e350 Cam Plug Replacement
1. Buy the parts from your local MB dealer. It will be a pack of 3 cam plugs - 1 large and 2 small ... for around $20.00 total
2. Remove the plastic engine covers (front panel cover and airbox) The cam plugs are easily visible and accessible, no need for a mirror, no need to crawl underneath. They are located on the top rear of the engine, facing the firewall... seriously, you can't miss 'em.
3. Driver's side has 2 plugs - 1 large and 1 small. Passenger side has 1 small plug.
4. Pry them out with a flat head screw-driver, wipe off/clean the engine surface, and pop in the new cam plugs. I did use my fingertip to lube the new cam plugs with just a little fresh oil before installing. No sealant. I tapped them in snug with the handle of the same screwdriver I used to pry them out after seating them by hand.
5. Total time - 12 minutes. Not sure why the local MB dealer quoted $326.00 for this job.
6. Easy stuff. Good luck.
1. Buy the parts from your local MB dealer. It will be a pack of 3 cam plugs - 1 large and 2 small ... for around $20.00 total
2. Remove the plastic engine covers (front panel cover and airbox) The cam plugs are easily visible and accessible, no need for a mirror, no need to crawl underneath. They are located on the top rear of the engine, facing the firewall... seriously, you can't miss 'em.
3. Driver's side has 2 plugs - 1 large and 1 small. Passenger side has 1 small plug.
4. Pry them out with a flat head screw-driver, wipe off/clean the engine surface, and pop in the new cam plugs. I did use my fingertip to lube the new cam plugs with just a little fresh oil before installing. No sealant. I tapped them in snug with the handle of the same screwdriver I used to pry them out after seating them by hand.
5. Total time - 12 minutes. Not sure why the local MB dealer quoted $326.00 for this job.
6. Easy stuff. Good luck.

You can get to it on our site by clicking HERE, or by clicking on the photo of the expansion plug set below.

*Price subject to change.



