The Supertech exhaust valve for Subaru H6 applications is a single oversize dish valve specified at 32mm (+1.5mm) x 5.45 x 103.25mm and described as Inconel construction. Sold individually, this valve accommodates an increased head diameter for H6 exhaust valvetrain service where the larger 32mm dimension is required.
Supertech Subaru H6 32mm (+1.5mm)x5.45x103.25mm Inconel Dish Exhaust Valve - Single (Drop Ship Only)