Skip to content
Lion Yard Trading
Mercedes-Benz · Engine

Swirl flap actuator and linkage

The flaps inside a diesel inlet manifold that swirl the incoming air at low revs, with the motor and linkage that move them.

Also called swirl flaps, intake flap motor.

How you know it is this

  • A fault code for intake manifold runner or swirl flap position
  • Limp mode, or a noticeable loss of power
  • A rattle from the manifold
  • Black smoke and rough running at low revs

Worth knowing before you buy

  • A well-known weak point on Mercedes diesels. The linkage wears at its ball joints and the actuator loses position.
  • The real risk is a flap breaking off and going into a cylinder. That is an engine, not a manifold.
  • The actuator and the linkage are often available separately from the manifold, which is much cheaper — worth asking before ordering the whole thing.
  • Carbon is what jams them, so cleaning is part of any proper repair.

What we need to quote it. The engine code and the fault codes. The chassis number settles the generation, the body and usually the engine in seventeen characters — it is on your mulkiya. A photograph of the old part helps where there is more than one version.

Cam cover and gasketCamshaft and bearingsRockers and liftersValves, springs and sealsCylinder headHead gasket and boltsManifold and swirl flaps
Cylinder head and valvetrain — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.

Rest of the cylinder head and valvetrain

All engine parts
Get in touch

Swirl flap actuator and linkage for your Mercedes-Benz?

Send the chassis number and a photograph of the old part. We come back with genuine, OEM and aftermarket options priced side by side, with lead times.

Mon–Sat, 8:00 AM – 6:00 PM · +971 54 303 3119 (Operations Director) · +971 54 241 0599 (Managing Director)