Infiniti: Removal of a Seized Exhaust Sensor
If an exhaust sensor is seized in the exhaust manifold/catalyst/front tube, perform the service procedure to remove the sensor and prevent unnecessary replacement of the exhaust manifold/catalyst/front tube. In most cases, this procedure is successful because the threads of the exhaust sensors are made of a softer material than the part they thread into on

VIDEO: Service Intake Manifolds, Gaskets On European Vehicles
There many designs of elastomeric gaskets used by Mercedes Benz, BMW and VW/Audi. This video is sponsored by Elring.

Matco Tools 5-Piece Exhaust Manifold Stud Remover Set
Make broken stud removal easier and save time.
