The Supertech exhaust valve is specified for BMW N54 turbo engines as a sodium-filled Inconel exhaust valve supplied singly and offered in a +0.5mm oversize to suit oversize valve requirements. This single Inconel, sodium-filled valve matches the oversize dimension listed for N54 applications; verify guide and seat work needed for the +0.5mm size when reconditioning heads.
Supertech BMW N54 Turbo Sodium Filled Inconel Exhaust Valve - +0.5mm Oversize - Single