PCV Diaphragm Repair Kit 52mm for Mercedes-Benz M278 & M157 Engines

This PCV diaphragm repair kit is designed to repair the crankcase ventilation system (oil separator) used on Mercedes-Benz M278 and M157 engines.

A failed PCV diaphragm can cause excessive crankcase pressure, oil consumption, rough engine operation, vacuum leaks and oil leaks. Replacing the damaged membrane restores proper crankcase ventilation without replacing the complete valve cover or oil separator assembly.

OEM / Reference Number:

• A2780100431

• 2780100431

Diaphragm Diameter:

• 52 mm

Compatible Engines:

• Mercedes-Benz M278 4.0L V8 BiTurbo

• Mercedes-Benz M278 4.6L V8 BiTurbo

• Mercedes-Benz M157 5.5L V8 BiTurbo AMG

• Mercedes-Benz M157 6.0L V8 BiTurbo AMG

Common Symptoms of a Failed PCV Diaphragm:

• Whistling noise from the engine

• Increased oil consumption

• Rough idle

• Vacuum leaks

• Oil leaks around the engine

• Check Engine Light

• Excessive crankcase pressure

• Smoke from the exhaust

Features:

• Direct replacement PCV diaphragm

• Oil and heat resistant material

• Restores proper crankcase ventilation

• Cost-effective alternative to replacing expensive assemblies

• Designed for long service life

Vehicle Compatibility:

• Mercedes-Benz ML-Class / GLE (W166)
• Mercedes-Benz GL-Class / GLS (X166)
• Mercedes-Benz SLK / SLC (R172)
• Mercedes-Benz E-Class (C207, A207)
• Mercedes-Benz E-Class (W212, V212)
• Mercedes-Benz E-Class Estate (S212)
• Mercedes-Benz CL-Class (C216)
• Mercedes-Benz CLS-Class (C218, X218)
• Mercedes-Benz S-Class (W221, V221)
• Mercedes-Benz SL-Class (R231)
• Mercedes-Benz G-Class (W463)
• Mercedes-Benz S-Class Coupe (C217)
• Mercedes-Benz S-Class (W222, V222, X222)
• Mercedes-Benz GLE Coupe (C292)

Package Includes:

• 1 × PCV Diaphragm Repair Kit

Please verify the part number on your vehicle before ordering.

All parcels are sent by airmail on the same day or the next business day, except holidays and weekends. The parcel is shipped with an economical carrier because delivery is free for you. As everyone knows, economy shipping is not always fast. Delivery can take 7 to 30 days, so please keep this in mind before placing your order. Unfortunately, we cannot affect the delivery speed once the parcel has been shipped. Thank you for your understanding.