Skip to content
Lion Yard Trading
Mercedes-Benz · Engine

Crankshaft front and rear oil seals

The seals at each end of the crankshaft where it leaves the block.

How you know it is this

  • Oil leaking from the front of the engine behind the pulley
  • Oil dripping from the bellhousing at the back — the rear main seal
  • A clutch or torque converter contaminated with oil

Worth knowing before you buy

  • The rear seal means the gearbox out. It is a cheap part and an expensive job, so do it whenever the gearbox is off for any other reason.
  • The front seal is behind the crank pulley and is usually done with the timing cover or the belt.
  • A leaking seal is often a symptom of crankcase pressure from a blocked breather. Check that, or the new seal pushes out too.

What we need to quote it. The engine code, and front or rear. 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.

Piston, rings and pinConnecting rod and shellsCrankshaft and mainsEngine blockCrank pulley / damperFlywheel and ring gearSeals and gasketsSump and gasket
Block and rotating assembly — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.

Rest of the block and rotating assembly

All engine parts
Get in touch

Crankshaft front and rear oil seals 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)