For 1990 to 1991 350SD 350SDL (126 chassis), 1990 to 1993 300D 2.5 (124 chassis), and 1992 to 1995 300SD / S350 (140 chassis). You will need a pre-chamber removal tool like the one shown here in order to remove the prechamber from your cylinder head..
In addition you will need a special socket to remove the collar nut before you can extract the pre-chamber.

NOTE: If you remove the valve cover and gasket you can use heat from a blow torch to heat the head slightly to aid in removal and replacement of the pre-chamber (see Kents video on use of blow torch)
As of February 2012 we now carry this socket for sale. CLICK HERE to order.

WE ARE NO LONGER MAKING THIS TOOL IN OUR SHOP BUT... we will sell you the special fitting you will need to weld on to the end of a slide hammer to make your own. If you don't weld, pick up a 5 pound slide hammer and take it to a welding shop to have it done for you. Click on the BLUE TITLE below to order this special fitting.
This is a special pre-chamber fitting ONLY that will allow you to make your own prechamber removal tool for the 1990 to 1991 350SD 350SDL (126 chassis), 1990 to 1993 300D 2.5 (124 chassis), and 1992 to 1995 300SD / S350 (140 chassis). You will need to purchase a 5 lb slide hammer as shown here and then weld this fitting onto one of the threaded fittings that come with the slide hammer kit. Any auto machine shop can provide this service for you if you don't have your own welder.
WARNING: This is an intermediate to advanced D.I.Y job. No instructions or additional support is provided. Do not purchase this tool unless you are familiar with this procedure and the special precautions associated with it.
