Rebuild kit for a 5 or 6 cylinder cast iron non adjustable fuel distributor with a 3 hole housing and a old type pressure regulator. All the o rings on the picture are included. Click on picture to see where they belong. Don't forget to download the rebuild instructions. Because the cast iron fuel distributors are hard to rebuild we only recommend experience mechanics to do this rebuild. If you are not experienced please use our rebuild service to get the best result. This kit fits the following known bosch fuel distributors 0 438 100 006