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Lion Yard Trading
Mercedes-Benz · Brakes

Vacuum pump

A small pump driven off the engine that makes the vacuum the brake servo needs, on engines that do not produce enough on their own.

How you know it is this

  • A hard brake pedal that is worse when the engine is cold
  • An oil leak from the end of the cylinder head
  • A rattle or whine from the pump at idle

Worth knowing before you buy

  • Standard on diesels and on most modern turbocharged petrol engines.
  • Driven off the camshaft, so a failed one can leak engine oil into the brake vacuum line and ruin the servo too.
  • Usually replaced complete rather than repaired.

What we need to quote it. 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.

Servo / vacuum boosterVacuum pumpFluid reservoirMaster cylinderHard brake pipeFlexible hose
Master cylinder, servo and lines — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.

Rest of the calipers and hydraulics

All brakes parts
Get in touch

Vacuum pump 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)