Engine Oil Mist Separator / Crankcase Breather Unit ?️

This part is needed to keep the engine’s crankcase ventilation clean and controlled. During normal driving, blow-by gases carry fine oil mist out of the engine. If that oil mist is not separated, it can be pulled into the intake system, dirty the turbo/intercooler pipes, increase carbon deposits, and raise oil consumption.

How it works ⚙️

Inside the housing, a chambered baffle/cyclone-style path forces vapors to slow down and change direction. Oil droplets drop back to the engine, while cleaner vapors continue through the breather line. This helps stabilize crankcase pressure and protects sensors, hoses, and the intake tract.

What happens when it fails ?

A cracked housing, stuck internal valve, or clogged passages can cause rough idle, whistling/vacuum leaks, oil seepage, blue smoke, and “check engine” faults. In severe cases you may see boosted engines pushing oil into charge pipes, fouling plugs, and stressing seals and gaskets.

Compatible models ✅

• Amg X 290 V8 S 4Matic
• S 560 4-Matic Maybach
• Amg Glc 63 4Matic
• S 63 Amg
• G 550
• S 63 Amg 4-Matic
• G 550 4X4² Usa
• C 63 Amg
• E 63 Amg 4Matic
• G 550 Usa
• C 63 Amg S-Modell
• S 560
• S 560 4-Matic
• Amg G63 Ece
• G 500
• Amg X 290 V8 4Matic
• Amg G63 Usa
• E 63 Amg S-Modell 4Matic
• Amg Glc 63 S 4Matic
• S 560 Maybach