X4XZ PCV Valve Oil Separator for VW & Audi 06K103495 Replacement — Black OEM Fit, Includes Mounting Nuts

X4XZ PCV Valve Engine Crankcase Vent Valve Oil Separator replaces OE# 06K103495 to restore proper crankcase ventilation and oil separation on compatible VW and Audi 1.8T/2.0T engines.

When the original oil separator (PCV valve) reaches end of life it can allow oil and blow-by gases to circulate improperly, leading to sludge build-up and reduced engine efficiency. The X4XZ replacement is built to the OE fitment pattern and connects directly to models that originally used OE# 06K103495 and related variants. This listing includes the oil separator plus the bolt nuts required for installation and is designed to match the size, ports, and mounting points used on many Golf, Jetta, Passat, GTI, A3, A4, A5, A6, A7, Q3, Q7, TT and other compatible vehicles from 2014–2018.

Which vehicles is this X4XZ oil separator compatible with?

This replacement matches OE# 06K103495 and interchangeable part numbers, so it fits a broad set of VW and Audi turbocharged engines from mid-2010s model years. Always cross-check the OE numbers and engine code to confirm compatibility before purchase.

• VW: Golf (2015–2018) 2.0T, Golf Alltrack (2017–2018), Golf SportWagen (2015–2018), Jetta 1.8T (2014–2018), Passat/Beetle (2014–2018), GTI (2015–2018).
• Audi: A3 (2015–2018) 2.0T, A3 Quattro (2015–2018), A4 (2016–2018) 2.0T, A5 (2017–2018) 2.0T, A6/A7 (2016–2018) 1.8T/2.0T, Q3/Q7 (2016–2018), TT (2016–2018).
• Replaces OE numbers: 06K103495, 06K013495AA, 06K103495AT, 06K103495AP and similar variants.

How does this replacement improve engine ventilation and oil control?

The X4XZ oil separator isolates oil from crankcase vapors so only gas passes back into the intake, reducing oil consumption and internal contamination. Restoring this separation slows sludge buildup and helps maintain cleaner intake and valve surfaces under typical driving conditions.

• Redirects blow-by gases while trapping oil droplets before they return to the intake.
• Helps reduce oil deposits on intake valves and combustion chambers.
• Designed to resist heat and prolonged oil exposure for consistent operation.

What are the build quality and installation details?

The unit is manufactured from durable materials chosen to tolerate continuous heat and oil exposure in the engine bay. The package includes one oil separator and seven bolt nuts to secure it in place; no printed instructions are supplied, but the part follows OE mounting points for a straightforward replacement.

• Durable construction for resistance to thermal cycling and oil contact.
• Includes bolt nuts (x7) for secure OEM-style installation.
• Fits directly in place of the original unit—professional or experienced DIY installation recommended.

What after-sales support does X4XZ provide?

X4XZ offers customer assistance and a limited product service window for peace of mind after purchase. If you encounter fitment, installation, or quality concerns, contact the seller for troubleshooting and warranty options.

• 24-hour customer service availability for inquiries.
• 1-year product service support for defects or fitment issues.
• Responsive assistance if replacement or guidance is required.

Who is this for: This oil separator is intended for owners or technicians working on mid‑2010s VW and Audi models that use the OE# 06K103495 series components. It's suited to drivers noticing increased oil consumption, a smoky PCV path, or routine preventative maintenance during timing belt/chain or intake service intervals. Always verify compatibility with your vehicle’s VIN or OE part number before ordering, and consider professional installation if you are unfamiliar with engine bay components.