Selective asymmetric swirl intake port
Self locking valve guide
Self locking valve seat insert
Shielded valve
Shrouded valve for internal combustion engine
Sliding stem seal, particularly for valve stems
Spring damper with controlled wear area
Structure of an exhaust port in an internal combustion engine
Supercharged internal combustion engines
Swing valve for internal combustion engines
System for controlling the intake air of an automotive engine