I’m going to be removing the exhaust manifold as I’m going to be removing the cylinder head. When putting the exhaust manifold back on how exactly do I put the silicone. Currently there is a metal gasket and a sort of silicone sealer. Does the silicone go between the manifold and the gasket or head and gasket or both?

W124 230E 1992 pre facelift

  • 1
    Welcome to Motor Vehicle Maintenance & Repair! What is year/make/model/engine of the vehicle in question? We could help you much more knowing this information. Commented May 20, 2020 at 10:53
  • I have never seen any silicone-like product applied to an exhaust manifold. I doubt that you need anything other than a new gasket.
    – jwh20
    Commented May 20, 2020 at 17:30
  • It’s a W124 230E 1992 Pᴀᴜʟsᴛᴇʀ2♦
    – Junaid
    Commented May 20, 2020 at 19:15
  • I've never seen sealant used at the exhaust manifold, either. If there's sealant there, I'd bet it was someone else's attempt to get some bad gaskets to seal. Multi Layer Steel (MLS) gaskets don't require sealant. The only sealant which might be able to be used is Permatex Copper, but I don't think it will handle the heat right at the exhaust port. Commented May 20, 2020 at 19:44
  • Pᴀᴜʟsᴛᴇʀ2♦ Maybe they just did it to make sure it sealed? The same shop was doing the exhaust on a BMW M1 (M1 not 1M) so I thought if someone took an M1 there then they probably know what they’re doing.
    – Junaid
    Commented May 21, 2020 at 20:24


You must log in to answer this question.

Browse other questions tagged .