EGR Valve Vacuum Actuator Membrane 45mm – Mercedes OM651 2.2 CDI | OEM 6511400502 6511400302

The vacuum actuator membrane inside the Mercedes OM651 2.2 CDI EGR bypass valve (6511400502) tears with age — causing the EGR bypass to stop operating correctly, EGR fault codes, and incorrect exhaust gas temperatures. This 45mm direct replacement membrane restores correct actuator function.

Fits OEM #6511400502.

When to Inspect This Part

• whistling or excessive crankcase vacuum
• rough or unstable idle
• increased oil consumption
• oil residue in the intake
• smoke after warm-up
• mixture faults or an intake air leak

What's Included

• 1 × EGR Valve Vacuum Actuator Membrane 45mm

OEM Part Numbers and Vehicle Fitment

Additional confirmed fitment

• Mercedes-Benz Mercedes Benz Sprinter (w906)
• Mercedes-Benz Mercedes Benz C-class (w204, s204, c204)
• Mercedes-Benz Mercedes Benz CLS-class (c218, x218)
• Mercedes-Benz Mercedes Benz Viano (w639)
• Mercedes-Benz Mercedes Benz Vito (w639)
• Mercedes-Benz Mercedes Benz S-class (w222, v222, x222)
• Mercedes-Benz Mercedes Benz E-class (s212)
• Mercedes-Benz Mercedes Benz E-class (w212, v212)
• Mercedes-Benz Mercedes Benz E-class (c207, a207)
• Mercedes-Benz Mercedes Benz B-class (w246, w242)
• Mercedes-Benz Mercedes Benz S-class (w221, v221)
• Mercedes-Benz Mercedes Benz ML-class / GLE (w166)
• Mercedes-Benz Mercedes Benz GLK-class (x204)
• Mercedes-Benz Mercedes Benz GLA-class (x156)
• Mercedes-Benz Mercedes Benz A-class (w176)
• Mercedes-Benz Mercedes Benz SLK/SLC (r172)
• Mercedes-Benz Mercedes Benz CLA-class (c117, x117)
• Mercedes-Benz Mercedes Benz C-class (w205, v205, s205, c205)
• Mercedes-Benz Mercedes Benz Vito (w447)
• Mercedes-Benz Mercedes Benz V-class (w447)

Part Number / PN

6511400502, 6511400302, 6511400002, 6510940065, 6511410369, 6511410169, 6511410269, 6511410069, 6511410469, 651141036964, a6511400502, a6511400302, a6511410369, A651141036964

Important Fitment Check

Before ordering, compare the part design, dimensions, connectors, and every available OEM/P/N marking with the part installed on the vehicle. Matching OEM/P/N 6511400502 is the primary fitment check.

FAQ

How do I confirm fitment for this EGR Valve Vacuum Actuator Membrane 45mm?

Compare the exact OEM/P/N and physical design with the installed part. The primary reference is 6511400502. Do not select the part by vehicle model alone.

What symptoms may indicate a problem with this EGR Valve Vacuum Actuator Membrane 45mm?

Confirmed symptoms include whistling or excessive crankcase vacuum, rough or unstable idle, increased oil consumption, oil residue in the intake. Diagnose the original assembly before ordering so another fault is not mistaken for this part.

What is included with this EGR Valve Vacuum Actuator Membrane 45mm?

The confirmed kit contents are: 1 × EGR Valve Vacuum Actuator Membrane 45mm.

Does this listing include the complete surrounding assembly?

No. It includes only the item or repair components identified for this SKU. Inspect related parts separately and replace them only when diagnosis confirms a fault.

What should be checked before installation?

Check the OEM/P/N, dimensions, connectors, orientation, and condition of the mating components. Installation should follow the correct service procedure for the specific vehicle and 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