Valve Cover Diaphragm 54.5mm – Mercedes OM654 2.0 Diesel | OEM 6540164900 6540165000 6540164200

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.

• Mercedes

Returns and exchanges

Request a change-of-mind return within 14 calendar days of delivery, then send the goods within 14 calendar days of notifying us. Our voluntary return option applies to unused, uninstalled, complete goods in their original condition and packaging. Exchanges are subject to availability and agreement.

The customer pays change-of-mind return shipping. No restocking fee applies. Refunds and original delivery charges are handled under our Refund & Return Policy and applicable law.

Faulty, damaged or incorrect goods

Email contact-us@klifex.net with your order details and a description of the problem. These claims are separate from change-of-mind returns. Where we are responsible, we bear the required remedy and return costs. Installation alone does not remove mandatory defect rights.

Your legal rights

Applicable statutory rights take precedence, including EU/EEA and UK withdrawal rights and legal guarantees. Necessary inspection does not remove a statutory withdrawal right; deductions for excessive handling must reflect an actual, evidenced loss of value.

Contact us for the correct return address before shipping. Our legal address is not a return address.

Read the full Refund & Return Policy