A connection gasket is a key component used in the assembly of an engine. It is typically made of a durable material such as rubber or silicone and is designed to provide a leak-tight seal between two connected surfaces. Connection gaskets are commonly used in various locations throughout an engine, including between the cylinder head and engine block, as well as between various exhaust and intake components. Proper installation of connection gaskets is critical to ensuring optimal performance and preventing leaks that could lead to costly repairs down the road.