ORIGINAL, German-made ATE rebuilt power brake booster (measuring approximately 10.5 inches in diameter) which will fit w123 chassis 300D 300CD 300TD sedans wagons and coupes made from 1976-1985.  Will also fit all 230 and 240D but for purists, some early 240D models came with a smaller (9" diameter) brake booster, which I also have available (if needed).  Either the smaller diameter booster or this more common larger diameter booster will be a direct bolt-on fit to a 230 or 240D.

Warranty:  1 year exchange-only warranty in the unlikely event there are any issues.  Warranty is only valid if the buyer installs a brand new master cylinder at the same time of brake booster replacement.   In the event of any warranty claim, the buyer MUST provide a dated receipt from a licensed mechanic and/or auto parts store) clearly showing purchase of the master cylinder, for warranty to be valid.   The reason for this condition is that many of these cars are running on very old master cylinders and these can leak and is the cause of damage to the booster and can leak into the booster, causing damage to it, so if you only replace just the booster, frequently the problem can re-occur if you don't get to the root of what caused the booster to fail in the first place.   You will also need to make sure your vacuum line to/from the booster is working properly and has a good check valve and if you have a diesel, the vacuum pump must output the proper vacuum levels to supply the booster. I run a vintage Mercedes repair shop and see these problems first hand.  Thank you.