6540165000 Valve Cover Diaphragm 54.5mm for Mercedes OM654 2.0 Diesel
This 54.5mm valve cover diaphragm is designed for Mercedes-Benz vehicles with the OM654 2.0L diesel engine using compatible valve covers referenced as 6540165000, 6540164900 and 6540164200.
This product is an individual 54.5mm replacement valve cover diaphragm. The package contains one diaphragm and does not include the complete valve cover assembly.
OEM / Reference Numbers
- 6540165000 / A6540165000 — primary fitment reference
- 6540164900 / A6540164900 — compatible valve cover reference
- 6540164200 / A6540164200 — compatible valve cover reference
- 6540169300 / A6540169300 — additional part number listed on the product page
- 6540165200 / A6540165200 — additional part number listed on the product page
- 50012970 — additional part number listed on the product page
Part Type
- Valve cover diaphragm
- Crankcase ventilation diaphragm
- 54.5mm replacement membrane
- Individual replacement component
- Not a complete valve cover assembly
What This Part Does
This diaphragm is a replaceable component of the compatible valve cover application. A failed diaphragm can be associated with incorrect crankcase vacuum, intake air leaks, unstable idle and increased oil consumption.
Compatible Vehicles
- Mercedes-Benz C-Class W205 / S205 / C205 — OM654 2.0L diesel
- Mercedes-Benz E-Class W213 / V213 — OM654 2.0L diesel
- Mercedes-Benz E-Class S213 / X213 — OM654 2.0L diesel
- Mercedes-Benz E-Class Coupe C238 — OM654 2.0L diesel
- Mercedes-Benz A-Class W177 — OM654 application listed on the product page
- Mercedes-Benz GLE W167 — OM654 2.0L diesel
- Mercedes-Benz GLC X253 — OM654 2.0L diesel
- Mercedes-Benz S-Class W222 — OM654 2.0L diesel
Engine / Technical Details
- Vehicle brand: Mercedes-Benz
- Engine family: OM654
- Engine displacement: 2.0L diesel
- Diaphragm diameter: 54.5mm
- Package contents: 1 × Valve Cover Diaphragm 54.5mm
- Primary fitment reference: 6540165000
Common Symptoms of Diaphragm Failure
- Mixture faults or intake air leak
- Rough or unstable idle
- Increased oil consumption
- Whistling
- Excessive crankcase vacuum
- Oil leaks
- Crankcase fault codes
Why Choose This Replacement Diaphragm
- Allows replacement of the individual 54.5mm diaphragm without presenting the product as a complete valve cover
- Designed for Mercedes OM654 2.0L diesel applications listed on the product page
- Compatible with the listed valve cover references
- Package includes one replacement 54.5mm diaphragm
Important Before Ordering
- Use 6540165000 as the primary fitment reference where applicable.
- Compare all available OEM / P/N markings with the installed part.
- Confirm that the required diaphragm diameter is 54.5mm.
- Compare the physical design and dimensions with the installed component.
- Do not confirm compatibility by vehicle model alone.
- This product includes one diaphragm and not the complete valve cover assembly.
What does reference 6540165000 fit?
6540165000 is the primary fitment reference for this 54.5mm valve cover diaphragm used in listed Mercedes-Benz OM654 2.0L diesel applications.
Are 6540164900 and 6540164200 related to 6540165000?
Yes. The product page lists 6540164900, 6540165000 and 6540164200 as compatible valve cover references for this replacement diaphragm.
What size is the Mercedes OM654 valve cover diaphragm?
The confirmed diaphragm diameter is 54.5mm.
What symptoms can indicate a failed OM654 valve cover diaphragm?
Confirmed symptoms include mixture faults or an intake air leak, rough or unstable idle, increased oil consumption, whistling, excessive crankcase vacuum, oil leaks and crankcase fault codes.
Is this a complete Mercedes valve cover?
No. The package contains one 54.5mm replacement diaphragm and does not include the complete valve cover assembly.
How do I confirm compatibility before ordering?
Compare the OEM / P/N markings, physical design and 54.5mm diaphragm size with the installed part. The product page identifies 6540165000 as the primary fitment check and advises against selecting by vehicle model alone.
Read All
Orders ship within 1–2 business days.
Standard delivery:
- USA: Some items ship from our US warehouse and arrive within 3 business days.
- USA-EU: 10–21 business days
- Worldwide: 14–30 business days
Shipping cost is shown at checkout.
Can I exchange or return an item?
Yes, you can exchange or return an item within 14 days of purchase. This right is guaranteed to you by the Law on the Protection of Consumer Rights
To use this feature, please make sure that:
- the product was not in use and has no traces of use: scratches, chips, abrasions, etc.
- the goods are fully completed and the integrity of the packaging is not violated
- retained all labels and factory markings