Johnson Matthey Catalytic Converter, 4 1/16in, Triple

Triple-action catalytic converter made by Johnson Matthey, with a 4.06" diameter stainless steel shell, designed for diesel engine emission control applications.
Three-way catalysts treat hydrocarbon, carbon monoxide, and nitrogen oxide emissions. Converts toxic gases into less harmful byproducts like carbon dioxide, water, nitrogen. Contains a honeycomb ceramic substrate coated with precious metal catalysts like platinum, palladium, and rhodium. 4.06” diameter suitable for medium duty diesel trucks and larger vehicles. Durable stainless steel outer housing resists corrosion and thermal damage.