
Defender P400 i6 Exhaust Manifold Stud Replacement
There have been failures noted relative to exhaust manifold studs on i6 engines in LR Forums. Common symptoms are rattling at start up and broken studs caught in skid plates below engine compartment. Since I intend to keep my Defender for the foreseeable future elected to proactively replace them. Happy I did as 4 were loose and thus likely to fail (2022 110 w/ 31k miles). If they break, as others have had happen, it is a very challenging process to remove the sheared off studs from the block. Replacements installed are made of titanium and sold by Saltek Motorsports. Filed a NHTSA report in the hopes issue will be more closely reviewed by JLR to better determine scope/potential recall.