to meet function and fit requirements of OE references

Who is this for: This X4XZ PCV valve oil separator is intended for DIY mechanics, independent shops, and Audi owners who need a direct-fit replacement for crankcase ventilation components on specified 2.0L Audi models. Choose this unit when you want OE-compatible references, included seals, and a ready-to-install replacement to address oil carryover, rough running, or ventilation-related symptoms.